WO2023016201A1 - 驱动装置和电子设备 - Google Patents

驱动装置和电子设备 Download PDF

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Publication number
WO2023016201A1
WO2023016201A1 PCT/CN2022/106486 CN2022106486W WO2023016201A1 WO 2023016201 A1 WO2023016201 A1 WO 2023016201A1 CN 2022106486 W CN2022106486 W CN 2022106486W WO 2023016201 A1 WO2023016201 A1 WO 2023016201A1
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WIPO (PCT)
Prior art keywords
driving
edge
module
edge control
drive
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2022/106486
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English (en)
French (fr)
Inventor
史林然
涂大锐
周建平
周围
王文兵
李润超
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ZTE Corp
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ZTE Corp
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Priority to JP2024506992A priority Critical patent/JP7725706B2/ja
Priority to EP22855184.2A priority patent/EP4387067A4/en
Publication of WO2023016201A1 publication Critical patent/WO2023016201A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/08—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
    • H02M1/088—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters for the simultaneous control of series or parallel connected semiconductor devices
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00—Conversion of DC power input into DC power output
    • H02M3/22—Conversion of DC power input into DC power output with intermediate conversion into AC
    • H02M3/24—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters
    • H02M3/28—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC
    • H02M3/325—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal
    • H02M3/335—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/10—Modifications for increasing the maximum permissible switched voltage
    • H03K17/102—Modifications for increasing the maximum permissible switched voltage in field-effect transistor switches
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
    • H03K17/56—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices
    • H03K17/687—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices the devices being field-effect transistors
    • H03K17/689—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices the devices being field-effect transistors with galvanic isolation between the control circuit and the output circuit
    • H03K17/691—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices the devices being field-effect transistors with galvanic isolation between the control circuit and the output circuit using transformer coupling

Definitions

  • the present application relates to the field of electronic technology, in particular to a driving device and electronic equipment.
  • the driving device to drive the power electronic device, the driving device usually outputs a high-level driving signal to the power electronic device to turn on the power electronic device.
  • the conduction time of a power electronic device is consistent with the duration of a high-level signal.
  • the power electronic device starts to conduct when it receives a high-level rising edge signal, and when it receives a high-level falling edge signal start shutting down.
  • This kind of driving method requires more energy to maintain continuous conduction of power electronic devices, which will cause greater driving loss, and the driving device generally uses a larger transformer for driving, resulting in a larger overall volume of the driving device.
  • Embodiments of the present application provide a driving device and electronic equipment.
  • the embodiment of the present application provides a driving device, including: an edge control generating module configured to output a first edge control signal and a second edge control signal at intervals; a first driving module configured to output from the The edge control generation module receives the first edge control signal, and outputs at least one first edge drive signal according to the first edge control signal; the second drive module is configured to receive the first edge control signal from the edge control generation module Two edge control signals, and output at least one second edge drive signal according to the second edge control signal; at least one switch module, the switch modules are respectively configured to receive the first edge drive from the first drive module signal and receive the second edge drive signal from the second drive module, and turn on or turn off the power electronic device according to the first edge drive signal and the second edge drive signal.
  • an embodiment of the present application provides an electronic device, including the drive device as described in the first aspect.
  • Figure 1 is a schematic diagram of the waveform relationship between the conduction signal and the driving signal of the power electronic device in some cases
  • Fig. 2 is a schematic structural diagram of a driving device provided by an embodiment of the present application.
  • Fig. 3 is a schematic diagram of a waveform relationship between the conduction signal of the power electronic device and the first edge control signal and the second edge control signal of the embodiment of the present application;
  • FIG. 4 is a schematic diagram of a circuit structure of a driving device provided in an embodiment of the present application.
  • FIG. 5 is a schematic diagram of a circuit structure of another driving device provided in an embodiment of the present application.
  • Fig. 6 is a schematic diagram of a waveform relationship between the conduction signal of the power electronic device and the first edge control signal and the second edge control signal of the embodiment of the present application;
  • FIG. 7 is a schematic diagram of a circuit structure of another driving device provided in an embodiment of the present application.
  • FIG. 8 is a schematic diagram of a circuit structure of another driving device provided in an embodiment of the present application.
  • FIG. 9 is a schematic diagram of a circuit structure of another driving device provided in an embodiment of the present application.
  • Fig. 10 is a schematic diagram of a waveform relationship between the conduction signal of the power electronic device and the first edge control signal and the second edge control signal of the embodiment of the present application;
  • Fig. 11 is a schematic diagram of the circuit structure of another driving device provided by the embodiment of the present application.
  • FIG. 12 is a schematic diagram of a waveform relationship between a turn-on signal and a first edge control signal and a second edge control signal of a power electronic device according to an embodiment of the present application.
  • At least one of the following and similar expressions refer to any group of these items, including any group of single or plural items.
  • at least one of a, b, and c can represent: a, b, c, a and b, a and c, b and c, or, a and b and c, where a, b, c can be a single , or more than one.
  • connections described in the embodiments of the present application include direct connections and indirect connections through intermediate components.
  • the driving transformer usually provides a high-level signal for the power electronic devices to turn on the power electronic devices.
  • the turn-on time T on of the power electronic device is consistent with the duration T drive of the high-level signal. start shutting down.
  • This driving method requires more energy to maintain the continuous conduction of the power electronic device, and will cause a larger driving loss.
  • the volume of the driving transformer for realizing this driving mode is usually large, and it is usually necessary to install a DC blocking capacitor on the primary winding of the driving transformer to prevent the driving transformer from being saturated.
  • the driving level will change with the duty cycle, resulting in this common power electronic device drive The method is not suitable for occasions where the duty cycle needs to be adjusted substantially.
  • the embodiments of the present application provide a driving device and an electronic device, which do not need to output a continuous high-level signal to maintain continuous conduction of the power electronic device, so as to reduce the driving loss and the volume of the driving device.
  • FIG. 2 is a schematic structural diagram of a driving device provided in an embodiment of the present application.
  • the driving device of the embodiment of the present application includes: an edge control generation module 10 , a first driving module 20 , a second driving module 30 and a switch module 40 .
  • the input terminals of the first driving module 20 and the second driving module 30 are respectively connected to the edge control generation module 10
  • the output terminals of the first driving module 20 and the second driving module 30 are respectively connected to the switch module 40 .
  • the edge control generation module 10 in the embodiment of the present application is configured to output the first edge control signal and the second edge control signal at intervals.
  • the edge control generation module 10 can alternately output the first edge control signal and the second edge control signal through two output terminals, that is, the first output terminal outputs the first edge control signal, and the second output terminal outputs the second edge control signal.
  • the two output terminals do not output edge control signals at the same time, and the output time interval of the first edge control signal and the second edge control signal can be preset.
  • the high level duration of the first edge control signal and the second edge control signal can be set to nanosecond level, specifically, can be set within 100 ns. Of course, it may also be greater than 100 ns, which is not limited in this embodiment of the present application.
  • the edge control generating module 10 in the embodiment of the present application may be specifically implemented by using an ARM, DSP or other digital control chips.
  • the first driving module 20 of the embodiment of the present application is configured to receive the first edge control signal from the edge control generation module 10, and output at least one first edge driving signal according to the first edge control signal;
  • the second driving The module 30 is configured to receive the second edge control signal from the edge control generating module 10, and output at least one second edge driving signal according to the second edge control signal. In this way, the first driving module 20 and the second driving module 30 alternately output edge driving signals to the switch module 40 .
  • Each switch module 40 is configured to receive the first edge drive signal from the first drive module 20 and the second edge drive signal from the second drive module 30, and turn on or off according to the first edge drive signal and the second edge drive signal. Power electronic device 50 is disconnected.
  • the switch module 40 when the switch module 40 receives the first edge drive signal from the first drive module 20, the power electronic device 50 is continuously turned on; when the switch module 40 receives the second edge drive signal from the second drive module 30 After the edge drives the signal, the power electronic device 50 is turned off. In this way, the turn-on and turn-off of the power electronic device 50 are controlled by two continuous edge drive signals.
  • FIG. 3 is a schematic diagram of a waveform relationship between the conduction signal of the power electronic device 50 and the first edge control signal and the second edge control signal according to the embodiment of the present application.
  • T on represents the turn-on time of the power electronic device
  • T off represents the cut-off time of the power electronic device.
  • the turn-on time T on of the power electronic device 50 is determined by the time interval between receiving the first edge driving signal and the second edge driving signal.
  • the edge control generation module 10 outputs the first edge control signal and the second edge control signal at intervals, and uses the first edge control signal to control the first driving module 20 to output the first edge driving signal to the switch module 40.
  • the second edge control signal controls the second drive module 30 to output the second edge drive signal to the switch module 40, so that the switch module 40 orders the power electronic device 50 to be turned on and off under the control of the first edge drive signal and the second edge drive signal,
  • the conduction duration of the power electronic device 50 is the time interval between the rising edge of the first edge driving signal and the rising edge of the second edge driving signal, so as to realize turning on or off according to the first edge driving signal and the second edge driving signal Power Electronics 50 .
  • FIG. 4 is a schematic diagram of a circuit structure of a driving device provided in an embodiment of the present application.
  • the first driving module 20 may include a first driving transformer T1, and the first driving transformer T1 includes a first primary winding T10 and a first secondary winding T11, wherein the first primary winding T10 is connected to the edge
  • the control generation module 10 the first primary winding T10 is used to receive the first edge control signal from the edge control generation module 10; the first secondary winding T11 is connected to the switch module 40, and the first secondary winding T11 is used to receive the first edge control signal from the first primary
  • the side winding T10 outputs a first edge drive signal to the corresponding switch module 40 according to the first edge control signal.
  • the drive device in the embodiment of the present application also includes a power supply circuit 60, which may have multiple voltage output terminals, which are respectively connected to the same-named terminal of the first primary winding T10 and the edge control generation module 10, as the first primary winding T10.
  • a driving transformer T1 and an edge control generating module 10 provide working voltage.
  • a third switching transistor S1 and a third diode D1 are included between the edge control generation module 10 and the first driving transformer T1, and the gate of the third switching transistor S1 is connected to the first An output terminal, the anode of the third diode D1 is connected to the drain of the third switching tube S1, and the cathode of the third diode D1 is connected to the same terminal of the first primary winding T10.
  • the edge control generation module 10 when the edge control generation module 10 outputs the first edge control signal to the third switch S1, the third switch S1 is turned on, and the third switch S1 applies the voltage between the power supply circuit 60 and the reference ground.
  • the first secondary winding T11 senses the edge voltage corresponding to the first edge control signal from the first primary winding T10, and then outputs the first edge drive signal to the corresponding switch module 40 .
  • the second driving module 30 includes a second driving transformer T2, and the second driving transformer T2 includes a second primary winding T20 and a second secondary winding T21, wherein the second primary winding T20 is connected to the edge control Generating module 10, the second primary winding T20 is used to receive the second edge control signal from the edge control generating module 10; the second secondary winding T21 is connected to the switch module 40, and the second secondary winding T21 is used to receive the second edge control signal from the second primary After sensing the second edge control signal, the winding T20 outputs a second edge drive signal to the corresponding switch module 40 according to the second edge control signal.
  • the voltage output terminal of the power supply circuit 60 is also connected to the same terminal of the second primary winding T20, so as to provide the working voltage for the second driving transformer T2.
  • a fourth switch S2 and a fourth diode D2 are included between the edge control generation module 10 and the second drive transformer T2, and the gate of the fourth switch S2 is connected to the first Two output terminals, the anode of the fourth diode D2 is connected to the drain of the fourth switching tube S2, and the cathode of the fourth diode D2 is connected to the same terminal of the second primary winding T20.
  • the edge control generation module 10 outputs the second edge control signal to the fourth switch S2, the fourth switch S2 is turned on, and the fourth switch S2 applies the voltage between the power supply circuit 60 and the reference ground.
  • the second secondary winding T21 senses the edge voltage corresponding to the second edge control signal from the second primary winding T20, and outputs the second edge drive signal to the corresponding switch module 40 .
  • the third diode D1 may be a reset diode, which provides a discharge circuit for the first driving transformer T1 after the first edge control signal disappears and the third switching tube S1 is turned off.
  • the fourth diode D2 can also be a reset diode, which provides a discharge circuit for the second driving transformer T2 after the second edge control signal disappears and the fourth switching tube S2 is turned off.
  • the edge control generation module of the embodiment of the present application includes an edge control generation chip (for ARM, DSP or other digital control chips), and the edge control generation chip is used to output the first edge control signal and the second edge control signal at intervals. Signal.
  • an edge control generation chip for ARM, DSP or other digital control chips
  • the edge control generating module further includes a first driving capability enhancing circuit, the edge control generating chip outputs the first edge control signal to the first driving capability enhancing circuit, and the first driving capability enhancing circuit The edge control signal is enhanced, and the processed first edge control signal is output to the gate of the third switching transistor S1.
  • the edge control generation module further includes a second driving capability enhancing circuit, the edge control generating chip outputs a second edge control signal to the second driving capability enhancing circuit, and the second driving capability enhancing circuit The second edge control signal is enhanced, and the processed second edge control signal is output to the gate of the fourth switching transistor S2.
  • the power supply circuit 60 is connected to the edge control generating chip, the first driving ability enhancing circuit, and the first driving ability enhancing circuit respectively, so as to provide work for the edge control generating chip, the first driving ability enhancing circuit, and the first driving ability enhancing circuit. Voltage.
  • the first driving capability enhancing circuit and the second driving capability enhancing circuit are AND gate circuits or push-pull circuits respectively.
  • the first driving capability enhancing circuit and the second driving capability enhancing circuit may also be other devices, circuits or devices that can be used to enhance driving capability.
  • the first driving capability enhancing circuit and the second driving capability enhancing circuit may be of the same or different circuit types, for example, the first driving capability enhancing circuit is an AND circuit, and the second driving capability enhancing circuit is a push-pull circuit.
  • the embodiment of the present application does not place too many restrictions on the specific circuit structures of the first driving capability enhancing circuit and the second driving capability enhancing circuit.
  • the embodiment of the present application is to enhance the driving capability of the edge control signal output by the edge control generation chip (ARM, DSP or other digital control chips), to ensure that the third switching tube S1 and the fourth switching tube S2 can be reliably turn on, between the edge control generation chip and the third switch S1, and between the edge control generation chip and the fourth switch S2, respectively set up a first-stage driving capability enhancing circuit to enhance the driving capability.
  • the edge control generation chip ARM, DSP or other digital control chips
  • the first edge control signal output by the edge control generation chip is enhanced by the first driving capability enhancement circuit, and then output to the third switch tube S1 to reliably turn on the third switch tube S1;
  • the second edge control signal output by the edge control generation chip After the control signal is enhanced by the second driving capability enhancement circuit, it is output to the fourth switching tube S2, so as to reliably turn on the fourth switching tube S2.
  • the switch module 40 of the embodiment of the present application includes an opening loop 41 and an closing loop 42 .
  • the open loop 41 includes a first diode D3 and a first drive input terminal VI1, the anode of the first diode D3 is connected to the first drive input terminal VI1, and the cathode of the first diode D3 is connected to the power electronic device M1.
  • the turn-off loop 42 includes a first switch tube S3, a second switch tube S4 and a second drive input terminal VI2, the gate of the first switch tube S3 is connected to the second drive input terminal VI2, and the drain of the first switch tube S3 is connected to The gate of the second switching transistor S4 is connected to the drain of the second switching transistor S4 to the power electronic device M1.
  • the first drive input terminal VI1 is used to receive the first edge drive signal from the first drive module 20
  • the second drive input terminal VI2 is used to receive the second edge drive signal from the second drive module 30. edge drive signal.
  • the first driving input terminal VI1 is used to receive the second edge driving signal from the second driving module 30, and the second driving input terminal VI2 is used to receive the second edge driving signal from the first driving module 20.
  • the first edge driving signal is received.
  • the power electronic device 50 includes a power electronic device M1, and the power electronic device M1 may specifically be a MOSFET switch tube.
  • the power electronic device M1 may specifically be a MOSFET switch tube.
  • other voltage-driven power electronic devices are also applicable to the basic circuit topology of the driving device provided in the embodiment of the present application. In the following, the embodiments of the present application will be described by taking the power electronic device as a MOSFET switch tube as an example.
  • the gate of the power electronic device M1 is connected to the cathode of the first diode D3, and the source of the power electronic device M1 is connected to the source of the first switching tube S3 and the drain of the second switching tube S4 .
  • first driving input terminal VI1 and the second driving input terminal VI2 are used for one-to-one connection with the first driving module 20 and the second driving module 30 . That is, the first driving input terminal VI1 is connected to the first driving module 20 , and the second driving input terminal VI2 is connected to the second driving module 30 .
  • the first driving input terminal VI1 of the opening loop 41 is connected to the end of the same name of the first secondary winding T11 to receive the first edge driving signal from the first secondary winding T11; the closing loop 42
  • the second driving input terminal VI2 of the second secondary winding T21 is connected to the same terminal of the second secondary winding T21 to receive the second edge driving signal from the second secondary winding T21.
  • the first switching transistor S3 is an NMOS transistor
  • the second switching transistor S4 is a PMOS transistor
  • the first switching tube S3 and the second switching tube S4 may also be triodes or other devices with similar functions, which are not limited in this embodiment of the present application.
  • the working principle of the switch module 40 will be described below with reference to FIG. 4 .
  • the opening process of the switch module 40 is as follows: after the first drive input terminal VI1 of the open circuit 41 receives the first edge drive signal output by the first secondary winding T11, the first edge drive signal is transmitted to the The gate of the power electronic device M1 turns on the power electronic device M1 to realize the opening of the power electronic device.
  • the unidirectional conductivity of the first diode D3 makes the gate capacitance of the power electronic device M1 continue to maintain the high-level voltage that makes the power electronic device M1 turn on after the first edge drive signal disappears, and no power electronics will appear.
  • the gate capacitance of the device M1 is reversely discharged, thus allowing the duration of the first edge control signal applied to the first primary winding T10 of the first drive transformer T1 to be greatly shortened.
  • the duration of the first edge control signal may be 20ns-100ns, and of course it may also be greater than 100ns.
  • the turn-off process of the switch module 40 is as follows: after the second drive input terminal VI2 of the turn-off circuit 42 receives the second edge drive signal output by the second secondary winding T21, the second edge drive signal is transmitted to the first switch tube S3. Gate, make the first switch tube S3 conduct and transmit the second edge drive signal to the second switch tube S4, and then turn on the second switch tube S4, after the second switch tube S4 is turned on, provide power electronic device M1 A discharge circuit is established, so that the power electronic device M1 is cut off, and the power electronic device is turned off.
  • FIG. 3 for the waveform relationship between the conduction signal of the power electronic device M1 in the driving device shown in FIG. 4 and the first edge control signal and the second edge control signal.
  • the open loop 41 may further include a first resistor R2 connected between the cathode of the first diode D3 and the power electronic device M1 .
  • the first resistor R2 is used to limit the charging current of the gate of the power electronic device M1, which acts as a turn-on current limiter to reduce EMI.
  • the turn-off loop 42 may further include a second resistor R3 connected between the source of the second switching transistor S4 and the power electronic device M1 .
  • the second resistor R3 is used to limit the turn-off speed of the power electronic device M1, and plays a role of turn-off current limiting, so as to reduce EMI.
  • the turn-off loop 42 may further include a second diode D4 and an RC loop, the RC loop is connected between the drain and the source of the first switching transistor S3, and the second two
  • the anode of the diode D4 is connected to the first driving input terminal VI1, and the cathode of the second diode D4 is connected to the RC loop.
  • the RC loop includes a third resistor R1 and a first capacitor C1, and the third resistor R1 is connected in parallel with the first capacitor C1.
  • the shutdown loop 42 of the embodiment of the present application also provides a fault protection mechanism to realize automatic shutdown of the power electronic device.
  • the fail-safe mechanism works as follows.
  • the presence of the first resistor R2 makes the gate level of the PMOS-type second switch tube S4 greater than its source level, and the second switch tube S4 is always on during the conduction process of the power electronic device M1.
  • the first capacitor C1 is charged to the voltage across the first secondary winding T11 through the second diode D4, and then due to the second diode D4
  • the first switch tube S3 is turned off, and the first capacitor C1 will be discharged through the third resistor R1.
  • the second switch tube S4 Due to the large resistance value of R1 selected, the time constant of the RC charge and discharge combination composed of R1 and C1 is large, so before the normal second edge control signal comes, the second switch tube S4 is always in the cut-off state, that is, the power electronic device M1 The gate-to-source voltage remains at a high level and is continuously turned on.
  • the first switch tube S3 is turned on, providing a small resistance discharge circuit for the first capacitor C1, so that the gate level of the second switch tube S4 is lower than the source level, and the second The second switch tube S4 starts to conduct, and clamps the voltage across the gate and source of the power electronic device M1 at a voltage value lower than the gate opening voltage.
  • the gate-source voltage of the power electronic device M1 passes through the second resistor R3 and the second resistor R3.
  • the second switching tube S4 performs rapid discharge to realize normal and rapid shutdown of the power electronic device M1. If there is no second edge control signal and the subsequent first edge control signal does not appear, the voltage across the first capacitor C1 will be slowly discharged through the third resistor R1 until the gate level of the second switching transistor S4 is less than The source level and the second switching tube S4 are turned on, and the gate-source voltage of the power electronic device M1 begins to drop, realizing self-shutoff.
  • combination time constant of R1C1 selected in the embodiment of the present application can be set within 3 times of the typical switching period of the power electronic device M1, and can also be adjusted accordingly according to the actual application scenario.
  • the second drive transformer T2 does not need to provide energy to charge the gate capacitance of the power electronic device M1 like the first drive transformer T1
  • the second drive transformer T2 can be replaced by other isolated signal transmission devices , such as an optocoupler.
  • the duration of the second edge control signal may be lower than the duration of the first edge control signal.
  • the duration of the first edge control signal is 100 ns
  • the duration of the second edge control signal The duration of the control signal is 20-50ns.
  • the duration of the second edge control signal can also be the same as the duration of the first edge.
  • third switch tube S1 and the fourth switch tube S2 described in the embodiment of the present application may be any full-control switch tubes.
  • FIG. 5 is a schematic diagram of a circuit structure of another driving device provided in an embodiment of the present application.
  • the embodiment of the present application provides an edge isolation driving scheme. Under this scheme, the energy required to drive the transformer to maintain the continuous conduction of the power electronic device is small, and the driving loss is small. Correspondingly, the volume of the driving transformer is small and the number of winding turns is small, thereby reducing The influence of parasitic parameters such as leakage inductance is eliminated, and the drive consistency of the output of the multiple windings on the secondary side is good, which can well ensure the consistency of the switching speed of the multi-channel series drive, and solve the above problems.
  • the driving device shown in FIG. 5 provides a scheme for driving N (N ⁇ 2) power electronic devices in series.
  • the first driving module 20 includes a first driving transformer T1
  • the first driving transformer T1 includes a first primary winding T10 and N first secondary windings (T11, T12, ..., T1N)
  • the second driving module 30 includes a second driving transformer T2, and the second driving transformer T2 includes a second primary winding T20 and N second secondary windings (T21, T22, . . . , T2N).
  • first driving transformer T1 and the second driving transformer T2 in Fig. 5 are multi-winding transformers as an example, and N single-winding transformers replace one multi-winding transformer (N identical secondary windings) in series driving
  • the method also belongs to the scope of protection of this application.
  • the number of switch modules 40 is N, and each switch module 40 includes a turn-on loop 41 and a turn-off loop 42, and the N turn-on loops 41 correspond to the N first secondary windings one by one.
  • the N shut-off loops 42 are connected to the N second secondary windings in one-to-one correspondence.
  • the N power electronic devices Mi are connected to the N switch modules 40 in one-to-one correspondence.
  • each switch module 40 is consistent with the circuit topology structure of the switch module 40 shown in FIG. 4 , so details are not repeated here.
  • the edge control generation module 10 outputs a first edge control signal to the gate of the third switching transistor S1, so that the third switching transistor S1 is turned on, and the power supply circuit is connected to the reference ground.
  • the edge control generating module 10 outputs a second edge control signal to the gate of the fourth switching transistor S2, so that the fourth switching transistor S2 is turned on, and the voltage between the power supply circuit and the reference ground is applied to the second driving transformer T2.
  • the N secondary windings (T21, T22, ..., T2N) of the second driving transformer T2 respectively induce a signal corresponding to the second edge control signal from the second primary winding T20.
  • T on represents the turn-on time of the power electronic device
  • T off represents the cut-off time of the power electronic device.
  • the turn-on time T on of each power electronic device Mi is determined by the time interval between receiving the first edge driving signal and the second edge driving signal.
  • devices with the same function in the circuit topology of the driving device are integrated into one packaging component to obtain better consistency in series driving.
  • the first diode D3 in the N turn-on loops 41 is integrated in one package
  • the second diode D4 in the N turn-off loops 42 is integrated in one package
  • the N turn-off loops 42 are integrated in one package
  • the first switching transistor S3 in the circuit 42 is integrated in one package
  • the PMOS-type second switching transistor S4 in the N shut-off circuits 42 is integrated in one package.
  • FIG. 7 shows a circuit structure of a driving device configured to drive two power electronic devices in series.
  • the first diodes ( D31 , D32 ) of the two open loops 41 are integrated in one packaging part H .
  • the integrated device solution based on the serial drive method of the edge drive isolation basic circuit topology described in Embodiment 1 in this application includes but is not limited to N (N ⁇ 2) diodes D3 in open loops integrated in one package, N( Diode D4 in N ⁇ 2) turn-off loops is integrated in one package, switch tube S3 in N (N ⁇ 2) turn-off loops is integrated in one package, and N (N ⁇ 2) turn-off
  • N (N ⁇ 2) diodes D3 in open loops integrated in one package includes but is not limited to N (N ⁇ 2) diodes D3 in open loops integrated in one package, N( Diode D4 in N ⁇ 2) turn-off loops is integrated in one package, switch tube S3 in N (N ⁇ 2) turn-off loops is integrated in one package, and N (N ⁇ 2) turn-off
  • N (N ⁇ 2) turn-off The integration of the PMOS type field switch S4 in the circuit into one package or the combination of arbitrarily selecting several integrated packages of devices all belong to the protection scope of this application.
  • Embodiment 2 of the present application is based on the serial drive method of the edge-driven isolation basic circuit topology described in Embodiment 1.
  • the integrated device solution is not limited to a specific integrated device package, any package that can realize the integration of N devices with the same function It also belongs to the protection category of the present application.
  • Embodiment 1 in this application are applicable to Embodiment 2, and all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of this application.
  • FIG. 8 is a driving device for realizing serial driving of power electronic devices using a discrete device solution, which is different from the example shown in FIG. 7.
  • the two open loops 41 have the same function All devices are packaged independently, similarly, devices with the same function between the two shutdown circuits 42 are also packaged independently.
  • FIG. 5 , FIG. 7 and FIG. 8 are only part of the embodiments of the present application, not all of the second embodiment.
  • the series drive method in which N single-winding transformers replace one multi-winding transformer (N identical secondary windings) also falls within the scope of protection of this application; the distribution of windings in Figure 5, Figure 7 and Figure 8 and the connection with the drive circuit
  • the order is not unique, and any connection mode that can realize series driving of N (N ⁇ 2) power electronic devices falls within the scope of protection of this application, and so on.
  • the series driving method based on the edge isolation driving topology described in Embodiment 1 in Embodiment 2 has a discrete device solution in addition to the integrated device solution.
  • the content and protection scope of Embodiment 1 in this application are applicable to Embodiment 2, and all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of this application.
  • the turn-on and turn-off of the power electronic device M1 are respectively controlled by two drive modules.
  • This characteristic of its structure and function makes it also suitable for complementary drive Occasions, such as half bridge, full bridge and other applications.
  • the present application proposes a complementary driving scheme on the basis of the basic circuit topology described in Embodiment 1.
  • FIG. 9 is a schematic diagram of a circuit structure of another driving device provided in an embodiment of the present application.
  • the switch module 40 includes a first switch module 40a and a second switch module 40b, both of which include the above-mentioned on-circuit and off-circuit.
  • the first drive input terminal VI11 of the first switch module 40a is connected to the first drive module 20
  • the second drive input terminal VI21 of the first switch module 40a is connected to the second drive module 30
  • the first drive input terminal VI21 of the second switch module 40b The driving input terminal VI12 is connected to the second driving module 30
  • the second driving input terminal VI22 of the second switch module 40 b is connected to the first driving module 20 .
  • the first switch module 40a is connected with a power electronic device M1
  • the second switch module 40b is connected with a power electronic device M2.
  • circuit topology of the on-circuit and off-circuit of the first switch module 40a and the second switch module 40b in Fig. 9 is consistent with the circuit topology of the on-circuit and off-circuit in the example shown in Fig. repeat.
  • the first driving module 20 includes a first driving transformer T1, and the first driving transformer T1 includes a first primary winding T10 and at least two first secondary windings (T11, T12, ...); the second driving module 30 includes a second driving transformer T2, and the second driving transformer T2 includes a second primary winding T20 and at least two second secondary windings (T21, T22, . . . ).
  • the first switch module 40a for the first switch module 40a, the first drive input terminal VI11 of its turn-on circuit is connected to the first secondary winding T11, and the second drive input terminal VI21 of its turn-off circuit is connected to The second secondary winding T21 is connected; for the second switch module 40b, the first driving input terminal VI12 of its opening circuit is connected with the second secondary winding T22, and the second driving input terminal VI22 of its closing circuit is connected with the first secondary winding T22. Winding T12 is connected.
  • the first switch module 40a is correspondingly connected with the power electronic device M1
  • the second switch module 40b is correspondingly connected with the power electronic device M2.
  • the driving device shown in FIG. 9 can realize the logic function of the exclusive OR gate of the digital circuit (also known as "exclusive OR" driving technology).
  • exclusive OR also known as "exclusive OR” driving technology.
  • the edge control generation module 10 When the edge control generation module 10 outputs the first edge control signal and the second edge control signal alternately at intervals, the conduction signals of the power electronic device M1 and the power electronic device M2 in the example shown in FIG. 9 and the first edge control signal,
  • the waveform relationship of the second edge control signal is shown in FIG. 10 .
  • T on represents the turn-on time of the power electronic device
  • T off represents the cut-off time of the power electronic device. It can be seen from Fig. 10 that the turn-on signals of the power electronic devices M1 and M2 have a complementary waveform relationship, that is, when M1 is turned on, M2 is turned off; when M1 is turned off, M2 is turned on.
  • the dead time (T dead ) between the conduction signals of M1 and M2 can be adjusted by the first resistor R2 and the second resistor R3 in FIG. 4 .
  • a resistor can also be connected in series between the same-named ends of the secondary windings of the driving transformers T1 and T2 and the anodes of the first diode D3 of the open loop 41 of each power electronic device to adjust the dead time.
  • the edge control generating module 10 outputs a first edge control signal to the gate of the third switching transistor S1, so that the third switching transistor S1 is turned on, and the voltage between the power supply circuit and the reference ground is applied to the first driving transformer T1.
  • Both ends of the first primary winding T10, the two first secondary windings T11 and T12 of T1 respectively induce the edge voltage corresponding to the first edge control signal from the first primary winding T10 and output the first edge drive signal respectively
  • the first edge drive signal output by T11 acts on the open loop 41 of the power electronic device M1 to turn on the power electronic device M1;
  • the first edge drive signal output by T12 acts on the turn-off loop 42 of the power electronic device M2, Turn off the power electronics M2.
  • the first edge control signal output by the edge control generating module 10 has a multiplexing function capable of simultaneously turning on M1 and turning off M2.
  • the edge control generating module 10 outputs a second edge control signal to the gate of the fourth switching transistor S2, so that the fourth switching transistor S2 is turned on, and the voltage between the power supply circuit and the reference ground is applied to the second driving transformer T2.
  • Both ends of the second primary winding T20, the two second secondary windings T21 and T22 of the second driving transformer T2 respectively induce the edge voltage corresponding to the second edge control signal from the second primary winding T20 and output the second edge voltage respectively.
  • the second edge drive signal output by T21 acts on the turn-off circuit 42 of the power electronic device M1 to turn off the power electronic device M1; the second edge drive signal output by T22 acts on the turn-on of the power electronic device M2 On the loop 41, the power electronic device M2 is turned on.
  • the second edge control signal output by the edge control generation module 10 has a multiplexing function capable of simultaneously turning on M2 and turning off M1.
  • the third diode D1 in FIG. 9 may be a reset diode, which provides a discharge circuit for the first driving transformer T1 after the first edge control signal disappears and the third switching transistor S1 is turned off.
  • the fourth diode D2 can also be a reset diode, which provides a discharge circuit for the second driving transformer T2 after the second edge control signal disappears and the fourth switching tube S2 is turned off. Based on the third diode D1 and the fourth diode D2, the circuit of the driving device will be reset, making M1 and M2 non-conductive.
  • Figure 9 is an example of a multi-winding transformer, and the complementary drive method in which two single-winding transformers replace one multi-winding transformer (two identical secondary windings) also belongs to the scope of protection of this application; the source of M1 in Figure 9 and The drains of M2 may or may not be connected together; the distribution of the windings in Figure 9 and the connection sequence with the drive circuit are not unique, and any connection method that can realize the complementary driving of two power electronic devices belongs to this application scope of protection, etc.
  • the content and protection scope of Embodiment 1 in this application are applicable to Embodiment 3, and all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of this application.
  • FIG. 11 is a schematic diagram of a circuit structure of another driving device provided by an embodiment of the present application.
  • the switch module 40 includes a first switch module 40a and a second switch module 40b, and the number of the first switch module 40a and the second switch module 40b is multiple.
  • the first drive input end of each first switch module 40a is respectively connected to the first drive module 20, and the second drive input end of each first switch module 40a is respectively connected to the second drive module 30; each second switch module
  • the first driving input ends of the switches 40b are respectively connected to the second driving module 30
  • the second driving input ends of each second switch module 40b are respectively connected to the first driving module 20 .
  • circuit topology of the opening circuit and the closing circuit of the first switch module 40a and the second switching module 40b in Fig. 11 is consistent with the opening circuit and the circuit topology of the closing circuit in the example shown in Fig. 4, and is not repeated here. repeat.
  • a first power electronic device combination and a second power electronic device combination are included, and the first power electronic device combination and the second power electronic device combination respectively include at least two power electronic devices connected in series .
  • the first power electronics combination includes power electronics M1 and M2
  • the second power electronics combination includes power electronics M3 and M4.
  • the power electronic devices M1 and M2 in the first power electronic device combination are correspondingly connected to a first switch module 40a
  • the power electronic devices M3 and M4 in the second power electronic device combination are correspondingly connected to a second switch module 40b.
  • the first driving module 20 includes a first driving transformer T1, and the first driving transformer T1 includes a first primary winding T10 and first secondary windings T11, T12, T13, T14;
  • the second driving module 30 includes a second driving transformer T2, and the second driving transformer T2 includes a second primary winding T20 and second secondary windings T21, T22, T23, T24.
  • the first drive input terminals VI11 and VI12 of the open loop 41 of the two first switch modules 40a are correspondingly connected to the first secondary windings T11 and T12; the second drive inputs of the close loop 42 of the two first switch modules 40a
  • the terminals VI21 and VI22 are correspondingly connected to the second secondary windings T21 and T22; the first drive input terminals VI13 and VI14 of the opening loop 41 of the two second switch modules 40b are correspondingly connected to the second secondary windings T23 and T24;
  • the second drive input terminals VI23 and VI24 of the shut-off loop 42 of the two second switch modules 40b are correspondingly connected to the first secondary windings T13 and T14.
  • the edge control generating module 10 outputs a first edge control signal to the gate of the third switching transistor S1, so that the third switching transistor S1 is turned on, and the voltage between the power supply circuit and the reference ground is applied to the first driving transformer T1.
  • Both ends of the first primary winding T10, the first secondary windings T11, T12, T13, and T14 of T1 respectively induce the edge voltage corresponding to the first edge control signal from the first primary winding T10 and output the first edge Drive signal, the first edge drive signal output by T11, T12 acts on the open loop 41 of the power electronic device M1, M2, so that the power electronic device M1, M2 is turned on; the first edge drive signal output by T13, T14 acts on the power electronic device M1, M2.
  • the first edge control signal output by the edge control generating module 10 has a multiplexing function of simultaneously turning on M1 and M2 and turning off M3 and M4.
  • the edge control generating module 10 outputs a second edge control signal to the gate of the fourth switching transistor S2, so that the fourth switching transistor S2 is turned on, and the voltage between the power supply circuit and the reference ground is applied to the second driving transformer T2.
  • Both ends of the second primary winding T20, the second secondary windings T21, T22, T23, and T24 of the second drive transformer T2 respectively induce edge voltages corresponding to the second edge control signal from the second primary winding T20 and respectively Output the second edge drive signal, the second edge drive signal output by T21, T22 acts on the shut-off circuit 42 of the power electronic device M1, M2, so that the power electronic device M1, M2 is turned off; the second edge drive signal output by T23, T24
  • the driving signal acts on the open circuit 41 of the power electronic devices M3 and M4 to turn on the power electronic devices M3 and M4.
  • the second edge control signal output by the edge control generation module 10 has a multiplexing function of simultaneously turning on M3 and M4 and turning off M1 and M2.
  • the relationship between the conduction signal and the first edge control signal and the second edge control signal of the power electronic devices M1 , M2 , M3 , M4 in the example shown in FIG. 11 is shown in FIG. 12 .
  • the dead time (Tdead) between driving the M1+M2 series driving combination and the M3+M4 series driving combination is adjusted by the first resistor R2 and the second resistor R3 in FIG. 4 .
  • a resistor can also be connected in series between the same-named ends of the secondary windings of the driving transformers T1 and T2 and the anodes of the first diode D3 of the open loop 41 of each power electronic device to adjust the dead time.
  • the third diode D1 in FIG. 11 may be a reset diode, which provides a discharge circuit for the first driving transformer T1 after the first edge control signal disappears and the third switching transistor S1 is turned off.
  • the fourth diode D2 can also be a reset diode, which provides a discharge circuit for the second drive transformer T2 after the second edge control signal disappears and the fourth switch tube S2 is turned off. Based on the third diode D1 and the fourth diode D2, the circuit of the driving device will be reset, making M1, M2, M3, M4 all non-conductive.
  • Example 4 integrates the serial driving function of Example 2 and the complementary driving function of Example 3.
  • the embodiment described in Fig. 11 is only a part of the embodiments of the present application, not all of the fourth embodiment.
  • the drive of four power electronic devices is taken as an example in Fig.
  • the functional integration method 2 described above includes but is not limited to the driving of 4 power electronic devices, and the driving of 2N (N ⁇ 2) power electronic devices is also applicable (every N devices are in a series driving relationship, and the combination of N series driving devices and
  • the first/second edge driving transformers T1 and T2 described in Embodiment 4 of the present application each have 2N secondary windings, and the N secondary windings are respectively connected to the N secondary windings.
  • the open circuit of the series driving device is connected, and the remaining N secondary windings are respectively connected with the closing circuit of the other N series driving devices. It can realize the functional integration of 2N (N ⁇ 2) power electronic devices.
  • the drive method 2 drive connection methods all belong to the protection category of this application; the source of M2 and the drain of M3 in Figure 11 of the accompanying drawings can be connected together, in fact The source of M2 may not be connected with the drain of M3, and the function integration of 2N (N ⁇ 2) power electronic devices drives the source of the last device in the N series drive devices and the other N series drives.
  • the drains of the first device in the device may or may not be connected together, and so on.
  • Embodiment 1, embodiment 2, embodiment 3 in the present application described content and scope of protection all apply to embodiment 4, all other embodiments obtained by those of ordinary skill in the art without making creative work, all Belong to the protection scope of this application.
  • the durations of the two first/second edge control signals sent by the edge control generating circuit are the same as in Embodiments 3 and 4 described in this application because they involve complementary driving.
  • the duration of the first edge control signal and the second edge control signal in the serial driving method described in Embodiment 2 and the edge isolation driving basic circuit topology described in Embodiment 1 may be the same or different.
  • the duration of the first edge control signal The duration is longer than the duration of the second edge control signal.
  • the duration of the edge control signal used to realize the turn-on/turn-off of the power electronic device Mi is on the order of nanoseconds, and the energy transmitted by the driving transformer is small , so the first driving transformer T1 and the second driving transformer T2 described in Embodiments 1-4 can use very small transformers, either wire-wound transformers or PCB planar transformers. It should be understood that any type of transformer (such as a traditional wire-wound transformer) capable of realizing the function of the edge isolation driving circuit of the present application falls within the scope of protection of the present application.
  • the embodiment of the present application also provides an electronic device, the electronic device includes the drive device described in any of the above embodiments.
  • the edge control generation module 10 outputs the first edge control signal and the second edge control signal at intervals, and uses the first edge control signal to control the first driving module 20 to output the first edge driving to the switch module 40 signal, using the second edge control signal to control the second drive module 30 to output the second edge drive signal to the switch module 40, and the switch module 40 turns on the power electronic device 50 under the control of the first edge drive signal and the second edge drive signal , off, the power electronic device is continuously turned on in the time interval between the rising edge of the first edge driving signal and the rising edge of the second edge driving signal, so as to realize turning on or off according to the first edge driving signal and the second edge driving signal Cut off the driving signal of the power electronic device.
  • the edge control generation module outputs the first edge control signal and the second edge control signal at intervals
  • the first edge control signal is used to control the first drive module to output the first edge drive signal to the switch module
  • the second edge control The signal controls the second drive module to output the second edge drive signal to the switch module
  • the switch module turns on and off the power electronic device under the control of the first edge drive signal and the second edge drive signal
  • the power electronic device is on the first edge Continuous conduction in the time interval between the rising edge of the driving signal and the rising edge of the second edge driving signal, so as to turn on or turn off the driving signal of the power electronic device according to the first edge driving signal and the second edge driving signal.

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Abstract

一种驱动装置和电子设备，该驱动装置包括边缘控制发生模块(10)、第一驱动模块(20)、第二驱动模块(30)和开关模块(40)。通过边缘控制发生模块(10)间隔输出第一边缘控制信号和第二边缘控制信号，利用第一边缘控制信号控制第一驱动模块(20)向开关模块(40)输出第一边缘驱动信号，利用第二边缘控制信号控制第二驱动模块(30)向开关模块(40)输出第二边缘驱动信号，使得电力电子器件在第一边缘驱动信号、第二边缘驱动信号的控制下导通、截止。

Description

驱动装置和电子设备
相关申请的交叉引用
本申请基于申请号为202110929027.9，申请日为2021年08月13日的中国专利申请提出，并要求该中国专利申请的优先权，该中国专利申请的全部内容在此引入本申请作为参考。
技术领域
本申请涉及电子技术领域，特别是涉及一种驱动装置和电子设备。
背景技术
一些情形中，对电力电子器件的驱动，通常由驱动装置向电力电子器件输出一个高电平的驱动信号，以使电力电子器件导通。一般来说，电力电子器件的导通时间与高电平信号的持续时间是一致的，电力电子器件在接收到高电平上升沿信号时开始导通，在接收到高电平下降沿信号时开始关断。这种驱动方式，为维持电力电子器件的持续导通所需的能量较多，会造成较大的驱动损耗，而且驱动装置一般使用体积较大的变压器进行驱动，造成驱动装置整体体积较大。
发明内容
以下是对本文详细描述的主题的概述。本概述并非是为了限制权利要求的保护范围。
本申请实施例提供一种驱动装置和电子设备。
第一方面，本申请实施例提供了一种驱动装置，包括：边缘控制发生模块，被设置为间隔输出第一边缘控制信号和第二边缘控制信号；第一驱动模块，被设置为从所述边缘控制发生模块接收所述第一边缘控制信号，并根据所述第一边缘控制信号输出至少一个第一边缘驱动信号；第二驱动模块，被设置为从所述边缘控制发生模块接收所述第二边缘控制信号，并根据所述第二边缘控制信号输出至少一个第二边缘驱动信号；至少一个开关模块，所述开关模块分别被设置为从所述第一驱动模块接收所述第一边缘驱动信号和从所述第二驱动模块接收所述第二边缘驱动信号，并根据所述第一边缘驱动信号和所述第二边缘驱动信号开通或者关断电力电子器件。
第二方面，本申请实施例提供了一种电子设备，包括如第一方面所述的驱动装置。
附图说明
附图用来提供对本申请技术方案的进一步理解，并且构成说明书的一部分，与本申请的实施例一起用于解释本申请的技术方案，并不构成对本申请技术方案的限制。
图1是一些情形中电力电子器件导通信号与驱动信号的波形关系示意图；
图2是本申请实施例提供的一种驱动装置的结构示意图；
图3是本申请实施例的电力电子器件的导通信号与第一边缘控制信号、第二边缘控制信号的一种波形关系示意图；
图4是本申请实施例提供的一种驱动装置的电路结构示意图；
图5是本申请实施例提供的另一种驱动装置的电路结构示意图；
图6是本申请实施例的电力电子器件的导通信号与第一边缘控制信号、第二边缘控制信号的一种波形关系示意图；
图7是本申请实施例提供的另一种驱动装置的电路结构示意图；
图8是本申请实施例提供的另一种驱动装置的电路结构示意图；
图9是本申请实施例提供的另一种驱动装置的电路结构示意图；
图10是本申请实施例的电力电子器件的导通信号与第一边缘控制信号、第二边缘控制信号的一种波形关系示意图；
图11是本申请实施例提供的另一种驱动装置的电路结构示意图；
图12本申请实施例的电力电子器件的导通信号与第一边缘控制信号、第二边缘控制信号的一种波形关系示意图。
具体实施方式
为了使本申请的目的、技术方案及优点更加清楚明白，以下结合附图及实施例，对本申请进行进一步详细说明。应当理解，此处所描述的具体实施例仅用以解释本申请，并不用于限定本申请。
应了解，在本申请实施例的描述中，如果有描述到“第一”、“第二”等只是用于区分技术特征为目的， 而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量或者隐含指明所指示的技术特征的先后关系。“至少一个”是指一个或者多个，“多个”是指两个或两个以上。“和/或”，描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示单独存在A、同时存在A和B、单独存在B的情况。其中A，B可以是单数或者复数。字符“/”一般表示前后关联对象是一种“或”的关系。“以下至少一项”及其类似表达，是指的这些项中的任意组，包括单项或复数项的任意组。例如，a、b和c中的至少一项可以表示：a，b，c，a和b，a和c，b和c，或者，a和b和c，其中a，b，c可以是单个，也可以是多个。
本领域普通技术人员应当可以意识到，本申请实施例描述的连接包括直接连接和通过中间部件相连的间接连接。
此外，下面所描述的本申请各个实施方式中所涉及到的技术特征只要彼此之间未构成冲突就可以相互组合。
一些情形中，对电力电子器件的驱动，通常由驱动变压器为电力电子器件提供一个高电平信号，以使电力电子器件导通。参见图1，电力电子器件的导通时间T on与高电平信号持续时间T drive一致，电力电子器件从接收到高电平上升沿信号时开始导通，从接收到高电平下降沿信号时开始关断。
这种驱动方式为维持电力电子器件的持续导通所需的能量较多，且会造成较大的驱动损耗。一般来说，实现该驱动方式的驱动变压器的体积通常较大，并通常需要在驱动变压器原边绕组设置隔直电容来防止驱动变压器饱和。除此之外，在改变驱动占空比等的动态工作条件下，由于受到变压器伏秒平衡原理的限制，驱动电平会随着占空比发生变化，导致了这种常见的电力电子器件驱动方法不适用于需要大幅度调节占空比的场合。
鉴于此，本申请实施例提供一种驱动装置和电子设备，无需为维持电力电子器件的持续导通而输出持续的高电平信号，以减小驱动损耗和驱动装置的体积。
请参见图2，图2为本申请实施例提供的一种驱动装置的结构示意图。如图2所示，本申请实施例的驱动装置包括：边缘控制发生模块10、第一驱动模块20、第二驱动模块30和开关模块40。其中，第一驱动模块20和第二驱动模块30的输入端分别连接边缘控制发生模块10，第一驱动模块20和第二驱动模块30的输出端分别连接开关模块40。
可以理解的是，本申请实施例的边缘控制发生模块10被设置为间隔输出第一边缘控制信号和第二边缘控制信号。具体地，边缘控制发生模块10可以通过两个输出端交替输出第一边缘控制信号和第二边缘控制信号，即第一个输出端输出第一边缘控制信号，第二个输出端输出第二边缘控制信号，两个输出端不同时输出边缘控制信号，第一边缘控制信号和第二边缘控制信号的输出时间间隔可以预先设置。
具体实现时，可以将第一边缘控制信号和第二边缘控制信号的高电平持续时间设置为纳秒级的，具体地，可以设置在100ns以内。当然，也可以大于100ns，本申请实施例对此不作限制。
本申请实施例的边缘控制发生模块10具体可以采用ARM、DSP或者其他数字控制芯片实现。
可以理解的是，本申请实施例的第一驱动模块20被设置为从边缘控制发生模块10接收第一边缘控制信号，并根据第一边缘控制信号输出至少一个第一边缘驱动信号；第二驱动模块30被设置为从边缘控制发生模块10接收第二边缘控制信号，并根据第二边缘控制信号输出至少一个第二边缘驱动信号。如此，第一驱动模块20和第二驱动模块30交替输出边缘驱动信号给开关模块40。
可以理解的是，本申请实施例的开关模块40数量为一个或者多个。每一个开关模块40被设置为从第一驱动模块20接收第一边缘驱动信号和从第二驱动模块30接收第二边缘驱动信号，并根据第一边缘驱动信号和第二边缘驱动信号开通或者关断电力电子器件50。
在一些实施例中，当开关模块40接收到来自第一驱动模块20的第一边缘驱动信号后，使电力电子器件50持续导通；当开关模块40接收到来自第二驱动模块30的第二边缘驱动信号后，使得电力电子器件50关断。如此，通过两个连续的边缘驱动信号对电力电子器件50的开通和关断进行控制。
图3是本申请实施例的电力电子器件50的导通信号与第一边缘控制信号、第二边缘控制信号的一种波形关系示意图。图3中，T on表示电力电子器件的导通时间，T off表示电力电子器件的截止时间。如图3所示，电力电子器件50的导通时间T on由接收到第一边缘驱动信号和第二边缘驱动信号的时间间隔决定。
本申请实施例，通过边缘控制发生模块10间隔输出第一边缘控制信号和第二边缘控制信号，利用第一边缘控制信号控制第一驱动模块20向开关模块40输出第一边缘驱动信号，利用第二边缘控制信号控制第二驱动模块30向开关模块40输出第二边缘驱动信号，使得开关模块40在第一边缘驱动信号、第二边缘驱动信号的控制下令电力电子器件50导通、关断，电力电子器件50的导通持续时间为该第一边缘驱动信号上升沿和第二边缘驱动信号上升沿之间的时间间隔，从而实现根据第一边缘驱动信号和第二边缘驱动信号开通或者关断电力电子器件50。在本申请实施例的方案中，无需为维持电力电子器件50导通而给出持续为高的电平，维持电力电子器件50持续导通所需的能量少、驱动损耗小，有利于减小驱动装置的体积。
下面通过几个具体的实施例对本申请提供的驱动装置作进一步详细说明。
实施例1
请参见图4，图4为本申请实施例提供的一种驱动装置的电路结构示意图。
如图4所示，第一驱动模块20可以包括第一驱动变压器T1，第一驱动变压器T1包括第一原边绕组T10 和第一副边绕组T11，其中，第一原边绕组T10连接于边缘控制发生模块10，第一原边绕组T10用于从边缘控制发生模块10接收第一边缘控制信号；第一副边绕组T11连接于开关模块40，第一副边绕组T11用于从第一原边绕组T10感应到第一边缘控制信号后，根据第一边缘控制信号输出一个第一边缘驱动信号至对应的开关模块40。
可以理解的是，本申请实施例的驱动装置还包括供电电路60，该供电电路60可以有多个电压输出端，分别连接第一原边绕组T10的同名端和边缘控制发生模块10，为第一驱动变压器T1、边缘控制发生模块10提供工作电压。
在一些实施例中，边缘控制发生模块10和第一驱动变压器T1之间包括第三开关管S1、第三二极管D1，第三开关管S1的栅极连接于边缘控制发生模块10的第一输出端，第三二极管D1的阳极连接于第三开关管S1的漏极，第三二极管D1的阴极连接于第一原边绕组T10的同名端。
可以理解的是，当边缘控制发生模块10输出第一边缘控制信号至第三开关管S1时，第三开关管S1导通，第三开关管S1将供电电路60与参考地之间的电压施加到第一原边绕组T10的两端，第一副边绕组T11从第一原边绕组T10感应到与第一边缘控制信号对应的边缘电压后，输出第一边缘驱动信号至对应的开关模块40。
如图4所示，第二驱动模块30包括第二驱动变压器T2，第二驱动变压器T2包括第二原边绕组T20和第二副边绕组T21，其中，第二原边绕组T20连接于边缘控制发生模块10，第二原边绕组T20用于从边缘控制发生模块10接收第二边缘控制信号；第二副边绕组T21连接于开关模块40，第二副边绕组T21用于从第二原边绕组T20感应到第二边缘控制信号后，根据第二边缘控制信号输出一个第二边缘驱动信号至对应的开关模块40。
可以理解的是，供电电路60的电压输出端还连接于第二原边绕组T20的同名端，从而为第二驱动变压器T2提供工作电压。
在一些实施例中，边缘控制发生模块10和第二驱动变压器T2之间包括第四开关管S2、第四二极管D2，第四开关管S2的栅极连接于边缘控制发生模块10的第二输出端，第四二极管D2的阳极连接于第四开关管S2的漏极，第四二极管D2的阴极连接于第二原边绕组T20的同名端。
可以理解的是，当边缘控制发生模块10输出第二边缘控制信号至第四开关管S2时，第四开关管S2导通，第四开关管S2将供电电路60与参考地之间的电压施加到第二原边绕组T20的两端，第二副边绕组T21从第二原边绕组T20感应到与第二边缘控制信号对应的边缘电压后，输出第二边缘驱动信号至对应的开关模块40。
应了解，第三二极管D1可以是一个复位二极管，在第一边缘控制信号消失、第三开关管S1截止后给第一驱动变压器T1提供一个放电回路。同理，第四二极管D2也可以是一个复位二极管，在第二边缘控制信号消失、第四开关管S2截止后给第二驱动变压器T2提供一个放电回路。
可以理解的是，本申请实施例的边缘控制发生模块包括边缘控制发生芯片(为ARM、DSP或其他数字控制芯片)，该边缘控制发生芯片用于间隔输出第一边缘控制信号和第二边缘控制信号。
在一种具体的实施例中，边缘控制发生模块还包括第一驱动能力增强电路，边缘控制发生芯片输出第一边缘控制信号至第一驱动能力增强电路，第一驱动能力增强电路对该第一边缘控制信号进行增强处理，并将处理后的所述第一边缘控制信号输出至第三开关管S1的栅极。
在一种具体的实施例中，边缘控制发生模块还包括第二驱动能力增强电路，边缘控制发生芯片输出第二边缘控制信号至所述第二驱动能力增强电路，第二驱动能力增强电路对该第二边缘控制信号进行增强处理，并将处理后的第二边缘控制信号输出至第四开关管S2的栅极。
应了解，供电电路60与边缘控制发生芯片、第一驱动能力增强电路、第一驱动能力增强电路分别连接，从而为边缘控制发生芯片、第一驱动能力增强电路、第一驱动能力增强电路提供工作电压。
在一些实施例中，第一驱动能力增强电路和第二驱动能力增强电路分别为与门电路或者推挽电路。当然，第一驱动能力增强电路和第二驱动能力增强电路还可以是其他可用于增强驱动能力的器件、电路或者装置。还应了解，第一驱动能力增强电路和第二驱动能力增强电路可以是相同或者不同的电路类型，例如，第一驱动能力增强电路为与门电路，第二驱动能力增强电路为推挽电路。本申请实施例对第一驱动能力增强电路、第二驱动能力增强电路的具体电路结构不作过多限制。
可以理解的是，本申请实施例为增强边缘控制发生芯片(为ARM、DSP或其他数字控制芯片)所输出的边缘控制信号的驱动能力，保证第三开关管S1、第四开关管S2能可靠导通，在边缘控制发生芯片和第三开关管S1之间、边缘控制发生芯片和第四开关管S2之间分别设置一级驱动能力增强电路来增强驱动能力。边缘控制发生芯片输出的第一边缘控制信号经第一驱动能力增强电路进行增强处理后，输出至第三开关管S1，以可靠导通第三开关管S1；边缘控制发生芯片输出的第二边缘控制信号经第二驱动能力增强电路进行增强处理后，输出至第四开关管S2，以可靠导通第四开关管S2。
如图4所示，本申请实施例的开关模块40包括开通回路41、关断回路42。
开通回路41包括第一二极管D3和第一驱动输入端VI1，第一二极管D3的阳极连接于第一驱动输入端VI1，第一二极管D3的阴极连接于电力电子器件M1。
关断回路42包括第一开关管S3、第二开关管S4和第二驱动输入端VI2，第一开关管S3的栅极连接于第二驱动输入端VI2，第一开关管S3的漏极连接于第二开关管S4的栅极，第二开关管S4的漏极连接于电力电 子器件M1。
在一种示例中，第一驱动输入端VI1用于从所述第一驱动模块20接收所述第一边缘驱动信号，第二驱动输入端VI2用于从第二驱动模块30接收所述第二边缘驱动信号。
在另一种示例中，所述第一驱动输入端VI1用于从所述第二驱动模块30接收所述第二边缘驱动信号，所述第二驱动输入端VI2用于从第一驱动模块20接收所述第一边缘驱动信号。举例说明，图4的示例中，电力电子器件50包括一个电力电子器件M1，电力电子器件M1具体可以为MOSFET开关管。当然，其他电压驱动型电力电子器件同样可适用于本申请实施例提供的驱动装置的基本电路拓扑结构中。下面，本申请实施例将以电力电子器件为MOSFET开关管进行举例说明。
如图4所示，电力电子器件M1的栅极连接于第一二极管D3的阴极，电力电子器件M1的源极与第一开关管S3的源极、第二开关管S4的漏极连接。
需说明的是，这里第一驱动输入端VI1、第二驱动输入端VI2用于与第一驱动模块20、第二驱动模块30一一对应连接。即第一驱动输入端VI1连接于第一驱动模块20，第二驱动输入端VI2连接于第二驱动模块30。
在图4所示的示例中，开通回路41的第一驱动输入端VI1连接于第一副边绕组T11的同名端，以从第一副边绕组T11接收第一边缘驱动信号；关断回路42的第二驱动输入端VI2连接于第二副边绕组T21的同名端，以从第二副边绕组T21接收第二边缘驱动信号。
作为示例，第一开关管S3为NMOS管，第二开关管S4为PMOS管。当然，第一开关管S3、第二开关管S4还可以是三极管或者其他具有类似功能的器件，本申请实施例中不做限制。
下面结合图4，对开关模块40的工作原理进行说明。
开关模块40的开通过程如下：开通回路41的第一驱动输入端VI1接收到第一副边绕组T11输出的第一边缘驱动信号后，经第一二极管D3将第一边缘驱动信号传输至电力电子器件M1的栅极，使电力电子器件M1导通，实现电力电子器件的开通。第一二极管D3的单向导电性使得电力电子器件M1的栅极电容在第一边缘驱动信号消失后继续维持在使电力电子器件M1导通的高电平电压，而不会出现电力电子器件M1的栅极电容反向放电，因此允许施加到第一驱动变压器T1的第一原边绕组T10的第一边缘控制信号的持续时间大大缩短。第一边缘控制信号的持续时间可以为20ns-100ns，当然也可以大于100ns。
开关模块40的关断过程如下：关断回路42的第二驱动输入端VI2接收到第二副边绕组T21输出的第二边缘驱动信号后，将第二边缘驱动信号传输第一开关管S3的栅极，使第一开关管S3导通并传输第二边缘驱动信号至第二开关管S4，继而使第二开关管S4导通，第二开关管S4导通后，为电力电子器件M1提供了一个放电回路，从而使电力电子器件M1截止，实现电力电子器件的关断。
图4所示驱动装置中的电力电子器件M1的导通信号与第一边缘控制信号、第二边缘控制信号的波形关系可参见图3。
在一些实施例中，如图4所示，开通回路41还可以包括第一电阻R2，第一电阻R2连接于第一二极管D3的阴极和电力电子器件M1之间。该第一电阻R2用于限制电力电子器件M1的栅极充电电流，起到开通限流作用，以减小EMI。
在一些实施例中，如图4所示，关断回路42还可以包括第二电阻R3，第二电阻R3连接于第二开关管S4的源极和电力电子器件M1之间。第二电阻R3用于限制电力电子器件M1的关断速度，起到关断限流作用，以减小EMI。
在一些实施例中，如图4所示，关断回路42还可以包括第二二极管D4和RC回路，RC回路连接于第一开关管S3的漏极和源极之间，第二二极管D4的阳极连接于第一驱动输入端VI1，第二二极管D4的阴极连接于RC回路。
具体地，RC回路包括第三电阻R1和第一电容C1，第三电阻R1与第一电容C1并联连接。
可以理解的是，基于该RC回路，本申请实施例的关断回路42还提供了一种故障保护机制来实现电力电子器件的自动关断。该故障保护机制的工作原理如下。
在第一边缘驱动信号到来时，第一电阻R2的存在使得PMOS型的第二开关管S4的栅极电平大于其源极电平，电力电子器件M1导通过程中第二开关管S4始终处于截止状态；在忽略第二二极管D4导通压降前提下，第一电容C1经过第二二极管D4充电至第一副边绕组T11两端电压，此后由于第二二极管D4的单向导电性以及第二边缘控制信号还未到来，第一开关管S3截止，第一电容C1将通过第三电阻R1进行放电。由于选取的R1阻值较大，R1、C1构成的RC充放电组合时间常数较大，故在正常的第二边缘控制信号来临之前，第二开关管S4始终处于截止状态，即电力电子器件M1的栅源极电压保持在高电平、持续导通。正常的第二边缘控制信号到来时，第一开关管S3导通，给第一电容C1提供一个小阻值放电回路，从而使得第二开关管S4的栅极电平小于源极电平，第二开关管S4开始导通，将电力电子器件M1的栅源极两端电压钳位在一个低于栅极开启电压的电压值，电力电子器件M1的栅源极电压通过第二电阻R3和第二开关管S4进行快速放电，实现电力电子器件M1的正常快速关断。若无第二边缘控制信号且后续第一边缘控制信号也未出现，第一电容C1两端电压将通过第三电阻R1进行缓慢放电，直至某一时刻第二开关管S4的栅极电平小于源极电平、第二开关管S4导通，电力电子器件M1的栅源极电压开始下降，实现自我关断。
应了解，本申请实施例选取的R1C1组合时间常数可定为电力电子器件M1典型开关周期的3倍以内，也 可根据实际应用场景进行相应调整。
需说明的是，由于第二驱动变压器T2并不需要如第一驱动变压器T1，给电力电子器件M1的栅极电容提供能量充电，因此第二驱动变压器T2可使用其他隔离型信号传输装置作为替代，例如光耦。
可以理解的是，图4的示例在具体实现时，第二边缘控制信号的持续时间可以低于第一边缘控制信号的持续时间，例如，第一边缘控制信号的持续时间为100ns，第二边缘控制信号的持续时间为20-50ns。当然，第二边缘控制信号的持续时间也可与第一边缘持续时间一样。
应了解，本申请实施例描述的第三开关管S1和第四开关管S2可以是任何全控型开关管。
实施例2
请参见图5，图5为本申请实施例提供的另一种驱动装置的电路结构示意图。
某些特定场合下，比如考虑到成本、电力电子器件(例如MOSFET)的业内通用电压等级等因素时，需要使用串联电力电子器件的技术(例如高压场合)，以降低成本或者提高耐压。但是串联MOSFET的驱动方案，业内并无很好的解决方案。因为MOSFET器件没有自动均压的特性，器件内部参数的微小差异就会影响到串联电力电子器件在开关过程中漏源极电压的不平衡。尤其是在串联电力电子器件中开通过程较慢或者关断过程较快的器件必将承受更高的电压，严重时会导致过压击穿的现象。而电力电子器件串联时电力电子器件动态电压不均衡主要由外部驱动信号的不一致和器件本身的离散性决定。
本申请实施例提供了一种边缘隔离驱动方案，该方案下驱动变压器维持电力电子器件持续导通所需的能量少、驱动损耗小，相应地驱动变压器的体积小、绕组匝数少，从而降低了漏感等寄生参数的影响，副边多路绕组输出的驱动一致性好，能够很好的保证多路串联驱动的开关速度一致性，解决了上述问题。
图5所示的驱动装置提供了一种N(N≥2)个电力电子器件串联驱动的方案。
在图5所示的示例中，第一驱动模块20包括第一驱动变压器T1，第一驱动变压器T1包括第一原边绕组T10和N个第一副边绕组(T11、T12、…、T1N)；第二驱动模块30包括第二驱动变压器T2，第二驱动变压器T2包括第二原边绕组T20和N个第二副边绕组(T21、T22、…、T2N)。
可以理解的是，图5中的第一驱动变压器T1、第二驱动变压器T2是以多绕组变压器为示例，N个单绕组变压器替代1个多绕组变压器(N个相同副边绕组)的串联驱动方法亦属于本申请保护范畴。
在图5所示的示例中，开关模块40的数量为N个，每个开关模块40均包括开通回路41和关断回路42，N个开通回路41与N个第一副边绕组一一对应连接，N个关断回路42与N个第二副边绕组一一对应连接。图5中的VI11、VI12、…、VI1N对应表示N个开通回路41的第一驱动输入端，VI21、VI22、…、VI2N对应表示N个关断回路42的第二驱动输入端。
可以理解的是，图5中的绕组的分布以及与开关模块40的连接顺序不是唯一的，任何可实现N(N≥2)个电力电子器件的串联驱动的连接方式均属于本申请保护范畴。
在图5中，电力电子器件50包括串联电力电子器件组合∑Mi(i＝1、2、…、N，N≥2)。N个电力电子器件Mi与N个开关模块40连接一一对应连接。
应了解，图5所示的示例中，每个开关模块40的具体电路拓扑结构与图4所示的开关模块40的电路拓扑结构一致，故此处不再赘述。
图5所示的驱动装置的具体工作原理如下：边缘控制发生模块10输出一个第一边缘控制信号至第三开关管S1的栅极，使第三开关管S1导通，将供电电路与参考地之间的电压施加到第一驱动变压器T1的第一原边绕组T10的两端，第一驱动变压器T1的N个第一副边绕组(T11、T12、…、T1N)分别从第一原边绕组T10感应出一个与第一边缘控制信号对应的边缘电压，并输出N个第一边缘驱动信号，分别作用在每个电力电子器件Mi(i＝1、2、…、N)对应的开通回路41上，用于开通电力电子器件Mi(i＝1、2、…、N)，实现控制串联电力电子器件组合的开通。边缘控制发生模块10输出一个第二边缘控制信号至第四开关管S2的栅极，使第四开关管S2导通，将供电电电路与参考地之间的电压施加到第二驱动变压器T2的第二原边绕组T20的两端，第二驱动变压器T2的N个第二副边绕组(T21、T22、…、T2N)分别从第二原边绕组T20感应出一个与第二边缘控制信号对应的边缘电压，并输出N个第二边缘驱动信号，分别作用在每个电力电子器件Mi(i＝1、2、…、N)的关断回路42上，用于关断电力电子器件Mi(i＝1、2、…、N)。具体的单个电力电子器件Mi(i＝1、2、…、N)的开通、关断的工作过程在实施例1中已经详细阐述过，此处不再赘述。
图5中每个电力电子器件Mi(i＝1、2、…、N)的导通信号与第一边缘控制信号、第二边缘控制信号的波形关系可参见图6。图6中，T on表示电力电子器件的导通时间，T off表示电力电子器件的截止时间。如图6所示，每个电力电子器件Mi(i＝1、2、…、N)的导通时间T on由接收到第一边缘驱动信号和第二边缘驱动信号的时间间隔决定。
在针对实施例2描述的电力电子器件串联驱动方案的一种具体实施例中，将驱动装置的电路拓扑中具有相同功能的器件集成在一个封装部件内以获取更优的串联驱动一致性。例如，将N个开通回路41中的第一二极管D3集成在一个封装部件内；将N个关断回路42中的第二二极管D4集成在一个封装部件内；将N个关断回路42中的第一开关管S3集成在一个封装内；又或者，将N个关断回路42中的PMOS型第二开关管S4集成在一个封装内。
在一些实施例中，图7示出了一种被设置为实现两个电力电子器件串联驱动的驱动装置的电路结构。在 图7所示示例中，将两个开通回路41中的第一二极管(D31、D32)集成在一个封装部件H内。
在图7所示的串联驱动集成器件方案中，第一驱动变压器T1的第一副边绕组T11、T12与用于驱动电力电子器件M1、M2的开通回路41连接时，第一驱动变压器T1的第一副边绕组T11的同名端以及第一副边绕组T12的同名端与二合一封装H的两个输入端一一对应连接，二合一封装H内部集成封装了两个第一二极管D31和D32，二合一封装H的两个输出端再分别与两个第一电阻R21、R22的一端相连。需说明的是，单个电力电子器件Mi的开通回路41/关断回路42内部的器件连接方式以及开通、关断过程在实施例1已详细叙述过，此处不再赘述。
还需说明的是，图7所描述的实施例仅以开通回路中二极管D3为例，展示实施例2实现串联驱动的一种集成器件方案。本申请所述基于实施例1描述的边缘驱动隔离基本电路拓扑的串联驱动方法集成器件方案包括但不限于N(N≥2)个开通回路中的二级管D3集成在一个封装内，N(N≥2)个关断回路中的二级管D4集成在一个封装内、N(N≥2)个关断回路中的开关管S3集成在一个封装内以及N(N≥2)个关断回路中的PMOS型场开关管S4集成在一个封装内或任意选择几个器件集成封装组合均属于本申请保护内容范畴。本申请实施例2基于实施例1描述的边缘驱动隔离基本电路拓扑的串联驱动方法集成器件方案不局限于某一种具体的集成器件封装，任何能实现N个具有相同功能器件集成在一起的封装也属于本申请保护的范畴。
本申请中的实施例1所述内容和保护范围均适用于实施例2，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
应当了解，在实现实施例2描述的电力电子器件串联驱动方案时，除集成器件方案之外，还可采用分立器件的方案。
例如，图8为一种采用分立器件方案的实现电力电子器件串联驱动的驱动装置，区别于图7所示的示例，在图8所示的示例中，两个开通回路41之间具有相同功能的器件均独立封装，同理，两个关断回路42之间具有相同功能的器件也均独立封装。
需说明的是，图5、图7和图8所描述的实施例仅仅是本申请实施例的一部分，而不是全部的实施例2。例如，N个单绕组变压器替代1个多绕组变压器(N个相同副边绕组)的串联驱动方法亦属于本申请保护范畴；图5、图7和图8中绕组的分布以及与驱动电路的连接顺序不是唯一的，任何可实现N(N≥2)个电力电子器件的串联驱动的连接方式均属于本申请保护范畴，等等。实施例2所述基于实施例1所述边缘隔离驱动拓扑的串联驱动方法除集成器件方案之外，还有一种分立器件方案。本申请中的实施例1所述内容和保护范围均适用于实施例2，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
实施例3
本申请实施例提供的驱动装置所采用的基本电路拓扑中，电力电子器件M1的开通、关断分别由两个驱动模块控制，其结构和功能上的这种特点使得其还可适用于互补驱动场合，例如半桥、全桥等应用。基于此，本申请在实施例1描述的基本电路拓扑的基础上，提出了一种互补驱动的方案。
请参见图9，图9为本申请实施例提供的另一种驱动装置的电路结构示意图。
在图9所示的驱动装置中，开关模块40包括第一开关模块40a和第二开关模块40b，第一开关模块40a和第二开关模块40b均包括上述开通电路和关断电路。其中，第一开关模块40a的第一驱动输入端VI11连接于第一驱动模块20，第一开关模块40a的第二驱动输入端VI21连接于第二驱动模块30；第二开关模块40b的第一驱动输入端VI12连接于第二驱动模块30，第二开关模块40b的第二驱动输入端VI22连接于第一驱动模块20。第一开关模块40a连接有电力电子器件M1，第二开关模块40b连接有电力电子器件M2。
图9中的第一开关模块40a和第二开关模块40b的开通电路、关断电路的电路拓扑结构与图4所示示例中的开通电路、关断电路的电路拓扑结构一致，此处不再赘述。
可以理解的是，第一驱动模块20包括第一驱动变压器T1，第一驱动变压器T1包括第一原边绕组T10和至少两个第一副边绕组(T11、T12、…)；第二驱动模块30包括第二驱动变压器T2，第二驱动变压器T2包括第二原边绕组T20和至少两个第二副边绕组(T21、T22、…)。
在一些实施例中，如图9所示，对于第一开关模块40a，其开通电路的第一驱动输入端VI11与第一副边绕组T11连接，其关断电路的第二驱动输入端VI21与第二副边绕组T21连接；对于第二开关模块40b，其开通电路的第一驱动输入端VI12与第二副边绕组T22连接，其关断电路的第二驱动输入端VI22与第一副边绕组T12连接。第一开关模块40a对应与电力电子器件M1连接，第二开关模块40b对应与电力电子器件M2连接。
图9所示驱动装置能实现数字电路的异或门逻辑功能(又称“异或”驱动技术)。具体的单个电力电子器件Mi(i＝1、2)的开通回路41、关断回路42的工作过程在实施例1中已经详细阐述过，此处不再赘述。
当边缘控制发生模块10间隔交替地输出第一边缘控制信号、第二边缘控制信号时，图9所示示例中的电力电子器件M1、电力电子器件M2的导通信号与第一边缘控制信号、第二边缘控制信号的波形关系如图10所示。图10中，T on表示电力电子器件的导通时间，T off表示电力电子器件的截止时间。由图10可见，电力电子器件M1、M2的导通信号呈互补的波形关系，即M1导通时，M2截止；M1截止时，M2导通。
M1、M2的导通信号之间的死区时间(T dead)可通过图4中第一电阻R2和第二电阻R3来调整。还可在驱 动变压器T1和T2的副边绕组的同名端与各个电力电子器件开通回路41的第一二极管D3的阳极之间再串联一个电阻来调节死区时间。
图9所示的驱动装置的工作原理如下。
边缘控制发生模块10输出一个第一边缘控制信号至第三开关管S1的栅极，使第三开关管S1导通，将供电电电路与参考地之间的电压施加到第一驱动变压器T1的第一原边绕组T10的两端，T1的两个第一副边绕组T11、T12分别从第一原边绕组T10感应出与第一边缘控制信号对应的边缘电压并分别输出第一边缘驱动信号，T11输出的第一边缘驱动信号作用在电力电子器件M1的开通回路41上，使电力电子器件M1导通；T12输出的第一边缘驱动信号作用在电力电子器件M2的关断回路42上，使电力电子器件M2关断。这里边缘控制发生模块10输出的第一边缘控制信号具有能够同时实现M1开通和M2关断的复用功能。
边缘控制发生模块10输出一个第二边缘控制信号至第四开关管S2的栅极，使第四开关管S2导通，将供电电电路与参考地之间的电压施加到第二驱动变压器T2的第二原边绕组T20的两端，第二驱动变压器T2的两个第二副边绕组T21、T22分别从第二原边绕组T20感应出与第二边缘控制信号对应的边缘电压并分别输出第二边缘驱动信号，T21输出的第二边缘驱动信号作用在电力电子器件M1的关断回路42上，使电力电子器件M1关断；T22输出的第二边缘驱动信号作用在电力电子器件M2的开通回路41上，使电力电子器件M2导通。这里边缘控制发生模块10输出的第二边缘控制信号具有能够同时实现M2开通和M1关断的复用功能。
图9中的第三二极管D1可以是一个复位二极管，在第一边缘控制信号消失、第三开关管S1截止后给第一驱动变压器T1提供一个放电回路。同理，第四二极管D2也可以是一个复位二极管，在第二边缘控制信号消失、第四开关管S2截止后给第二驱动变压器T2提供一个放电回路。基于第三二极管D1和第四二极管D2，驱动装置的电路会复位，使M1、M2均不导通。
需说明的是，图9所描述的实施例仅仅是本申请实施例的一部分，而不是全部的实施例3。例如，图9是以多绕组变压器为示例，2个单绕组变压器替代1个多绕组变压器(2个相同副边绕组)的互补驱动方法亦属于本申请保护范畴；图9中M1的源极和M2的漏极可连在一起、也可不连在一起；图9中绕组的分布以及与驱动电路的连接顺序不是唯一的，任何可实现2个电力电子器件的互补驱动的连接方式均属于本申请保护范畴等等。本申请中的实施例1所述内容和保护范围均适用于实施例3，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
实施例4
请参见图11，图11为本申请实施例提供的又一种驱动装置的电路结构示意图。
在图11所示的驱动装置中，开关模块40包括第一开关模块40a和第二开关模块40b，且第一开关模块40a和第二开关模块40b的数量均为多个。每个第一开关模块40a的第一驱动输入端分别连接于第一驱动模块20，每个第一开关模块40a的第二驱动输入端分别连接于第二驱动模块30；每个第二开关模块40b的第一驱动输入端分别连接于第二驱动模块30，每个第二开关模块40b的第二驱动输入端分别连接于第一驱动模块20。
图11中的第一开关模块40a和第二开关模块40b的开通电路、关断电路的电路拓扑结构与图4所示示例中的开通电路、关断电路的电路拓扑结构一致，此处不再赘述。
在图11所示的驱动装置中，包括第一电力电子器件组合和第二电力电子器件组合，该第一电力电子器件组合、第二电力电子器件组合分别包括至少两个串联连接的电力电子器件。例如，第一电力电子器件组合包括电力电子器件M1和M2，第二电力电子器件组合包括电力电子器件M3和M4。第一电力电子器件组合中的电力电子器件M1和M2对应连接一个第一开关模块40a，第二电力电子器件组合中的电力电子器件M3和M4对应连接一个第二开关模块40b。
在一些实施例中，如图11所示，第一驱动模块20包括第一驱动变压器T1，第一驱动变压器T1包括第一原边绕组T10和第一副边绕组T11、T12、T13、T14；第二驱动模块30包括第二驱动变压器T2，第二驱动变压器T2包括第二原边绕组T20和第二副边绕组T21、T22、T23、T24。两个第一开关模块40a的开通回路41的第一驱动输入端VI11、VI12，对应连接于第一副边绕组T11、T12；两个第一开关模块40a的关断回路42的第二驱动输入端VI21、VI22，对应连接于第二副边绕组T21、T22；两个第二开关模块40b的开通回路41的第一驱动输入端VI13、VI14，对应连接于第二副边绕组T23、T24；两个第二开关模块40b的关断回路42的第二驱动输入端VI23、VI24，对应连接于第一副边绕组T13、T14。
图11所示的驱动装置的工作原理如下。
边缘控制发生模块10输出一个第一边缘控制信号至第三开关管S1的栅极，使第三开关管S1导通，将供电电电路与参考地之间的电压施加到第一驱动变压器T1的第一原边绕组T10的两端，T1的第一副边绕组T11、T12、T13、T14分别从第一原边绕组T10感应出与第一边缘控制信号对应的边缘电压并分别输出第一边缘驱动信号，T11、T12输出的第一边缘驱动信号作用在电力电子器件M1、M2的开通回路41上，使电力电子器件M1、M2导通；T13、T14输出的第一边缘驱动信号作用在电力电子器件M3、M4的关断回路42上，使电力电子器件M3、M4关断。这里边缘控制发生模块10输出的第一边缘控制信号具有同时实现M1、M2开通和M3、M4关断的复用功能。
边缘控制发生模块10输出一个第二边缘控制信号至第四开关管S2的栅极，使第四开关管S2导通，将供 电电电路与参考地之间的电压施加到第二驱动变压器T2的第二原边绕组T20的两端，第二驱动变压器T2的第二副边绕组T21、T22、T23、T24分别从第二原边绕组T20感应出与第二边缘控制信号对应的边缘电压并分别输出第二边缘驱动信号，T21、T22输出的第二边缘驱动信号作用在电力电子器件M1、M2的关断回路42上，使电力电子器件M1、M2关断；T23、T24输出的第二边缘驱动信号作用在电力电子器件M3、M4的开通回路41上，使电力电子器件M3、M4导通。这里边缘控制发生模块10输出的第二边缘控制信号具有同时实现M3、M4开通和M1、M2关断的复用功能。
图11所示示例中的电力电子器件M1、M2、M3、M4的导通信号与第一边缘控制信号、第二边缘控制信号的波形关系如图12所示。M1+M2串联驱动组合、M3+M4串联驱动组合驱动之间的死区时间(Tdead)通过图4中第一电阻R2和第二电阻R3来调整。还可在驱动变压器T1和T2的副边绕组的同名端与各个电力电子器件开通回路41的第一二极管D3的阳极之间再串联一个电阻来调节死区时间。
图11中的第三二极管D1可以是一个复位二极管，在第一边缘控制信号消失、第三开关管S1截止后给第一驱动变压器T1提供一个放电回路。同理，第四二极管D2也可以是一个复位二极管，在第二边缘控制信号消失、第四开关管S2截止后给第二驱动变压器T2提供一个放电回路。基于第三二极管D1和第四二极管D2，驱动装置的电路会复位，使M1、M2、M3、M4均不导通。
可以理解的是，示例4的方案集成了实施例2的串联驱动功能和实施例3的互补驱动功能。
需说明的是，图11所描述的实施例仅仅是本申请一部分实施例，而不是全部的实施例4，例如图11中是以4个电力电子器件的驱动为例，本申请实施例4所述的功能集成方法2包括但不限于4个电力电子器件的驱动，2N(N≥2)个电力电子器件的驱动也是适用的(每N个器件是串联驱动关系，N个串联驱动器件组合和另外N个串联驱动器件组合之间是互补驱动关系)，本申请实施例4所述第一/第二边缘驱动变压器T1和T2各有2N个副边绕组，N个副边绕组分别与N个串联驱动器件的开通回路相连，剩余N个副边绕组则分别与另外N个串联驱动器件组合的关断回路相连，附图图11中绕组的分布以及与驱动电路的连接顺序不是唯一的，任何可实现2N(N≥2)个电力电子器件的功能集成驱动方法2驱动的连接方式均属于本申请保护范畴；附图图11中M2的源极和M3的漏极可连在一起，实际上M2的源极也可不与M3的漏极连在一起，2N(N≥2)个电力电子器件的功能集成驱动应用中N个串联驱动器件中最后一个器件的源极和另外的N个串联驱动器件中第一个器件的漏极之间可以连在一起、也可不连接在一起的，等等。本申请中的实施例1、实施例2、实施例3所述内容和保护范围均适用于实施例4，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
需说明的是，本申请所述的实施例3和4因为涉及互补驱动，边缘控制发生电路发出的两个第一/第二边缘控制信号的持续时间是一样的。而实施例2描述的串联驱动方法以及实施例1描述的边缘隔离驱动基本电路拓扑中第一边缘控制信号、第二边缘控制信号的持续时间可以相同、也可以不同，一般第一边缘控制信号的持续时间要大于第二边缘控制信号的持续时间。
本申请实施例描述的边缘隔离驱动方法中实现电力电子器件Mi(i＝1、2、…、N)开通/关断所用的边缘控制信号的持续时间为纳秒数量级，驱动变压器传递的能量少，因此实施例1-4所述的第一驱动变压器T1、第二驱动变压器T2可以使用非常小的变压器，绕线式变压器、PCB平面变压器均可。应了解，任何能够实现本申请边缘隔离驱动电路功能的变压器类型(例如传统的绕线式变压器)均属于本申请保护范畴。
应了解，本申请对各个实施例的描述都各有侧重，某个实施例中没有详述或记载的部分，可以参见其它实施例的相关描述。
本申请实施例还提供了一种电子设备，该电子设备包括以上任意实施例描述的驱动装置。
本申请实施例提供的电子设备，通过边缘控制发生模块10间隔输出第一边缘控制信号和第二边缘控制信号，利用第一边缘控制信号控制第一驱动模块20向开关模块40输出第一边缘驱动信号，利用第二边缘控制信号控制第二驱动模块30向开关模块40输出第二边缘驱动信号，开关模块40在第一边缘驱动信号、第二边缘驱动信号的控制下使电力电子器件50导通、关断，电力电子器件在第一边缘驱动信号上升沿和第二边缘驱动信号上升沿之间的时间间隔内持续导通，从而实现根据第一边缘驱动信号和第二边缘驱动信号开通或者关断电力电子器件的驱动信号。在本申请实施例的方案中，无需为维持电力电子器件50导通而给出持续为高的电平，维持电力电子器件持续导通所需的能量少、驱动损耗小，有利于减小驱动装置的体积。
本申请实施例，通过边缘控制发生模块间隔输出第一边缘控制信号和第二边缘控制信号，利用第一边缘控制信号控制第一驱动模块向开关模块输出第一边缘驱动信号，利用第二边缘控制信号控制第二驱动模块向开关模块输出第二边缘驱动信号，开关模块在第一边缘驱动信号、第二边缘驱动信号的控制下使电力电子器件导通、关断，电力电子器件在第一边缘驱动信号上升沿和第二边缘驱动信号上升沿之间的时间间隔内持续导通，从而实现根据第一边缘驱动信号和第二边缘驱动信号开通或者关断电力电子器件的驱动信号。在本申请实施例的方案中，无需为维持电力电子器件导通而给出持续为高的电平，维持电力电子器件持续导通所需的能量少、驱动损耗小，有利于减小驱动装置的体积。
以上是对本申请的若干实施方式进行了具体说明，但本申请并不局限于上述实施方式，熟悉本领域的技术人员在不违背本申请精神的。共享条件下还可作出种种等同的变形或替换，这些等同的变形或替换均包括在本申请权利要求所限定的范围内。

Claims (12)

  1. 一种驱动装置，包括：
    边缘控制发生模块，被设置为间隔输出第一边缘控制信号和第二边缘控制信号；
    第一驱动模块，被设置为从所述边缘控制发生模块接收所述第一边缘控制信号，并根据所述第一边缘控制信号输出至少一个第一边缘驱动信号；
    第二驱动模块，被设置为从所述边缘控制发生模块接收所述第二边缘控制信号，并根据所述第二边缘控制信号输出至少一个第二边缘驱动信号；
    至少一个开关模块，所述开关模块被设置为从所述第一驱动模块接收所述第一边缘驱动信号和从所述第二驱动模块接收所述第二边缘驱动信号，并根据所述第一边缘驱动信号和所述第二边缘驱动信号开通或者关断电力电子器件。
  2. 根据权利要求1所述的驱动装置，其中，所述开关模块包括开通回路、关断回路；
    所述开通回路包括第一二极管和第一驱动输入端，所述第一二极管的阳极连接于所述第一驱动输入端，所述第一二极管的阴极连接于所述电力电子器件；
    所述关断回路包括第一开关管、第二开关管和第二驱动输入端，所述第一开关管的栅极连接于所述第二驱动输入端，所述第一开关管的漏极连接于所述第二开关管的栅极，所述第二开关管的漏极连接于所述电力电子器件；
    所述第一驱动输入端用于从所述第一驱动模块接收所述第一边缘驱动信号，所述第二驱动输入端用于从所述第二驱动模块接收所述第二边缘驱动信号；或者，所述第一驱动输入端用于从所述第二驱动模块接收所述第二边缘驱动信号，所述第二驱动输入端用于从所述第一驱动模块接收所述第一边缘驱动信号。
  3. 根据权利要求2所述的驱动装置，其中，所述开通回路还包括第一电阻，所述第一电阻连接于所述第一二极管的阴极和所述电力电子器件之间；
    所述关断回路还包括第二电阻，所述第二电阻连接于所述第二开关管的源极和所述电力电子器件之间。
  4. 根据权利要求2所述的驱动装置，其中，所述关断回路还包括第二二极管和RC回路，所述RC回路连接于所述第一开关管的漏极和源极之间，所述第二二极管的阳极连接于所述第一驱动输入端，所述第二二极管的阴极连接于所述RC回路。
  5. 根据权利要求2至4任一所述的驱动装置，其中，所述开关模块包括第一开关模块和第二开关模块，所述第一开关模块和所述第二开关模块均包括所述开通回路和所述关断回路；
    所述第一开关模块的所述第一驱动输入端连接于所述第一驱动模块，所述第一开关模块的所述第二驱动输入端连接于所述第二驱动模块；
    所述第二开关模块的所述第一驱动输入端连接于所述第二驱动模块，所述第二开关模块的所述第二驱动输入端连接于所述第一驱动模块。
  6. 根据权利要求1所述的驱动装置，其中，所述第一驱动模块包括第一驱动变压器，所述第一驱动变压器包括第一原边绕组和至少一个第一副边绕组，所述第一原边绕组用于从边缘控制发生模块接收所述第一边缘控制信号，每个所述第一副边绕组用于根据所述第一边缘控制信号输出一个第一边缘驱动信号。
  7. 根据权利要求6所述的驱动装置，其中，所述边缘控制发生模块和所述第一驱动变压器之间设置有第三开关管、第三二极管，所述第三开关管的栅极连接于所述边缘控制发生模块的第一输出端，所述第三二极管的阳极连接于所述第三开关管的漏极，所述第三二极管的阴极连接于所述第一原边绕组的同名端。
  8. 根据权利要求7所述的驱动装置，其中，所述边缘控制发生模块包括边缘控制发生芯片和第一驱动能力增强电路；
    所述边缘控制发生芯片用于输出所述第一边缘控制信号至所述第一驱动能力增强电路；
    所述第一驱动能力增强电路对所述第一边缘控制信号进行增强处理，并将处理后的所述第一边缘控制信号输出至所述第三开关管的栅极。
  9. 根据权利要求1所述的驱动装置，其中，所述第二驱动模块包括第二驱动变压器，所述第二驱动变压器包括第二原边绕组和至少一个第二副边绕组，所述第二原边绕组用于从边缘控制发生模块接收所述第二边缘控制信号，每个所述第二副边绕组用于根据所述第二边缘控制信号输出一个第二边缘驱动信号。
  10. 根据权利要求9所述的驱动装置，其中，所述边缘控制发生模块和所述第二驱动变压器之间设置有第四开关管、第四二极管，所述第四开关管的栅极连接于边缘控制发生模块的第二输出端，所述第四二极管的阳极连接于所述第四开关管的漏极，所述第四二极管的阴极连接于第二原边绕组的同名端。
  11. 根据权利要求10所述的驱动装置，其中，所述边缘控制发生模块包括边缘控制发生芯片和第二驱动能力增强电路；
    所述边缘控制发生芯片用于输出所述第二边缘控制信号至所述第二驱动能力增强电路；
    所述第二驱动能力增强电路对所述第二边缘控制信号进行增强处理，并将处理后的所述第二边缘控制信号输出至所述第四开关管的栅极。
  12. 一种电子设备，包括如权利要求1至11任一所述的驱动装置。
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