WO2006056363A1 - Convertisseur continu-continu a plusieurs sorties - Google Patents
Convertisseur continu-continu a plusieurs sorties Download PDFInfo
- Publication number
- WO2006056363A1 WO2006056363A1 PCT/EP2005/012348 EP2005012348W WO2006056363A1 WO 2006056363 A1 WO2006056363 A1 WO 2006056363A1 EP 2005012348 W EP2005012348 W EP 2005012348W WO 2006056363 A1 WO2006056363 A1 WO 2006056363A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- converter
- stage
- voltage
- stages
- output
- 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
Links
Classifications
-
- 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
- H02M3/33561—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 having more than one ouput with independent control
-
- 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
- H02M3/02—Conversion of DC power input into DC power output without intermediate conversion into AC
- H02M3/04—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters
- H02M3/10—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of DC power input into DC power output without intermediate conversion into AC 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
- H02M3/155—Conversion of DC power input into DC power output without intermediate conversion into AC 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
- H02M3/156—Conversion of DC power input into DC power output without intermediate conversion into AC 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 with automatic control of output voltage or current, e.g. switching regulators
- H02M3/158—Conversion of DC power input into DC power output without intermediate conversion into AC 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 with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
- H02M3/1584—Conversion of DC power input into DC power output without intermediate conversion into AC 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 with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load with a plurality of power processing stages connected in parallel
-
- 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
- H02M1/0083—Converters characterised by their input or output configuration
- H02M1/009—Converters characterised by their input or output configuration having two or more independently controlled outputs
Definitions
- the present invention relates to a DC-DC converter with multiple outputs.
- WO-02/03534 discloses a DC-DC converter having a plurality of output voltages.
- the device described in this document uses the same inductance for all the output stages.
- Each of these stages comprises a switching switch and a complex control circuit is provided to control each of these switches at a frequency or a duty cycle, which is specific to it.
- the device described in the latter document is of a high cost, due in particular to the presence of individually controlled switches. In addition, given the many switching frequencies used, this device has a delicate radiation to eliminate.
- the present invention therefore aims to provide a DC-DC converter with several outputs, simpler, and therefore easier to achieve than the devices of the prior art.
- a converter has electromagnetic radiation easy to eliminate.
- the invention proposes a multistage DC / DC converter from a primary voltage source comprising inductive means for storing electrical energy, first primary voltage hashing means, switching means. associated with each stage of the converter as well as control means for the hashing means and the switching means.
- the reference voltage of each stage of the converter corresponds to the output voltage of the lower stage, the first stage having a first reference voltage, for example a ground, and the switching means associated with the stages of the converter are controlled simultaneously and at the same frequency.
- the first primary voltage hashing means comprise a switch which is in the closed position when the switching means associated with the stages of the converter are in the open position and vice versa.
- the converter then has operation in two phases: a first charging phase of the inductive means and a second discharge phase of these inductive means.
- a preferred embodiment of a converter according to the invention provides that the latter comprises a first stage and secondary stages, that each stage comprises an inductor, and that the inductance of the first stage is directly connected to the primary voltage source. by the hash means.
- the switching means associated with a secondary stage are for example arranged between the output of the inductance of the lower stage and the input of the inductance of the stage.
- each floor secondary circuit has decoupling means in parallel with the inductance of the corresponding stage so as to decouple this secondary stage from the reference voltage of the first stage.
- these decoupling means of a secondary stage comprise a decoupling capacitor or else a diode.
- a DC-DC converter according to the invention it also comprises for example also a linear regulator at the output of each of the stages.
- the present invention also relates to a voltage supply device of an electronic device and / or an electronic system, characterized in that they comprise a DC-DC converter as described above.
- FIG. 1 is a block diagram showing a three-stage converter according to the invention
- FIG. 2 is a circuit diagram of a DC-DC converter according to the invention with two stages in a first switching state;
- FIG. 3 represents the converter of FIG. 2 in a second switching state
- FIG. 4 is a circuit diagram of a DC-DC converter according to the invention with three stages, and
- FIG. 5 is an electrical diagram of an alternative embodiment of the converter of FIG. 4.
- FIG. 1 schematically represents a DC-DC converter having an input voltage Uin and providing three output voltages Vouti, Vout2 and Vout3. Each of these outputs supplies a linear voltage regulator, respectively VR1, VR2 and VR3.
- This CDC converter comprises three conversion stages E1, E2 and E3, hashing and switching means SW and a control circuit RG including controlling the hashing and switching means SW.
- the first stage E1, or primary stage is connected to ground. Its output voltage Vouti is defined with respect to this mass.
- the other conversion stages E2, E3 have as their reference voltage the output voltage of the lower stage.
- the conversion stage E2 has the reference voltage Vouti while the conversion stage E3 has the reference voltage Vout2.
- the servo-control circuit RG regulates the switching of the hashing and switching means SW as a function of the output voltage Vouti of the primary stage E1.
- the CDC converter of Figure 1 has three stages.
- a converter according to the invention may, however, comprise a number of different stages. It may comprise two stages (as shown in FIGS. 2 and 3) or a larger number of stages (four or more).
- FIGS. 2 and 3 show a primary stage and a secondary stage.
- the primary stage comprises an inductor L1, a capacitor C1, a resistor R1 and a switch S2.
- the capacitor C1 is mounted between the ground and a terminal, called the output terminal, of the inductor L1.
- Resistor R1 is connected in parallel across C1.
- the switch S2 is mounted between the other terminal of the inductor L1, or the input terminal of the inductor L1, and the ground.
- the secondary stage comprises an inductor L2, a capacitor C2, a resistor R2, a switch S2a and a decoupling capacitor C2a.
- the decoupling capacitance C2a is connected in series with the inductor L2.
- the inductance terminal L2 on the side of the decoupling capacitor C2a is called the input terminal of the inductor L2.
- the other terminal of the inductor L2 is called the output terminal of the inductor L2.
- the decoupling capacitance C2a is mounted between the input terminals of the inductors L1 and L2.
- the switch S2a is mounted between the output terminal of the inductor L1 and the input terminal of the inductor L2.
- the capacitor C2 is mounted between the output terminals of the inductors L1 and L2 while the resistor R2 is connected between the output terminal of the inductor L2 and the ground.
- the output voltage Vouti corresponds to the voltage at the output terminal of the inductor L1
- the output voltage Vout2 of the secondary stage corresponds to the voltage of the output terminal of the inductor L2 of the secondary floor.
- the input terminal of the inductance L1 of the primary stage is fed via a switch S1 to the voltage source Uin.
- the switch S1 thus makes it possible to chop the voltage of the source Uin.
- FIG. 2 shows this converter during a first phase called charging phase.
- the switch S1 is closed while the switches S2 and S2a are open.
- the current from the source Uin loads the inductance L1. It also charges, through the decoupling capacitance C2a, inductance L2.
- Figure 3 shows the converter of Figure 2 in a second phase called discharge phase.
- the switches S1, S2 and S2a switch simultaneously to move from their positions shown in Figure 2 to the positions of Figure 3.
- the switch S1 is then in the open position while the switches S2 and S2a are in the closed position.
- the inductance L1 then supplies current first to the capacitor C1 but also, via the switch S2a which is in the closed position, to the secondary stage. In this second stage of the current is thus provided by the inductance L2, and also by L1, to the capacitor C2.
- the switching frequency is adapted to the voltage Vouti that one wishes to obtain.
- the voltage Vout2 is then substantially twice the voltage Vouti.
- two DC voltages Vouti and Vout2 are obtained without the use of a transformer.
- the switches used are, for example, MOSTEC switches (also known by the English name "MOSFET switch”).
- Figure 4 shows how it is possible to obtain a third output voltage Vout3.
- the references of Figures 2 and 3 are repeated to designate similar elements.
- FIG. 4 there is the primary stage and the secondary stage of Figures 2 and 3.
- a second secondary stage, or third stage, with an output voltage Vout3 is realized.
- the structure of this third stage is the replica of the structure of the second stage with respect to the primary stage.
- a decoupling capacitor C3a mounted in series with an inductor L3 having an input terminal, located on the capacitance side of decoupling 1 C3a and an output terminal.
- the decoupling capacitor C3a is mounted between the input terminals of the inductor L1 and the inductor L3.
- a switch S3a mounted between the output terminal of the inductor L2 and the input terminal of the inductor L3.
- a capacitor C3 is mounted for its part between the output terminals of the inductance L3 and the inductance L2 of the lower stage. Finally a resistor R3 is mounted between the ground and the output terminal of the inductor L3. The output voltage Vout3 corresponds to the voltage of the output terminal of the inductance L3.
- the desired supply voltages are not necessarily multiples of a base voltage.
- the invention also makes it possible to obtain a voltage Vout2 different from 2 * Vout1.
- the decoupling capacitor C2a can be replaced by another electronic component.
- the decoupling capacitors Cna make it possible to decouple each secondary stage from the mass when the switch S2 of the primary stage is closed.
- This decoupling function can be obtained using, for example, a diode or a transistor.
- the embodiment of FIG. 5 thus shows a diagram in which the decoupling capacitors Cna have been replaced by diodes Dn (D2 and D3). In such an arrangement, the diodes induce a voltage drop and an output voltage Vout2 of less than 2 * Vout1 is then obtained. Similarly, the output voltage Vout3 is less than 3 * Vout1. It is thus clearly apparent that the output voltages of the various stages of a converter according to the invention can be adapted.
- the converters described above make it possible to have multiple staged output voltages and to use linear voltage regulators having a small voltage drop between their input and their output (drop of voltage also called “dropout"). Thus, little heat is dissipated while still enjoying a precise diet and quality. Note in particular the absence of a significant residual ripple such as that obtained with conventional switching power supplies.
- the invention also makes it possible to obtain a cheap converter. It should be noted that only one servocontrol circuit is necessary whereas in the multi-stage devices of the prior art a servo circuit per stage is provided.
- the use of a single servo circuit also has another advantage. Since only one switching frequency is used, the electromagnetic radiation of the circuit is limited. This radiation is thus easy to filter which has a certain advantage for the device power supply such as a radio receiver.
- the structure of the converters described makes it possible to avoid voltage crossovers. Indeed Voutn always remains lower than Vout (n + 1). Thus, even during the start and stop phases, the ratio between the different output voltages is maintained.
- a converter according to the invention may have the desired output number (two, three, four or more) without requiring very significant extra cost.
- the stability of the output voltages of the secondary stages depends on the regulation of the output voltage of the primary stage.
- the components of the secondary stages also affect the stability of the output voltages of the secondary stages. It is then possible to use a system, such as for example a divider, for the outputs of the secondary stages.
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
Abstract
Description
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE112005000731T DE112005000731T5 (de) | 2004-11-23 | 2005-11-18 | Gleichstrom-Gleichstrom-Wandler mit mehreren Ausgängen |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0412403 | 2004-11-23 | ||
| FR0412403A FR2878382B1 (fr) | 2004-11-23 | 2004-11-23 | Convertisseur continu-continu a plusieurs sorties |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2006056363A1 true WO2006056363A1 (fr) | 2006-06-01 |
Family
ID=34951276
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2005/012348 Ceased WO2006056363A1 (fr) | 2004-11-23 | 2005-11-18 | Convertisseur continu-continu a plusieurs sorties |
Country Status (3)
| Country | Link |
|---|---|
| DE (1) | DE112005000731T5 (fr) |
| FR (1) | FR2878382B1 (fr) |
| WO (1) | WO2006056363A1 (fr) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2934439B1 (fr) * | 2008-07-25 | 2010-08-27 | Continental Automotive France | Dispositif convertisseur continu-continu |
| DE102009052461A1 (de) * | 2009-11-09 | 2011-05-26 | Sma Solar Technology Ag | Wechselrichter-Schaltungsanordnung |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5886508A (en) * | 1997-08-29 | 1999-03-23 | Computer Products, Inc. | Multiple output voltages from a cascaded buck converter topology |
| US6522113B1 (en) * | 2001-12-06 | 2003-02-18 | Texas Instruments Incorporated | Synchronous coupled inductor switching regulator with improved output regulation |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3316251A1 (de) * | 1983-05-04 | 1984-11-08 | Robert Bosch Gmbh, 7000 Stuttgart | Schaltungsanordnung zur gleichspannungswandlung |
| JP2003088101A (ja) * | 2001-07-04 | 2003-03-20 | Fuji Electric Co Ltd | 自動車搭載用dc−dcコンバータ |
-
2004
- 2004-11-23 FR FR0412403A patent/FR2878382B1/fr not_active Expired - Fee Related
-
2005
- 2005-11-18 WO PCT/EP2005/012348 patent/WO2006056363A1/fr not_active Ceased
- 2005-11-18 DE DE112005000731T patent/DE112005000731T5/de not_active Ceased
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5886508A (en) * | 1997-08-29 | 1999-03-23 | Computer Products, Inc. | Multiple output voltages from a cascaded buck converter topology |
| US6522113B1 (en) * | 2001-12-06 | 2003-02-18 | Texas Instruments Incorporated | Synchronous coupled inductor switching regulator with improved output regulation |
Non-Patent Citations (1)
| Title |
|---|
| BETTEN J: "ADD AN AUXILIARY VOLTAGE TO A BUCK REGULATOR", EDN ELECTRICAL DESIGN NEWS, CAHNERS PUBLISHING CO. NEWTON, MASSACHUSETTS, US, vol. 47, no. 24, 31 October 2002 (2002-10-31), pages 108, XP001143015, ISSN: 0012-7515 * |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2878382A1 (fr) | 2006-05-26 |
| DE112005000731T5 (de) | 2008-04-03 |
| FR2878382B1 (fr) | 2008-03-21 |
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