WO2018003827A1 - 半導体装置 - Google Patents
半導体装置 Download PDFInfo
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- WO2018003827A1 WO2018003827A1 PCT/JP2017/023677 JP2017023677W WO2018003827A1 WO 2018003827 A1 WO2018003827 A1 WO 2018003827A1 JP 2017023677 W JP2017023677 W JP 2017023677W WO 2018003827 A1 WO2018003827 A1 WO 2018003827A1
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- insulating
- switching element
- unit
- driver
- signal
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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
- H02M7/00—Conversion of AC power input into DC power output; Conversion of DC power input into AC power output
- H02M7/003—Constructional details, e.g. physical layout, assembly, wiring or busbar connections
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F19/00—Fixed transformers or mutual inductances of the signal type
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/2804—Printed windings
-
- 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
- H02M7/00—Conversion of AC power input into DC power output; Conversion of DC power input into AC power output
- H02M7/42—Conversion of DC power input into AC power output without possibility of reversal
- H02M7/44—Conversion of DC power input into AC power output without possibility of reversal by static converters
- H02M7/48—Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
-
- 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
- H02M7/00—Conversion of AC power input into DC power output; Conversion of DC power input into AC power output
- H02M7/42—Conversion of DC power input into AC power output without possibility of reversal
- H02M7/44—Conversion of DC power input into AC power output without possibility of reversal by static converters
- H02M7/48—Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/53—Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/537—Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
- H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
- H02P27/06—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using DC to AC converters or inverters
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- 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
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/18—Printed circuits structurally associated with non-printed electric components
- H05K1/181—Printed circuits structurally associated with non-printed electric components associated with surface mounted components
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/2804—Printed windings
- H01F2027/2819—Planar transformers with printed windings, e.g. surrounded by two cores and to be mounted on printed circuit
-
- 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
- H02M3/003—Constructional details, e.g. physical layout, assembly, wiring or busbar connections
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W72/00—Interconnections or connectors in packages
- H10W72/071—Connecting or disconnecting
- H10W72/075—Connecting or disconnecting of bond wires
- H10W72/07541—Controlling the environment, e.g. atmosphere composition or temperature
- H10W72/07552—Controlling the environment, e.g. atmosphere composition or temperature changes in structures or sizes
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W72/00—Interconnections or connectors in packages
- H10W72/50—Bond wires
- H10W72/521—Structures or relative sizes of bond wires
- H10W72/527—Multiple bond wires having different sizes
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W72/00—Interconnections or connectors in packages
- H10W72/50—Bond wires
- H10W72/531—Shapes of wire connectors
- H10W72/5366—Shapes of wire connectors the bond wires having kinks
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W72/00—Interconnections or connectors in packages
- H10W72/50—Bond wires
- H10W72/541—Dispositions of bond wires
- H10W72/5445—Dispositions of bond wires being orthogonal to a side surface of the chip, e.g. parallel arrangements
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W90/00—Package configurations
- H10W90/701—Package configurations characterised by the relative positions of pads or connectors relative to package parts
- H10W90/751—Package configurations characterised by the relative positions of pads or connectors relative to package parts of bond wires
- H10W90/753—Package configurations characterised by the relative positions of pads or connectors relative to package parts of bond wires between laterally-adjacent chips
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W90/00—Package configurations
- H10W90/701—Package configurations characterised by the relative positions of pads or connectors relative to package parts
- H10W90/751—Package configurations characterised by the relative positions of pads or connectors relative to package parts of bond wires
- H10W90/756—Package configurations characterised by the relative positions of pads or connectors relative to package parts of bond wires between a chip and a stacked lead frame, conducting package substrate or heat sink
Definitions
- the present invention relates to a semiconductor device.
- inverters which are power conversion devices that convert DC power into AC power, have been used for driving motors and power supply devices (power conditioners, etc.) mounted on various devices.
- an inverter composed of a power device such as an IGBT (Insulated Gate Bipolar Transistor) or MOSFET (metal-oxide-semiconductor field-effect transistor) and a driver IC for driving the power device is housed in one package.
- IGBT Insulated Gate Bipolar Transistor
- MOSFET metal-oxide-semiconductor field-effect transistor
- driver IC driving the power device
- IPM Intelligent Power Module
- FIG. 9 is a diagram showing a schematic configuration of an example of a conventional inverter system configured by mounting an IPM on a printed circuit board.
- the inverter system 110 illustrated in FIG. 9 includes an MCU (Micro Control Unit) 101, photocouplers 102A to 102F, a photocoupler 103, an IPM 104, and a printed circuit board (PCB) 105.
- MCU Micro Control Unit
- PCB printed circuit board
- the MCU 101, the photocouplers 102A to 102F, the photocoupler 103, and the IPM 104 are mounted on the printed circuit board 105 using solder or the like.
- the MCU 101 transmits control signals Sci1 to Sci6 to each of the photocouplers 102A to 102F that have a relatively high speed response.
- the photocouplers 102A to 102F transmit the input control signals Sci6 to Sci6 as control signals Sco1 to Sco6 to the IPM 104 side while being electrically insulated from each other.
- the IPM 104 functions as a motor driver for driving a three-phase DC brushless motor (not shown), and has three bridge structures (not shown) each composed of an upper switching element and a lower switching element made of IGBT or the like. ing.
- the driver IC drives each upper switching element and each lower switching element based on the input control signals Sco1 to Sco6. Thereby, the IPC 104 operates as an inverter.
- the fault signal Fti is transmitted from the IPM 104 to the photocoupler 103 which has a relatively low speed response.
- the fault signal Fti is transmitted when an abnormality such as an overcurrent or an overheat state occurs.
- the photocoupler 103 transmits the input fault signal Fti as the fault signal Fto to the MCU 101 side while being electrically insulated. Thereby, the abnormal state can be notified to the MCU 101.
- the control signals and the photocouplers 102A to 102F and 103 are arranged between the MCU 101 on the low voltage side and the IPM 104 on the high voltage side. Signal insulation of the fault signal is achieved, and malfunction or failure of the MCU 101 is suppressed.
- such a configuration of the inverter system 110 leads to an increase in the size of the printed circuit board 105 due to an increase in the board mounting area for the following reasons, thereby hindering the downsizing of the system.
- the photocoupler needs to secure a creepage distance for the terminals for insulation, and the package size of the photocoupler increases. Further, it is necessary to mount photocouplers for the number of signals. In the example of the inverter system 110, seven photocouplers are required. Further, the photocoupler requires an external capacitor for power supply. Further, it is necessary to secure an insulation distance between the wiring patterns on the printed circuit board 105.
- Patent Document 1 discloses a configuration in which a printed circuit board is disposed on an IPM, and a photocoupler is mounted on the printed circuit board for signal insulation of a PWM signal. However, the same problem as described above occurs.
- an object of the present invention is to provide a semiconductor device capable of reducing the size of a system by reducing a substrate mounting area.
- a semiconductor device includes:
- a semiconductor device includes: A drive unit that drives the upper switching element and the lower switching element in response to a control signal for controlling driving of the upper switching element and the lower switching element that are connected in series to form a bridge circuit; An insulating part having an insulating transformer; A package for sealing at least a part of the insulating part and the driving part, The insulating unit is configured to transmit a signal corresponding to the control signal to the drive unit side while performing signal insulation (first configuration).
- the driving unit includes an upper driver unit that drives the upper switching element, and a lower driver unit that drives the lower switching element,
- the insulating part may be arranged at the same plane position sandwiched between the upper driver part and the lower driver part (second configuration).
- a transmission unit that generates a pulse signal based on the received control signal and outputs the pulse signal to the insulating unit may be further provided (third configuration).
- the driving unit transmits a detection signal corresponding to a driving state to the insulating unit
- the insulating unit may transmit the detection signal to the outside of the apparatus while performing signal insulation (fourth configuration).
- the drive unit may further include a transmission unit that generates a pulse signal based on the received detection signal and outputs the pulse signal to the insulating unit (fifth configuration).
- a receiving unit that generates a signal based on a pulse output from the insulating unit and transmits the signal to the outside of the apparatus may be further provided (sixth configuration).
- the insulating portion includes a surface of an insulating substrate having a semiconductor layer or a first coil formed in the insulating substrate, a first coil, and a dielectric. It is good also as having further the 2nd coil formed so that it may oppose on both sides (7th structure).
- the first coil and the second coil may be arranged so as to overlap in a plan view (eighth configuration).
- the insulating unit and the drive unit may each have a chip configuration (9th configuration).
- the upper switching element and the lower switching element use an IGBT or MOSFET using a Si substrate, a SiC substrate, or a wide band gap semiconductor substrate. It may be a conventional IGBT or MOSFET (tenth configuration).
- An inverter system includes a semiconductor device having any one of the first to tenth configurations, a control unit that transmits a control signal to the semiconductor device, the semiconductor device, and the control unit. Are mounted (the eleventh configuration).
- a device includes the above inverter system and a motor driven by the inverter system (a twelfth configuration).
- the power converter device which concerns on another aspect of this invention is A power converter that performs power conversion by driving an upper switching element and a lower switching element that are connected in series to form a bridge circuit, First and second drive circuit chips for driving the upper switching element and the lower switching element with a signal according to a control signal input from the outside; An insulating chip that insulates between the control signal and a signal for driving the first and second driving circuit chips using an insulating transformer; A substrate on which at least the insulating chip is mounted; A package for sealing at least a part of the substrate, the insulating chip, and the first and second driving circuit chips; The insulating chip is configured to be disposed in a region between the first and second drive circuit chips in a plan view (13th configuration).
- the insulating chip is opposed to the surface of the insulating substrate having a semiconductor layer or the first coil formed in the insulating substrate with the first coil interposed therebetween. And a second coil formed in the surface of the dielectric or in the dielectric (fourteenth configuration).
- the substrate may include a metal island connected to the lead terminal (fifteenth configuration).
- the substrate may include an insulating printed board (sixteenth configuration).
- the substrate may include a metal island connected to the lead terminal and an insulating printed board (a seventeenth configuration).
- the substrate may further include a transmission / reception chip that transmits and receives the control signal (eighteenth configuration).
- the first and second drive circuit chips may be mounted on a common island (19th configuration).
- the system can be reduced in size by reducing the board mounting area.
- FIG. 1 is a schematic plan view of an IPM (semiconductor package) according to an embodiment of the present invention. It is a schematic block diagram which shows the example of 1 structure of a motor drive system. It is a schematic block diagram which shows the example of 1 structure of a solar energy power generation system. It is an external view which shows an example of the vehicle carrying an electronic device. It is a figure which shows schematic structure of the inverter system which concerns on a prior art example.
- FIG. 1 is a diagram showing a schematic configuration of an inverter system according to an embodiment of the present invention.
- An inverter system 10 illustrated in FIG. 1 includes an MCU 1, an IPM 2, and a printed circuit board 3.
- the MCU 1 and the IPM 2 are mounted on the printed circuit board 3 using solder or the like.
- the IPM 2 functions as an inverter that drives a three-phase DC brushless motor (not shown) (a motor 15 described later).
- the MCU 1 transmits six control signals Sc to the IPM 2.
- the IPM 2 operates as an inverter based on the input control signal Sc. Further, the IPM 2 transmits a fault signal FO to the MCU when an abnormality occurs.
- the signal isolation between the control signal Sc and the fault signal FO is performed inside the IPM 2. This suppresses malfunction or failure of the MCU 1 on the low voltage side due to the IPM 2 on the high voltage side.
- FIG. 2 is a diagram specifically illustrating a circuit configuration of the IPM 2.
- the IPM 2 includes an inverter unit 20, a transmission / reception IC 23, an insulating unit 24, and bootstrap diodes Db1 to Db3. These components are housed in one package. Is done.
- the IPM 2 also includes external terminal portions T1 to T24 for establishing an electrical connection with the outside.
- the inverter unit 20 includes an upper driver IC 21, a lower driver IC 22, a first upper switching element HQ1, a second upper switching element HQ2, a third upper switching element HQ3, a first lower switching element LQ1, 2 lower switching element LQ2, third lower switching element LQ3, and diodes D1 to D6.
- the upper driver IC 21 and the lower driver IC 22 constitute a drive unit.
- First upper switching element HQ1, second upper switching element HQ2, third upper switching element HQ3, first lower switching element LQ1, second lower switching element LQ2, and third lower switching element LQ3 are each constituted by an IGBT using a Si (silicon) substrate.
- These switching elements are not limited to IGBTs, and may be constituted by MOSFETs using Si substrates, or by IGBTs or MOSFETs using semiconductor substrates called SiC substrates or wide band gap types. Also good.
- a power supply voltage P (for example, 600 V) which is a relatively high voltage is applied to the external terminal portion T1.
- the external terminal portion T1 is connected to the collector of the first upper switching element HQ1.
- the emitter of the first upper switching element HQ1 is connected to the collector of the first lower switching element LQ1.
- the emitter of the first lower switching element LQ1 is connected to one end of the resistor R1 via the external terminal portion T5.
- the first upper switching element HQ1 and the first lower switching element LQ1 are connected in series to form a first bridge.
- the external terminal portion T1 is connected to the collector of the second upper switching element HQ2.
- the emitter of the second upper switching element HQ2 is connected to the collector of the second lower switching element LQ2.
- the emitter of the second lower switching element LQ2 is connected to one end of the resistor R1 via the external terminal portion T6.
- the second upper switching element HQ2 and the second lower switching element LQ2 are connected in series to form a second bridge.
- the external terminal portion T1 is connected to the collector of the third upper switching element HQ3.
- the emitter of the third upper switching element HQ3 is connected to the collector of the third lower switching element LQ3.
- the emitter of the third lower switching element LQ3 is connected to one end of the resistor R1 via the external terminal portion T7.
- the third upper switching element HQ3 and the third lower switching element LQ3 are connected in series to form a third bridge.
- the other end of the resistor R1 is connected to the ground terminal.
- Diodes D1 to D6 are configured as flywheel diodes (FWD).
- the cathode of the diode D1 is connected to the collector of the first upper switching element HQ1.
- the anode of the diode D1 is connected to the emitter of the first upper switching element HQ1.
- the connection relationship between the diodes D2 to D6 and other switching elements is the same. That is, the diodes D1 to D6 and each switching element are connected in antiparallel.
- the emitter of the first upper switching element HQ1 is connected to the U-phase terminal of the motor 15, which is a three-phase DC brushless motor, via the external terminal portion T2.
- the emitter of the second upper switching element HQ2 is connected to the V-phase terminal of the motor 15 via the external terminal portion T3.
- the emitter of the third upper switching element HQ3 is connected to the W-phase terminal of the motor 15 via the external terminal portion T4.
- Capacitors Cb1 to Cb3 are for bootstrap.
- One end of the capacitor Cb1 is connected to the external terminal portion T2.
- the other end of the capacitor Cb1 is connected to the cathode of the diode Db1 via the external terminal portion T9.
- the anode of the diode Db1 is connected to the terminal of the upper driver IC 21.
- One end of the capacitor Cb2 is connected to the external terminal portion T3.
- the other end of the capacitor Cb2 is connected to the cathode of the diode Db2 via the external terminal portion T10.
- the anode of the diode Db2 is connected to the terminal of the upper driver IC 21.
- One end of the capacitor Cb3 is connected to the external terminal portion T4.
- the other end of the capacitor Cb3 is connected to the cathode of the diode Db3 via the external terminal portion T11.
- the anode of the diode Db3 is connected to the terminal of the upper driver IC 21
- a power supply voltage HVCC (for example, 15 V) is applied to the upper driver IC 21 from the outside via the external terminal portion T12.
- a ground potential is applied to the upper driver IC 21 from the outside via the external terminal portion T13.
- the upper driver IC 21 includes a first driver 21A for driving the first upper switching element HQ1, a second driver 21B for driving the second upper switching element HQ2, and a third driver for driving the third upper switching element HQ3. 21C.
- the upper driver IC 21 uses the power supply voltage HVCC to charge the capacitor Cb1 via the diode Db1, thereby generating a voltage VBU that is a higher voltage than the power supply voltage P at the external terminal portion T9. Then, the first driver 21A applies the voltage VBU to the gate of the first upper switching element HQ1, and turns on the first upper switching element HQ1.
- the upper driver IC 21 uses the power supply voltage HVCC to charge the capacitor Cb2 via the diode Db2, thereby generating a voltage VBV that is a higher voltage than the power supply voltage P at the external terminal portion T10. Then, the second driver 21B applies the voltage VBV to the gate of the second upper switching element HQ2, and turns on the second upper switching element HQ2.
- the upper driver IC 21 uses the power supply voltage HVCC to charge the capacitor Cb3 via the diode Db3, thereby generating a voltage VBW that is a higher voltage than the power supply voltage P at the external terminal portion T11. Then, the third driver 21C applies the voltage VBW to the gate of the third upper switching element HQ3, and turns on the third upper switching element HQ3.
- the first driver 21A, the second driver 21B, and the third driver 21C each short-circuit between the gate and emitter of the first upper switching element HQ1, the second upper switching element HQ2, and the third upper switching element HQ3, respectively.
- the switching element is turned off.
- the lower driver IC 22 includes a first driver 22A, a second driver 22B, and a third driver 22C.
- a power supply voltage LVCC (for example, 15 V) is applied to the lower driver IC 22 from the outside through the external terminal portion T22, and a ground potential is applied from the outside through the external terminal T24.
- the first driver 22A turns on the first lower switching element LQ1 by applying the power supply voltage LVCC to the gate of the first lower switching element LQ1.
- the second driver 22B turns on the second lower switching element LQ2 by applying the power supply voltage LVCC to the gate of the second lower switching element LQ2.
- the third driver 22C turns on the third lower switching element LQ3 by applying the power supply voltage LVCC to the gate of the third lower switching element LQ3.
- the first driver 22A, the second driver 22B, and the third driver 22C respectively short the gates of the first lower switching element LQ1, the second lower switching element LQ2, and the third lower switching element LQ3 to the ground potential. Thus, each switching element is turned off.
- the switching elements are driven on and off by the upper driver IC 21 and the lower driver IC 22, so that current is supplied to the motor 15 through the U-phase terminal, the V-phase terminal, and the W-phase terminal, and the rotor of the motor 15 is driven. Is driven to rotate.
- UVLO Under Voltage Lock Out unit 21D of the upper driver IC 21 monitors each voltage VBU, VBV, and VBW.
- the lower driver IC 22 further includes a comparator 22D, a UVLO unit 22E, and a TSD (Thermal Shut Down) unit 22F.
- a current detection signal CIN obtained by converting the current flowing through the resistor R1 into a voltage signal is applied to the non-inverting input terminal (+) of the comparator 22D via the external terminal portion T23.
- a predetermined reference voltage is applied to the inverting input terminal ( ⁇ ) of the comparator 22D.
- the comparator 22D outputs a high level detection signal.
- the lower switching elements are turned off by the first driver 22A to the third driver 22C.
- UVLO unit 22E monitors power supply voltage LVCC.
- the TSD unit 22F monitors the chip temperature of the lower driver IC 22, and outputs a detection signal to that effect when the chip temperature exceeds a predetermined temperature threshold (for example, 175 ° C.). At this time, the lower switching elements are turned off by the first driver 22A to the third driver 22C.
- a predetermined temperature threshold for example, 175 ° C.
- the six control signals Sc transmitted from the MCU 1 shown in FIG. 1 are composed of control signals HINU, HINV, HINW, LINU, LINV, and LINW as shown in FIG.
- the control signals HINU, HINV, and HINW respectively input to the external terminals T14 to T16 are received by the transmission / reception IC 23, transferred to the insulating unit 24, and transmitted to the upper driver IC 21 while being electrically insulated by the insulating unit 24.
- the first driver 21A drives the first upper switching element HQ1 on and off based on the control signal HINU.
- the second driver 21B drives the second upper switching element HQ2 on and off based on the control signal HINV.
- the third driver 21C drives the third upper switching element HQ3 on and off based on the control signal HINW.
- the control signals LINU, LINV, and LINW respectively input to the external terminals T17 to T19 are received by the transmission / reception IC 23 and transferred to the insulating unit 24, and are electrically insulated by the insulating unit 24 while being electrically insulated from the lower driver IC 22.
- the first driver 22A drives the first lower switching element LQ1 on and off based on the control signal LINU.
- the second driver 22B drives the second lower switching element LQ2 on and off based on the control signal LINV.
- the third driver 22C drives the third lower switching element LQ3 on and off based on the control signal LINW.
- a fault signal that is a logic level indicating an abnormal state is output to the insulating unit 24 by the lower driver IC 22.
- the fault signal is transmitted to the transmission / reception IC 23 while being electrically insulated by the insulating unit 24, and transmitted to the external MCU 1 (FIG. 1) via the external terminal T20 as the fault signal FO by the transmission / reception IC 23. Thereby, the abnormal state can be notified to the MCU 1.
- FIG. 3 is a diagram illustrating a specific circuit configuration of the transmission / reception IC 23 and the insulating unit 24.
- the transmission / reception IC 23 includes transmission units 23A to 23F that transmit signals to the isolation transformers Tr1 to Tr6, and a reception unit 23G that receives signals from the isolation transformer Tr7.
- the transmission / reception IC 23 also includes terminals T25 to T45. Control signals HINU, HINV, HINW, LINU, LINV, and LINW are input to terminals T25 to T30 via external terminal portions T14 to T19, respectively.
- the insulating unit 24 is an IC chip in which insulating transformers Tr1 to Tr7 are integrated on one chip.
- the insulating unit 24 also includes terminals T46 to T75.
- the upper driver IC 21 includes receiving units 211 to 213 that receive signals from the respective isolation transformers Tr1 to Tr3, in addition to the first driver 21A, the second driver 21B, and the third driver 21C.
- the upper driver IC 21 also has terminals T76 to T81.
- the lower driver IC 22 transmits signals to the receiving units 221 to 223 that receive signals from the insulating transformers Tr4 to Tr6 and the insulating transformer Tr7.
- a transmission unit 224 is provided.
- the lower driver IC 22 also has terminals T82 to T89.
- the transmission units 23A to 23F have the same configuration, and here, the configuration of the transmission unit 23A is specifically shown in FIG.
- the receiving units 211 to 213 and 221 to 223 have the same configuration, and here, the configuration of the receiving unit 211 is specifically shown in FIG.
- the transmission unit 23A includes an inverter 231, an inverter 232, a pulse generator 233, and a pulse generator 234.
- the input terminal of the inverter 231 is connected to the terminal T25.
- the output terminal of the inverter 231 is connected to the input terminal of the pulse generator 234 together with the input terminal of the inverter 232.
- the output terminal of the inverter 232 is connected to the input terminal of the pulse generator 233.
- the output end of the pulse generator 233 is connected to one end of the primary side winding of the isolation transformer Tr1 via terminals T32 and T46.
- the output end of the pulse generator 234 is connected to the other end of the primary winding of the isolation transformer Tr1 via terminals T33 and T47. A midpoint between both ends of the primary winding is connected to the ground potential via the terminal T60 and the external terminal portion T21.
- the receiving unit 211 includes an inverter 211A, an inverter 211B, and a flip-flop 211C.
- One end of the secondary winding of the transformer Tr1 is connected to the input end of the inverter 211A via a terminal T61 and a terminal T76.
- the other end of the secondary winding of the transformer Tr1 is connected to the input end of the inverter 211B via a terminal T62 and a terminal T77.
- a midpoint between both ends of the secondary winding is connected to the ground potential via the terminal T75 and the external terminal portion T8.
- the output terminal of the inverter 211A is connected to the set terminal S of the flip-flop 211C.
- the output terminal of the inverter 211B is connected to the reset terminal R of the flip-flop 211C.
- the output terminal Q of the flip-flop 211C is connected to the input terminal of the first driver 21A.
- FIG. 4 shows a laminated structure of the chip-shaped insulating transformer Tr1.
- the other insulating transformers Tr2 to Tr7 have the same configuration.
- a silicon (Si) substrate (an example of an insulating substrate having a semiconductor layer) is formed on the copper island.
- the silicon substrate has an insulating layer (silicon oxide film or the like) on the surface side.
- the silicon substrate may be another dielectric such as an insulating printed board.
- a copper coil as a primary winding or a secondary winding is formed on the surface of the silicon substrate or in the silicon substrate.
- a dielectric layer made of SiO2 or the like is laminated so as to cover the copper coil.
- a copper coil as a secondary winding or a primary winding is formed on the surface of the dielectric layer or in the dielectric layer.
- the other insulating transformers Tr2 to Tr7 are arranged on the silicon substrate so as to be aligned with the insulating transformer Tr1.
- Each insulating transformer formed into a chip is thin and can be formed to have a thickness similar to that of other ICs. Therefore, the thickness of the IPM 2 can be made thinner than the conventional one.
- the primary side winding or the secondary side winding may be formed using aluminum wiring. Further, the primary side winding and the secondary side winding may be formed so as to be arranged in the horizontal direction on the same plane, instead of being superposed in the vertical direction.
- control signal HINU which is a pulse signal input to the terminal T 25
- the control signal HINU is input to the inverter 231 and inverted, and is inverted again by the inverter 232 and input to the pulse generator 233. Further, the signal after being inverted by the inverter 231 is input to the pulse generator 234.
- the pulse generator 233 and the pulse generator 234 generate a pulse signal having a width narrower than that of the control signal HINU using the rising of the input signal as a trigger, and output the pulse signal to the primary side of the isolation transformer Tr1.
- a change in current due to the pulse signal supplied to the primary winding of the insulation transformer Tr1 generates a current in the secondary winding of the insulation transformer Tr1, which is supplied to the flip-flop 211C via the inverters 211A and 211B.
- the control signal HINU rises from the low level to the high level
- the signal input to the pulse generator 233 rises from the low level to the high level, so that the pulse generator 233 generates a pulse and 1 of the transformer Tr1. Output to the next side.
- the control signal HOU of the high level is output from the output terminal Q to the first driver 21A.
- control signal HINU which is a pulse signal
- the control signal HOU is transmitted to the upper driver IC 21.
- control signal HINV that is a pulse signal input to the terminal T26 is transmitted to the primary side of the transformer Tr2 via the transmission unit 23B, and is transmitted to the reception unit 212 while being electrically insulated by the transformer Tr2.
- control signal HOV is transmitted to the second driver 21B by the receiving unit 212.
- control signal HINW which is a pulse signal input to the terminal T27, is transmitted to the primary side of the transformer Tr3 via the transmitter 23C, and transmitted to the receiver 213 while being electrically insulated by the transformer Tr3.
- the reception unit 213 transmits the control signal HOW to the third driver 21C.
- control signal LINU which is a pulse signal input to the terminal T28
- the control signal LINV which is a pulse signal input to the terminal T29
- the reception unit 222 transmits the control signal LOV to the second driver 22B.
- control signal LINW which is a pulse signal input to the terminal T30, is transmitted to the primary side of the transformer Tr6 via the transmission unit 23F, and transmitted to the reception unit 223 while being electrically insulated by the transformer Tr6. Then, the reception unit 223 transmits the control signal LOW to the third driver 22C.
- the transmission unit 224 includes an inverter 224A, an inverter 224B, a pulse generator 224C, and a pulse generator 224D.
- the fault signal FIN is input to the input terminal of the inverter 224A.
- the output terminal of the inverter 224A is connected to the input terminal of the pulse generator 224D together with the input terminal of the inverter 224B.
- the output terminal of the inverter 224B is connected to the input terminal of the pulse generator 224C.
- the output end of the pulse generator 224C is connected to one end of the primary side winding of the insulating transformer Tr7 via the terminal T88 and the terminal T73.
- the output end of the pulse generator 224D is connected to the other end of the primary side winding of the insulating transformer Tr7 via a terminal T89 and a terminal T74.
- the receiving unit 23G includes an inverter 236, an inverter 237, and a flip-flop 235.
- One end of the secondary side winding of the transformer Tr7 is connected to the input end of the inverter 236 via terminals T58 and T44.
- the other end of the secondary winding of the transformer Tr7 is connected to the input end of the inverter 237 via terminals T59 and T45.
- the output terminal of the inverter 236 is connected to the set terminal S of the flip-flop 235.
- the output terminal of the inverter 237 is connected to the reset terminal R of the flip-flop 235.
- the output terminal Q of the flip-flop 235 is connected to the terminal T31.
- the terminal T31 is connected to the external terminal portion T20 (FIG. 2).
- the configuration including the transmission unit 224, the transformer Tr7, and the reception unit 23G is the same as the configuration including the transmission unit 23A, the transformer Tr1, and the reception unit 211 described above. Therefore, the fault signal FIN is transmitted to the primary side of the transformer Tr7 via the transmission unit 224, and is transmitted to the reception unit 23G while being electrically insulated by the transformer Tr7.
- the reception unit 23G receives the terminal T31 and the fault signal FO as the fault signal FO. It is transmitted to the MCU 1 (FIG. 1) via the external terminal unit T20.
- FIG. 5 is a plan view seen from the surface on which the IPM 2 (semiconductor package) is mounted.
- the sealing resin 200 is indicated by a two-dot chain line.
- the sealing resin 200 is formed so that the outer shape is substantially rectangular.
- the sealing resin 200 includes a sealing resin 200, a lead frame 300, an upper driver IC 21, a lower driver IC 22, a transmission / reception IC 23, an insulating unit 24, bootstrap diodes Db1 to Db3, Upper switching element HQ1, second upper switching element HQ2, third upper switching element HQ3, first lower switching element LQ1, second lower switching element LQ2, third lower switching element LQ3, diode D1 to D6 and wires W1 to W13 are provided.
- the insulating portion 24 and the drive portion are sealed by the sealing resin 200 (package), and at this time, at least a part of the silicon substrate (FIG. 4) is sealed.
- the lead frame 300 includes island portions 310 to 319, lead terminal pad portions 321 to 326, lead terminals 330 to 337, and suspension leads 340.
- the lead frame 300 is made of a metal such as Cu.
- the lead frame 300 is formed, for example, by subjecting a metal plate material to cutting and bending such as punching.
- the diode Db1 is placed on the island part 310 that is integral with the external terminal part T9.
- the anode side of the diode Db1 and the terminal of the upper driver IC 21, and the island portion 310 and the terminal of the upper driver IC 21 are connected by a wire W1, respectively.
- the wires W1 to W13 including the wire W1 are made of, for example, Au wires.
- the wires W1 to W13 may be made of, for example, Al or Cu wires, and a plurality of wires may be connected in parallel or may be a flat wire.
- the diode Db2 is placed on the island portion 311 that is integral with the external terminal portion T10.
- the anode side of the diode Db2 and the terminal of the upper driver IC 21 and the island portion 311 and the terminal of the upper driver IC 21 are connected by a wire W2.
- the diode Db3 is placed on the island portion 312 that is integral with the external terminal portion T11.
- the anode side of the diode Db3 and the terminal of the upper driver IC 21 and the island portion 312 and the terminal of the upper driver IC 21 are connected by a wire W3.
- the lead terminals 330 to 336 including the external terminal portions T14 to T20 are connected to the terminals T25 to T31 of the transmission / reception IC 23 by wires W4 (that is, a total of seven wires W4).
- the insulating portion 24 is disposed at a position sandwiched between the upper driver IC 21 and the lower driver IC 22.
- the terminals T32 to T45 included in the transmission / reception IC 23 are connected to the terminals T46 to T59 included in the insulating unit 24 by wires W5 (that is, a total of 14 wires W5).
- the terminals T61 to T66 included in the insulating unit 24 are connected to the terminals T76 to T81 included in the upper driver IC 21 by wires W6 (that is, a total of six wires W6).
- the terminals T67 to T74 included in the insulating unit 24 are connected to the terminals T82 to T89 included in the lower driver IC 22 by wires W7 (that is, a total of eight wires W7).
- the upper switching elements HQ1 to HQ3 and the diodes D1 to D3 are mounted on the island part 313 integrated with the external terminal part T1.
- the terminals of the upper driver IC 21 are connected to the gates and emitters of the upper switching elements HQ1 to HQ3 by wires W8.
- the emitters of the upper switching elements HQ1 to HQ3 are connected to the anodes of the diodes D1 to D3 by wires W9, respectively.
- the emitters of the diodes D1 to D3 are connected by wires W10 to pad portions 321 to 323 that are integral with the external terminal portions T2 to T4, respectively.
- the first lower switching element LQ1 and the diode D4 are placed on the island part 314 integrated with the pad part 321.
- the second lower switching element LQ2 and the diode D5 are placed on the island part 315 integrated with the pad part 322.
- the third lower switching element LQ3 and the diode D6 are placed on the island part 316 integrated with the pad part 323.
- the terminals of the lower driver IC 22 are connected to the gates of the lower switching elements LQ1 to LQ3 by wires W11.
- the emitters of the lower switching elements LQ1 to LQ3 are connected to the anodes of the diodes D4 to D6 by wires W12, respectively.
- the emitters of the diodes D4 to D6 are connected by wires W13 to pad portions 324 to 326 that are integral with the external terminal portions T5 to T7, respectively.
- the island part 317 on which the transmission / reception IC 23 and the insulating part 24 are placed is integrated with the lead terminal 336.
- the island part 319 on which the lower driver IC 22 is placed and the island part 318 on which the upper driver IC 21 is placed are connected and integrated.
- the island part 319 is integrated with the lead terminal 337.
- the lead terminal 337 includes an external terminal T24.
- the island part 318 is integrated with the suspension lead 340.
- the lead frame including the external terminal portion T21 is not shown.
- This lead frame is a ground terminal on the low voltage side, and the lead frame (not shown) is arranged in the X direction as the same set as each lead frame including the external terminal portions T14 to T20 on the low voltage side.
- the interval between the lead frames adjacent to each other in the X direction in the set of the lead frames including the external terminal portions T9 to T11 that generate the relatively high voltage is the set of the external terminal portions T14 to T21.
- the distance between the lead frames adjacent to each other in the X direction in the (second set) is larger.
- the interval between the first set and the second set is made wider than the intervals between the lead frames adjacent in the X direction in the second set.
- a groove 210 formed in the sealing resin 200 and recessed in the Y direction is formed between the lead frames adjacent to each other in the X direction in the first group and between the first group and the second group. Is placed.
- a groove 220 that is recessed in the X direction is formed at a substantially central portion of each side of the sealing resin 200 that faces the X direction.
- the groove part 220 is used for conveyance and attachment of IPM2, for example.
- Each lead frame including the external terminal portions T1 to T7 where a relatively high voltage is generated is opposed to one side of the sealing resin 200 in which the lead frames of the first group and the second group are disposed in the Y direction. Are arranged in the X direction on one side.
- the external terminal portion T8 is not shown in FIG. 5, the lead frame including the external terminal portion T8 is arranged in the same set as each lead frame including the external terminal portions T1 to T7.
- the lead terminal 337 which is a high-voltage side ground terminal, is spaced apart from the second set at a wider interval than the intervals between the lead frames adjacent in the X direction in the second set.
- the IPM 2 of the present embodiment by providing the insulating part 24 in the IPM 2 (semiconductor device) with a smaller area and thinner than that using a plurality of the transmission / reception ICs 23 and the photocouplers, the control signal can be generated inside the IPM 2. And signal isolation of the fault signal.
- the size of the IPM 2 is slightly increased by providing the transmission / reception IC 23 and the insulating portion 24, the effect of reducing the mounting area by removing the photocoupler is great.
- the area can be greatly reduced. Therefore, the size of the printed circuit board 3 can be reduced, and the inverter system 10 can be reduced in size.
- the insulating portion 24 can be formed small, even if the insulating portion 24 is arranged at a position sandwiched between the upper driver IC 21 and the lower driver IC 22, the ICs are arranged in the long side of the IPM2. As a result, the lengths of both the wires W6 and W7 connecting the insulating portion 24 and the upper driver IC 21 or the lower driver IC 22 can be shortened as much as possible. Therefore, the length of the wire can be shortened as much as possible, the possibility that the wires are short-circuited at the time of resin sealing can be reduced, and manufacturing can be performed at low cost.
- a low-voltage terminal and a high-voltage terminal are generally separated from each other in a semiconductor package used in the IPM2, and therefore, a creepage distance of a terminal that must be considered in a photocoupler package There is no need to consider.
- the internal insulation is performed by the sealing resin used for the IPM2 package. In this case, since the dielectric constant of the resin is lower than that of air, it is possible to save space. If the photocoupler is resin-sealed in the IPM2 package, there is no problem with insulation, but the problem of the thickness of the photocoupler and the problem that the area occupied by the photocoupler does not decrease remain.
- FIG. 6 is a schematic block diagram showing an example of a motor drive system in FA (factory automation).
- a motor drive system 60 shown in FIG. 6 is a system for driving the motor 61.
- the motor 61 is mounted on, for example, an industrial robot.
- the motor drive system 60 includes a driver unit 60A, a power supply unit 60B, a controller unit 60C, a detection unit 60D, and an interface unit 60E.
- the driver unit 60A includes a power element, a gate driver, and the like, and is a part that substantially drives the motor 61.
- the power supply unit 60B includes an AC / DC converter, a DC / DC converter, and the like, and supplies the generated power to the driver unit 60A and the like.
- the controller unit 60C includes an MCU and the like, and controls the driver unit 60A, the power supply unit 60B, and the like.
- the detection unit 60 ⁇ / b> D is a sensor that detects the rotational position and rotational speed of the motor 61.
- the interface unit 60E is configured with a serial communication interface, Bluetooth (registered trademark), or the like. The IPM according to the present invention can be applied to the driver unit 60A.
- FIG. 7 is a schematic block diagram illustrating an example of a solar power generation system.
- a photovoltaic power generation system 70 shown in FIG. 7 includes a solar cell array 70A, a step-up DC / DC converter 70B, an inverter 70C, a bidirectional DC / DC converter 70D, a storage battery 70E, a distribution board 70F, and a communication block 70G. .
- the solar cell array 70A is configured by connecting a plurality of solar cell modules, and receives direct sunlight to generate DC power.
- Boost DC / DC converter 70B boosts the DC voltage from solar cell array 70A to generate a predetermined DC voltage.
- Inverter 70C converts the DC power from step-up DC / DC converter 70B into AC power and outputs it to distribution board 70F.
- Distribution board 70 ⁇ / b> F supplies necessary power out of the power from inverter 70 ⁇ / b> C to a load (such as an electric device in the home) and outputs surplus power to a commercial system. It is also possible to supply the power supplied from the commercial system to the load via the distribution board 70F.
- the bidirectional DC / DC converter 70D converts the direct current power from the step-up DC / DC converter 70B into a predetermined direct current power and stores it in the storage battery 70E.
- the bidirectional DC / DC converter 70D performs DC / DC conversion on the electric power discharged from the storage battery 70E, and also supplies it to the load via the inverter 70C and the distribution board 70F.
- Communication block 70G communicates with inverter 70C, bidirectional DC / DC converter 70D, storage battery 70E, and the like.
- the IPM according to the present invention can be applied to the inverter 70C, the step-up DC / DC converter 70B, and the like.
- FIG. 8 is an external view showing a configuration example of a vehicle on which various electronic devices are mounted.
- the vehicle X of this configuration example includes a battery X10 and various electronic devices X11 to X18 that operate by receiving supply of input voltage from the battery X10. Note that the mounting positions of the battery X10 and the electronic devices X11 to X18 in FIG. 8 may differ from actual ones for convenience of illustration.
- the electronic device X11 is an engine control unit that performs control related to the engine (injection control, electronic throttle control, idling control, oxygen sensor heater control, auto cruise control, etc.).
- the electronic device X12 is a lamp control unit that controls turning on and off such as HID [high intensity discharged lamp] and DRL [daytime running lamp].
- the electronic device X13 is a transmission control unit that performs control related to the transmission.
- the electronic device X14 is a body control unit that performs control (ABS [anti-lock brake system] control, EPS [electric power steering] control, electronic suspension control, etc.) related to the movement of the vehicle X.
- control ABS [anti-lock brake system] control, EPS [electric power steering] control, electronic suspension control, etc.
- the electronic device X15 is a security control unit that performs drive control such as door locks and security alarms.
- the electronic device X16 is an electronic device that is incorporated in the vehicle X at the factory shipment stage as a standard equipment item or manufacturer's option product such as a wiper, an electric door mirror, a power window, a damper (shock absorber), an electric sunroof, and an electric seat. It is.
- the electronic device X17 is an electronic device that is optionally mounted on the vehicle X as a user option product, such as an in-vehicle A / V [audio / visual] device, a car navigation system, and an ETC [electronic toll collection system].
- a user option product such as an in-vehicle A / V [audio / visual] device, a car navigation system, and an ETC [electronic toll collection system].
- the electronic device X18 is an electronic device equipped with a high-voltage motor such as an in-vehicle blower, an oil pump, a water pump, or a battery cooling fan.
- a high-voltage motor such as an in-vehicle blower, an oil pump, a water pump, or a battery cooling fan.
- the inverter system including the IPM according to the present invention can be incorporated into any of the electronic devices X11 to X18 that use a motor or include a power supply device.
- the configuration of the present invention can be variously modified in addition to the above-described embodiment without departing from the gist of the invention. That is, the above-described embodiment is an example in all respects and should not be considered as limiting, and the technical scope of the present invention is not the description of the above-described embodiment, but the claims. It should be understood that all modifications that come within the meaning and range of equivalents of the claims are included.
- the island portion 317 may be separated from the lead terminal 336, and the island portions 318 and 319 may be separated.
- an insulating printed board may be used as the island part 317, or a transmission / reception IC, an insulating part, an upper driver IC, and a lower driver IC may be mounted on the printed board.
- the present invention can be used for inverter systems such as motor drive for industrial equipment and power conversion of power supply devices.
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Abstract
Description
上記目的を達成するために本発明の一態様に係る半導体装置は、
直列接続されてブリッジ回路を構成する上側スイッチング素子および下側スイッチング素子の駆動を制御するための制御信号に応じて前記上側スイッチング素子と前記下側スイッチング素子を駆動する駆動部と、
絶縁トランスを有する絶縁部と、
前記絶縁部と前記駆動部の少なくとも一部を封止するパッケージと、を備え、
前記絶縁部は、前記制御信号に応じた信号を信号絶縁しつつ前記駆動部側へ伝達する構成としている(第1の構成)。
前記絶縁部は、前記上側ドライバ部と前記下側ドライバ部とで挟まれる同一平面位置に配置されることとしてもよい(第2の構成)。
前記絶縁部は、前記検出信号を信号絶縁しつつ装置の外部側へ伝達することとしてもよい(第4の構成)。
直列接続されてブリッジ回路を構成する上側スイッチング素子および下側スイッチング素子を駆動して電力変換を行う電力変換装置であって、
前記上側スイッチング素子と前記下側スイッチング素子を外部から入力される制御信号に応じた信号で駆動する第1および第2の駆動回路チップと、
前記制御信号と第1および第2の駆動回路チップを駆動するための信号との間を絶縁トランスを用いて絶縁する絶縁チップと、
少なくとも前記絶縁チップを搭載する基板と、
前記基板と前記絶縁チップと第1および第2の駆動回路チップの少なくとも一部を封止するパッケージと、を備え、
前記絶縁チップは、平面視で、第1および第2の駆動回路チップの間の領域に配置されている構成としている(第13の構成)。
図1は、本発明の一実施形態に係るインバータシステムの概略構成を示す図である。図1に示すインバータシステム10は、MCU1と、IPM2と、プリント基板3と、を備えている。MCU1と、IPM2は、プリント基板3に半田などを用いて実装される。
次に、本発明の一実施形態に係るIPM2(半導体パッケージ)の構成について図2を用いて詳述する。図2は、IPM2の回路構成を具体的に示す図である。
図1で示したMCU1から送信される6本の制御信号Scは、具体的には図2に示すよう制御信号HINU、HINV、HINW、LINU、LINV、およびLINWから構成される。外部端子T14~T16に各々入力された制御信号HINU、HINVおよびHINWは、送受信IC23により受信されて絶縁部24へ受け渡され、絶縁部24により電気的に絶縁されつつ上側ドライバIC21へ伝達される。第1ドライバ21Aは、制御信号HINUに基づいて第1上側スイッチング素子HQ1をオンオフ駆動する。第2ドライバ21Bは、制御信号HINVに基づいて第2上側スイッチング素子HQ2をオンオフ駆動する。第3ドライバ21Cは、制御信号HINWに基づいて第3上側スイッチング素子HQ3をオンオフ駆動する。
次に、本実施形態に係るIPM2の半導体パッケージとしての構成について図5を用いて詳述する。図5は、IPM2(半導体パッケージ)の実装される側の面から視た平面図である。なお、図5では、便宜上、封止樹脂200を二点鎖線で示している。封止樹脂200は、外形が略矩形状として形成される。
本実施形態のIPM2によれば、送受信IC23とフォトカプラを複数用いたものよりも小面積で薄型に形成できる絶縁部24をIPM2(半導体装置)の内部に設けることで、IPM2の内部で制御信号およびフォールト信号の信号絶縁を図っている。これにより、送受信IC23と絶縁部24を設けることによってIPM2のサイズが若干増大したとしても、フォトカプラを削除することによる実装面積削減効果が大きいので、全体として図1に示すようなプリント基板における実装面積を大幅に削減できる。従って、プリント基板3のサイズを小型化でき、インバータシステム10の小型化につなげることができる。また、IPM2のパッケージ構成において、絶縁部24を小さく形成できるので、絶縁部24を上側ドライバIC21と下側ドライバIC22とで挟まれる位置に配置しても、IPM2の長辺内に各ICを並べて配置できるようになり、絶縁部24と上側ドライバIC21、または下側ドライバIC22とをそれぞれ接続するワイヤW6、W7の両方の長さをなるべく短くすることができる。従って、ワイヤの長さをなるべく短くすることができ、樹脂封止時にワイヤ同士が短絡する虞を低減できるとともに、安価に製造が可能となる。
ここで、本発明に係るIPMの適用先の一例として産業機器への適用について説明する。図6は、FA(ファクトリーオートメーション)におけるモータ駆動システムの一例を示す概略ブロック構成図である。図6に示すモータ駆動システム60は、モータ61を駆動するためのシステムである。モータ61は、例えば産業ロボットに搭載されるものである。モータ駆動システム60は、ドライバ部60A、電源部60B、コントローラ部60C、検知部60D、およびインタフェース部60Eを備えている。
ここでは、本発明に係るIPMの適用先の別の一例として、太陽光発電システムについて述べる。図7は、太陽光発電システムの一例を示す概略ブロック構成図である。図7に示す太陽光発電システム70は、太陽電池アレイ70A、昇圧DC/DCコンバータ70B、インバータ70C、双方向DC/DCコンバータ70D、蓄電池70E、分電盤70F、および通信ブロック70Gを備えている。
ここで、本実施形態に係るIPMの適用先の一例として車両への適用について説明する。図8は、各種の電子機器を搭載した車両の一構成例を示す外観図である。本構成例の車両Xは、バッテリX10と、バッテリX10から入力電圧の供給を受けて動作する種々の電子機器X11~X18と、を搭載している。なお、図8におけるバッテリX10および電子機器X11~X18の搭載位置については、図示の便宜上、実際とは異なる場合がある。
なお、本発明の構成は、上記実施形態のほか、発明の主旨を逸脱しない範囲で種々の変更を加えることが可能である。すなわち、上記実施形態は、全ての点で例示であって、制限的なものではないと考えられるべきであり、本発明の技術的範囲は、上記実施形態の説明ではなく、特許請求の範囲によって示されるものであり、特許請求の範囲と均等の意味および範囲内に属する全ての変更が含まれると理解されるべきである。例えば、アイランド部317はリード端子336と別体であっても良く、アイランド部318と319も別体であっても良い。更に、アイランド部317として絶縁性のプリント基板を用いたり、プリント基板の上に送受信IC、絶縁部、上側ドライバIC、下側ドライバICを搭載するようにしても構わない。
2 IPM
3 プリント基板
10 インバータシステム
15 モータ
21 上側ドライバIC
22 下側ドライバIC
23 送受信IC
24 絶縁部
200 封止樹脂
210、220 溝部
300 リードフレーム
310~319 アイランド部
321~326 パッド部
330~337 リード端子
340 吊りリード
W1~W13 ワイヤ
HQ1 第1上側スイッチング素子
HQ2 第2上側スイッチング素子
HQ3 第3上側スイッチング素子
LQ1 第1下側スイッチング素子
LQ2 第2下側スイッチング素子
LQ3 第3下側スイッチング素子
D1~D6 ダイオード
Db1~Db3 ダイオード
Cb1~Cb3 コンデンサ
R1 抵抗
T1~T24 外部端子部
T25~T75 端子
Tr1~Tr7 絶縁トランス
23A~23F 送信部
23G 受信部
211~213、221~223 受信部
224 送信部
60 モータ駆動システム
60A ドライバ部
60B 電源部
60C コントローラ部
60D 検知部
60E インタフェース部
61 モータ
70 太陽光発電システム
70A 太陽電池アレイ
70B 昇圧DC/DCコンバータ
70C インバータ
70D 双方向DC/DCコンバータ
70E 蓄電池
70F 分電盤
70G 通信ブロック
X 車両
X10 バッテリ
X11~X18 電子機器
Claims (19)
- 直列接続されてブリッジ回路を構成する上側スイッチング素子および下側スイッチング素子の駆動を制御するための制御信号に応じて前記上側スイッチング素子と前記下側スイッチング素子を駆動する駆動部と、
絶縁トランスを有する絶縁部と、
前記絶縁部と前記駆動部の少なくとも一部を封止するパッケージと、を備え、
前記絶縁部は、前記制御信号に応じた信号を信号絶縁しつつ前記駆動部側へ伝達することを特徴とする半導体装置。 - 前記駆動部は、前記上側スイッチング素子を駆動する上側ドライバ部と、前記下側スイッチング素子を駆動する下側ドライバ部と、を含み、
前記絶縁部は、前記上側ドライバ部と前記下側ドライバ部とで挟まれる同一平面位置に配置されることを特徴とする請求項1に記載の半導体装置。 - 受信した前記制御信号に基づいてパルス信号を生成して前記絶縁部に出力する送信部を更に備えることを特徴とする請求項1または請求項2に記載の半導体装置。
- 前記駆動部は、駆動状態に応じた検出信号を前記絶縁部に送信し、
前記絶縁部は、前記検出信号を信号絶縁しつつ装置の外部側へ伝達することを特徴とする請求項1~請求項3のいずれか1項に記載の半導体装置。 - 前記駆動部は、受信した前記検出信号に基づいてパルス信号を生成して前記絶縁部に出力する送信部を更に有することを特徴とする請求項4に記載の半導体装置。
- 前記絶縁部からのパルス出力に基づいた信号を生成して装置の外部へ送信する受信部を更に備えることを特徴とする請求項4または請求項5に半導体装置。
- 前記絶縁部は、半導体層を有する絶縁基板の表面または前記絶縁基板中に形成された第1のコイルと、第1のコイルと誘電体を挟んで対向するように形成された第2のコイルと、を更に有することを特徴とする請求項1~請求項6のいずれか1項に記載の半導体装置。
- 第1のコイルと第2のコイルとは、平面視で重なるように配置されていることを特徴とする請求項7に記載の半導体装置。
- 前記絶縁部、前記駆動部は、それぞれチップ構成であることを特徴とする請求項1~請求項8のいずれか1項に記載の半導体装置。
- 前記上側スイッチング素子および前記下側スイッチング素子は、Si基板を用いたIGBTまたはMOSFET、または、SiC基板またはワイドバンドギャップ型の半導体基板を用いたIGBTまたはMOSFETであることを特徴とする請求項1~請求項9のいずれか1項に記載の半導体装置。
- 請求項1~請求項10のいずれか1項に記載の半導体装置と、前記半導体装置に制御信号を送信する制御部と、前記半導体装置と前記制御部が実装される基板と、を備えることを特徴とするインバータシステム。
- 請求項11に記載のインバータシステムと、前記インバータシステムによって駆動されるモータと、を備えることを特徴とする機器。
- 直列接続されてブリッジ回路を構成する上側スイッチング素子および下側スイッチング素子を駆動して電力変換を行う電力変換装置であって、前記上側スイッチング素子と前記下側スイッチング素子を外部から入力される制御信号に応じた信号で駆動する第1および第2の駆動回路チップと、
前記制御信号と第1および第2の駆動回路チップを駆動するための信号との間を絶縁トランスを用いて絶縁する絶縁チップと、
少なくとも前記絶縁チップを搭載する基板と、
前記基板と前記絶縁チップと第1および第2の駆動回路チップの少なくとも一部を封止するパッケージと、を備え、
前記絶縁チップは、平面視で、第1および第2の駆動回路チップの間の領域に配置されていることを特徴とする電力変換装置。 - 前記絶縁チップは、半導体層を有する絶縁基板の表面または前記絶縁基板中に形成された第1のコイルと、第1のコイルと誘電体を挟んで対向するように前記誘電体の表面または前記誘電体中に形成された第2のコイルと、を有することを特徴とする請求項13に記載の電力変換装置。
- 前記基板は、リード端子に繋がる金属製のアイランドを含むことを特徴とする請求項13または請求項14に記載の電力変換装置。
- 前記基板は、絶縁性のプリント基板を含むことを特徴とする請求項13または請求項14に記載の電力変換装置。
- 前記基板は、リード端子に繋がる金属製のアイランドと絶縁性のプリント基板とを含むことを特徴とする請求項13または請求項14に記載の電力変換装置。
- 前記基板は、前記制御信号を送受信する送受信チップを更に搭載することを特徴とする請求項13~請求項17のいずれか1項に記載の電力変換装置。
- 第1および第2の駆動回路チップは、共通のアイランド上に搭載されることを特徴とする請求項13~請求項18のいずれか1項に記載の電力変換装置。
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| CN201780040559.9A CN109463036B (zh) | 2016-07-01 | 2017-06-28 | 半导体器件 |
| US16/307,398 US10833595B2 (en) | 2016-07-01 | 2017-06-28 | Semiconductor device with upper and lower switching devices and isolation transformer |
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| WO2020095738A1 (ja) * | 2018-11-08 | 2020-05-14 | ローム株式会社 | 電力変換装置 |
| DE202020005603U1 (de) | 2019-12-27 | 2021-10-08 | Rohm Co., Ltd. | Halbleitervorrichtung |
| DE112020006357T5 (de) | 2019-12-27 | 2022-10-27 | Rohm Co. Ltd. | Halbleitervorrichtung |
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| US11750112B2 (en) | 2020-06-29 | 2023-09-05 | Daikin Industries, Ltd. | Inverter device including a bootstrap circuit |
| WO2022004602A1 (ja) | 2020-06-29 | 2022-01-06 | ダイキン工業株式会社 | インバータ装置 |
| WO2023008344A1 (ja) * | 2021-07-29 | 2023-02-02 | ローム株式会社 | パワー半導体モジュール、半導体装置 |
| JP2023105499A (ja) * | 2022-01-19 | 2023-07-31 | 三菱電機株式会社 | 半導体装置 |
| US12500185B2 (en) | 2022-01-19 | 2025-12-16 | Mitsubishi Electric Corporation | Semiconductor device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2020065078A (ja) | 2020-04-23 |
| CN109463036B (zh) | 2020-10-23 |
| JP6646744B2 (ja) | 2020-02-14 |
| JP7121834B2 (ja) | 2022-08-18 |
| EP3460979A1 (en) | 2019-03-27 |
| EP3460979A4 (en) | 2020-01-22 |
| US20210028716A1 (en) | 2021-01-28 |
| US20190305689A1 (en) | 2019-10-03 |
| US10833595B2 (en) | 2020-11-10 |
| JP6905607B2 (ja) | 2021-07-21 |
| EP3460979B1 (en) | 2025-06-04 |
| JPWO2018003827A1 (ja) | 2019-03-28 |
| JP2021166300A (ja) | 2021-10-14 |
| CN109463036A (zh) | 2019-03-12 |
| US11329572B2 (en) | 2022-05-10 |
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