CN113630001A - Bootstrap-driven double-circuit positive-negative pressure independently adjustable power supply circuit - Google Patents
Bootstrap-driven double-circuit positive-negative pressure independently adjustable power supply circuit Download PDFInfo
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- CN113630001A CN113630001A CN202110909548.8A CN202110909548A CN113630001A CN 113630001 A CN113630001 A CN 113630001A CN 202110909548 A CN202110909548 A CN 202110909548A CN 113630001 A CN113630001 A CN 113630001A
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- 239000003990 capacitor Substances 0.000 claims abstract description 48
- 229910002601 GaN Inorganic materials 0.000 description 7
- JMASRVWKEDWRBT-UHFFFAOYSA-N Gallium nitride Chemical compound [Ga]#N JMASRVWKEDWRBT-UHFFFAOYSA-N 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 230000010355 oscillation Effects 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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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
- 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
-
- 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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
Abstract
A bootstrap drive double-circuit positive and negative voltage independently adjustable power supply circuit comprises a positive output DC-DC converter consisting of a first MOS tube Q1, a first inductor L1, a first capacitor C1, a third MOS tube Q3, a second inductor L2 and a second capacitor C2, and a negative output DC-DC converter consisting of a second MOS tube Q2, a third inductor L3, a third diode D3 and a third capacitor C3.
Description
Technical Field
The invention relates to the field of electronic circuits, in particular to a bootstrap drive double-circuit positive and negative voltage independent adjustable power supply circuit.
Background
Along with the large-scale popularization of informatization and the rapid development of electronic equipment, the performance requirement of a power supply is higher and higher, the requirements on power density and conversion efficiency are higher and higher, but voltage and frequency fluctuate in the conversion of electric energy, so that the conversion efficiency is unsatisfactory, along with the higher and higher frequency requirements of products, the conventional technology cannot meet the performance requirements by utilizing Schottky diodes and IGBTs to carry out electric energy conversion, gallium nitride devices have good chemical stability, high temperature resistance and good heat dissipation and are suitable for working under high power, the research and application of gallium nitride materials are hot spots in the current semiconductor field, the frequency and power characteristics of the gallium nitride materials are far superior to those of silicon, silicon carbide and other all semiconductor devices, the gallium nitride chips have small volume and high integration level, the conversion efficiency can be greatly improved, and the gallium nitride materials are applied to various fields in the power electronic technology, such as switching power supplies, Inverters, rectifiers, inverters, and the like. Therefore, the gallium nitride switching device will become the mainstream switching device for replacing the MOS tube in the future. However, the GaN chip needs to provide working voltages with different amplitudes and phases, which puts high power supply requirements on the driving chip, and the driving circuit directly affects the performance of the switching device. Therefore, it is desirable to provide a power circuit capable of providing a bootstrap function and realizing two-way positive and negative voltage output.
Disclosure of Invention
In order to solve the technical problem, the invention provides a bootstrap drive double-circuit positive and negative voltage independent adjustable power supply circuit.
The invention is realized by the following technical scheme.
The invention provides a bootstrap drive double-circuit positive-negative pressure independent adjustable power supply circuit, which comprises a positive pressure output end Vout+And a negative pressure output end Vout-A first MOS transistor Q1, a first inductor L1, a first capacitor C1, a third MOS transistor Q3, a second inductor L2, a second capacitor C2, a second MOS transistor Q2, a third inductor L3, a third diode D3, a third capacitor C3, a first driving unit U1, and a second driving unit U2;
the first MOS tube Q1, the first inductor L1, the first capacitor C1, the third MOS tube Q3, the second inductor L2 and the second capacitor C2 form a positive-polarity output DC-DC converter, and the first MOS tube Q1The G pole of the first driving unit U1 is connected with the driving end of the first driving unit U1, the D pole of the first driving unit U1 is connected with the power supply VCC end, and the S pole of the first driving unit U1 is connected with the GND end of the first driving unit U1; one end of the first inductor L1 is connected to the S-pole of the first MOS transistor Q1, and the other end is grounded; one end of the first capacitor C1 is connected to the S-pole of the first MOS transistor Q1, and the other end is connected to the D-pole of the third MOS transistor Q3; the G pole of the third MOS tube Q3 is vacant, and the S pole is grounded; the VCC end of the first driving unit U1 is connected to a power supply VCC; one end of the second inductor L2 is connected to the D pole of the third MOS transistor Q3, and the other end is connected to the positive voltage output terminal Vout+(ii) a One end of the second capacitor C2 is grounded, and the other end is connected to the positive voltage output end Vout+；
The second MOS tube Q2, the third inductor L3, the third diode D3 and the third capacitor C3 form a negative polarity output DC-DC converter, the G pole of the second MOS tube is connected with the driving end of the second driving unit U2, the S pole of the second MOS tube is connected to the GND end of the second driving unit U2, and the D pole of the second MOS tube is connected to the VCC end; the VCC end of the second driving unit U2 is connected to the VCC end of the power supply; one end of the third inductor is connected with the S pole of the second MOS tube, and the other end of the third inductor is grounded; the positive and negative voltage output terminals V of the third diode D3out-The negative electrode of the second MOS tube Q2 is connected with the S pole of the second MOS tube Q2; one end of the third capacitor C3 and the negative voltage output end Vout-And the other end is grounded.
Further, the driving circuit further comprises a first diode D1 and a second diode D2, wherein the anode of the first diode D1 is connected to the power source VCC, and the cathode of the first diode D1 is connected to the VCC terminal of the first driving unit U1; the anode of the second diode D2 is connected to the power source VCC, and the cathode is connected to the VCC terminal of the second driving unit U2.
Further, the driving circuit further comprises a first resistor R1, wherein one end of the first resistor R1 is connected to the cathode of the first diode, and the other end is connected to the VCC terminal of the first driving unit U1.
Furthermore, the driving circuit further comprises a second resistor R2, wherein one end of the second resistor R2 is connected to the cathode of the second diode, and the other end of the second resistor R2 is connected to the VCC terminal of the second driving unit U2.
Further, the driving circuit further comprises a fourth capacitor C4, wherein one end of the fourth capacitor C4 is connected to the GND terminal of the first driving unit U1, and the other end is connected to the VCC terminal of the first driving unit U1.
Further, the driving circuit further comprises a fifth capacitor C5, wherein one end of the fifth capacitor C5 is connected to the GND terminal of the second driving unit U2, and the other end is connected to the VCC terminal of the second driving unit U2.
Furthermore, the circuit also comprises a second resistor R2, wherein one end of the second resistor R2 is connected with the G pole of the first MOS transistor Q1, and the other end is connected with the S pole of the first MOS transistor Q1.
Furthermore, the circuit also comprises a fifth resistor R5, wherein one end of the fifth resistor R5 is connected with the G pole of the second MOS transistor Q2, and the other end is connected with the S pole of the second MOS transistor Q2.
Furthermore, the driving circuit further comprises a third resistor R3, wherein one end of the third resistor R3 is connected with the driving end of the first driving unit U1, and the other end is connected with the G pole of the first MOS transistor Q1.
Furthermore, the driving circuit further comprises a sixth resistor R6, wherein one end of the sixth resistor R6 is connected with the driving end of the second driving unit U2, and the other end is connected with the G pole of the second MOS transistor Q2.
The invention has the beneficial effects that: the bootstrap drive double-circuit positive and negative voltage independently adjustable power supply circuit provided by the invention can provide positive and negative voltage power supply for the drive chip, the stability and reliability of the drive circuit are ensured due to the low ripple wave and high conversion efficiency of the bootstrap drive double-circuit positive and negative voltage independently adjustable, the application is flexible, and the bootstrap drive double-circuit positive and negative voltage independently adjustable power supply circuit can be used for an operational amplifier, an LED display and the like which use double power supplies for power supply.
Drawings
Fig. 1 is a schematic diagram of the circuit connection structure of the present invention.
Detailed Description
The technical solution of the present invention is further described below, but the scope of the claimed invention is not limited to the described.
As shown in fig. 1, a first MOS transistor Q1, a first inductor L1, a first capacitor C1, a third MOS transistor Q3, a second inductor L2 and a second capacitor C2 form a positive polarity output DC-DC converter, a G pole of the first MOS transistor Q1 is connected to a driving terminal of a first driving unit U1, a D pole is connected to a power VCC terminal, and an S pole is connected to a GND terminal of the first driving unit U1; one end of the first inductor L1 is connected to the S-pole of the first MOS transistor Q1, and the other end is grounded; first capacitorOne end of the C1 is connected to the S pole of the first MOS transistor Q1, and the other end is connected to the D pole of the third MOS transistor Q3; the G pole of the third MOS tube Q3 is vacant, and the S pole is grounded; the VCC end of the first driving unit U1 is connected to a power supply VCC; one end of the second inductor L2 is connected to the D pole of the third MOS transistor Q3, and the other end is connected to the positive voltage output terminal Vout+(ii) a One end of the second inductor L2 is grounded, and the other end is connected to the positive voltage output end Vout+(ii) a The second MOS tube Q2, the third inductor L3, the third diode D3 and the third capacitor C3 form a negative polarity output DC-DC converter, the G pole of the second MOS tube Q2 is connected with the driving end of the second driving unit U2, the S pole is connected to the GND end of the second driving unit U2, and the D pole is connected to the power supply VCC end; the VCC end of the second driving unit U2 is connected to the VCC end of the power supply; one end of the third inductor C3 is connected with the S pole of the second MOS transistor Q2, and the other end is grounded; the positive and negative voltage output terminals V of the third diode D3out-The negative electrode of the second MOS tube Q2 is connected with the S pole of the second MOS tube Q2; one end of the third capacitor C3 and the negative voltage output end Vout-And the other end is grounded.
The anode of the first diode D1 is connected with a power supply VCC, and the cathode of the first diode D1 is connected with the VCC end of the first driving unit U1; the anode of the second diode D2 is connected to the power source VCC, and the cathode is connected to the VCC terminal of the second driving unit U2. One end of the first resistor R1 is connected to the cathode of the first diode, and the other end is connected to the VCC terminal of the first driving unit U1. One end of the second resistor R2 is connected to the cathode of the second diode, and the other end is connected to the VCC terminal of the second driving unit U2. One end of the fourth capacitor C4 is connected to the GND terminal of the first driving unit U1, and the other end is connected to the VCC terminal of the first driving unit U1. One end of the fifth capacitor C5 is connected to the GND terminal of the second driving unit U2, and the other end is connected to the VCC terminal of the second driving unit U2. One end of the second resistor R2 is connected to the G-pole of the first MOS transistor Q1, and the other end is connected to the S-pole of the first MOS transistor Q1. One end of the fifth resistor R5 is connected to the G-pole of the second MOS transistor Q2, and the other end is connected to the S-pole of the second MOS transistor Q2. One end of the third resistor R3 is connected to the driving end of the first driving unit U1, and the other end is connected to the G-pole of the first MOS transistor Q1. One end of the sixth resistor R6 is connected to the driving end of the second driving unit U2, and the other end is connected to the G-pole of the second MOS transistor Q2.
(1) Realization of double-output power supply circuit
The first MOS transistor Q1, the first inductor L1, the first capacitor C1, the third MOS transistor Q3, the second inductor L2 and the second capacitor C2 form a positive polarity output DC-DC converter, and when the first MOS transistor Q1 is turned on and the third MOS transistor Q3 is turned off, the power source VCC stores energy to the first inductor L1 through the first MOS transistor Q1. When the first MOS transistor Q1 is turned off and the third MOS transistor Q3 is turned on, the first inductor L1 forms an oscillation circuit with the first capacitor C1 through the third MOS transistor Q3, the stored energy is transferred to the second capacitor C2 until the current of the oscillation circuit crosses zero, after the energy on the first inductor L1 is completely transferred to the second capacitor C2, the third MOS transistor Q3 is turned off, the second capacitor C2 supplies power to the load R through the second inductor L2, and the output voltage is positive.
The second MOS transistor Q2, the third inductor L3, the third diode D3, and the third capacitor C3 constitute a negative polarity output DC-DC converter, and when the second MOSQ2 is turned on, the power source VCC stores energy to the third inductor L3 through the first MOS transistor Q1. When the second MOS transistor Q2 is turned off, the third diode D3 is turned on, and at this time, the third inductor L3 supplies power to the load through the third diode D3 and the third capacitor C3, but since the current of the third inductor L3 flows from the bus terminal to the ground in the energy storage phase, the path of the bleed current is from the third inductor L3 to the third capacitor C3 to the third diode D3, and the output voltage is negative.
(2) Implementation of independently adjustable functions
The circuit has the advantages that the double-circuit power supply is independently adjustable, and the duty ratios of the positive polarity output end and the negative polarity output end can be respectively adjusted according to application requirements, so that the power supply circuit of the driving chip with different voltage grades is formed.
The positive polarity output circuit output voltage satisfies the relation:
Uo＝D*Ui/(1-D)
in the above formula, D represents the duty ratio between the output voltage and the input voltage, taking 0.5 as a boundary, and is used for reducing voltage when D is less than 0.5 and boosting voltage when D is higher than 0.5; u shapeoOutputting a voltage for the positive polarity output circuit; u shapeiThe input voltage for the positive polarity output circuit.
The negative polarity output and input voltages satisfy the relation:
Vo＝(-Vi)*D/(1-D)D
in the above formula, D represents the duty ratio between the output voltage and the input voltage, taking 0.5 as a boundary, and is used for reducing voltage when D is less than 0.5 and boosting voltage when D is higher than 0.5; voA negative polarity output voltage; viIs a negative polarity input voltage.
(3) Realization of double-path bootstrap drive function
In the circuit, a first MOS tube Q1 and a second MOS tube Q2 are connected in series on a bus, floating ground driving is needed during driving, if an isolation type driving chip is used for driving, an isolation power supply needs to be additionally added, circuit complexity is increased, the bootstrap driving circuit of the circuit is simple in structure, floating ground driving can be achieved only by few devices, taking the first MOS tube Q1 as an example, the floating driving circuit is composed of a first diode D1, a first resistor R1, a second resistor R2, a third resistor R3, a fourth capacitor C4 and a first driving unit U1, when VCC has voltage input, the fourth capacitor C4 is charged through the first diode D1 and the first resistor R1, the other end of the fourth capacitor C4 is connected to the right side of the first MOS tube Q1 and the end of the first driving unit U1, and then the power supply voltage of the floating driving circuit is the ground voltage relative to the floating ground voltage VCC of the bus instead of the floating ground driving circuit, so that floating ground driving is achieved relative to GND, the circuit is simplified. The structure principle of the second MOS transistor Q2 of the negative output DC-DC converter is the same, and is not described herein again.
Claims (10)
1. A bootstrap drive double-circuit positive negative pressure independent adjustable power supply circuit which characterized in that: comprises a positive pressure output end Vout+And a negative pressure output end Vout-A first MOS transistor Q1, a first inductor L1, a first capacitor C1, a third MOS transistor Q3, a second inductor L2, a second capacitor C2, a second MOS transistor Q2, a third inductor L3, a third diode D3, a third capacitor C3, a first driving unit U1, and a second driving unit U2;
the first MOS transistor Q1, the first inductor L1, the first capacitor C1, the third MOS transistor Q3, the second inductor L2 and the second capacitor C2 form a positive-polarity output DC-DC converter, a G pole of the first MOS transistor Q1 is connected with a driving end of the first driving unit U1, a D pole of the first MOS transistor Q1 is connected with a power supply VCC end, and an S pole of the first MOS transistor Q1 is connected with the first driving unitThe GND end of the U1 is connected; one end of the first inductor L1 is connected to the S-pole of the first MOS transistor Q1, and the other end is grounded; one end of the first capacitor C1 is connected to the S-pole of the first MOS transistor Q1, and the other end is connected to the D-pole of the third MOS transistor Q3; the G pole of the third MOS tube Q3 is vacant, and the S pole is grounded; the VCC end of the first driving unit U1 is connected to a power supply VCC; one end of the second inductor L2 is connected to the D pole of the third MOS transistor Q3, and the other end is connected to the positive voltage output terminal Vout+(ii) a One end of the second capacitor C2 is grounded, and the other end is connected to the positive voltage output end Vout+；
The second MOS tube Q2, the third inductor L3, the third diode D3 and the third capacitor C3 form a negative polarity output DC-DC converter, the G pole of the second MOS tube is connected with the driving end of the second driving unit U2, the S pole of the second MOS tube is connected to the GND end of the second driving unit U2, and the D pole of the second MOS tube is connected to the VCC end; the VCC end of the second driving unit U2 is connected to the VCC end of the power supply; one end of the third inductor L3 is connected with the S pole of the second MOS transistor Q2, and the other end is grounded; the positive and negative voltage output terminals V of the third diode D3out-The negative electrode of the second MOS tube Q2 is connected with the S pole of the second MOS tube Q2; one end of the third capacitor C3 and the negative voltage output end Vout-And the other end is grounded.
2. The bootstrap-drive two-way positive-negative voltage independently adjustable power supply circuit of claim 1, characterized in that: the driving circuit further comprises a first diode D1 and a second diode D2, wherein the anode of the first diode D1 is connected with a power supply VCC, and the cathode of the first diode D1 is connected with a VCC end of the first driving unit U1; the anode of the second diode D2 is connected to the power source VCC, and the cathode is connected to the VCC terminal of the second driving unit U2.
3. The bootstrap-drive two-way positive-negative voltage independently adjustable power supply circuit of claim 2, characterized in that: the driving circuit further comprises a first resistor R1, wherein one end of the first resistor R1 is connected with the cathode of the first diode, and the other end of the first resistor R1 is connected to the VCC end of the first driving unit U1.
4. The bootstrap-drive two-way positive-negative voltage independently adjustable power supply circuit of claim 2, characterized in that: and the driving circuit further comprises a second resistor R2, wherein one end of the second resistor R2 is connected with the cathode of the second diode, and the other end of the second resistor R2 is connected to the VCC end of the second driving unit U2.
5. The bootstrap-drive two-way positive-negative voltage independently adjustable power supply circuit of claim 1, characterized in that: and the driving circuit further comprises a fourth capacitor C4, wherein one end of the fourth capacitor C4 is connected with the GND terminal of the first driving unit U1, and the other end of the fourth capacitor C4 is connected with the VCC terminal of the first driving unit U1.
6. The bootstrap-drive two-way positive-negative voltage independently adjustable power supply circuit of claim 1, characterized in that: and the third capacitor C5, wherein one end of the fifth capacitor C5 is connected with the GND terminal of the second driving unit U2, and the other end is connected with the VCC terminal of the second driving unit U2.
7. The bootstrap-drive two-way positive-negative voltage independently adjustable power supply circuit of claim 1, characterized in that: the circuit further comprises a second resistor R2, wherein one end of the second resistor R2 is connected with the G pole of the first MOS transistor Q1, and the other end of the second resistor R2 is connected with the S pole of the first MOS transistor Q1.
8. The bootstrap-drive two-way positive-negative voltage independently adjustable power supply circuit of claim 1, characterized in that: the circuit further comprises a fifth resistor R5, wherein one end of the fifth resistor R5 is connected with the G pole of the second MOS transistor Q2, and the other end of the fifth resistor R5 is connected with the S pole of the second MOS transistor Q2.
9. The bootstrap-drive two-way positive-negative voltage independently adjustable power supply circuit of claim 1, characterized in that: the driving circuit further comprises a third resistor R3, wherein one end of the third resistor R3 is connected with the driving end of the first driving unit U1, and the other end of the third resistor R3 is connected with the G pole of the first MOS transistor Q1.
10. The bootstrap-drive two-way positive-negative voltage independently adjustable power supply circuit of claim 1, characterized in that: the driving circuit further comprises a sixth resistor R6, wherein one end of the sixth resistor R6 is connected with the driving end of the second driving unit U2, and the other end of the sixth resistor R6 is connected with the G pole of the second MOS transistor Q2.
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| CN202110909548.8A CN113630001B (en) | 2021-08-09 | 2021-08-09 | Bootstrap driving double-path positive and negative pressure independent adjustable power supply circuit |
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| CN202110909548.8A CN113630001B (en) | 2021-08-09 | 2021-08-09 | Bootstrap driving double-path positive and negative pressure independent adjustable power supply circuit |
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| CN113630001A true CN113630001A (en) | 2021-11-09 |
| CN113630001B CN113630001B (en) | 2024-06-14 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN207304400U (en) * | 2017-10-25 | 2018-05-01 | 深圳市联讯发科技有限公司 | A kind of driving power |
| CN108923626A (en) * | 2018-08-15 | 2018-11-30 | 东北大学 | A kind of negative pressure Bootstrapping drive circuit of three level T-type common source current transformer |
| CN109217647A (en) * | 2018-11-16 | 2019-01-15 | 中国电子科技集团公司第四十三研究所 | A kind of driving circuit and its driving method of positive-negative power power supply half-bridge circuit |
| CN111865078A (en) * | 2020-07-10 | 2020-10-30 | 西安交通大学 | A single input symmetrical bipolar dual output DC-DC converter |
| CN215601199U (en) * | 2021-08-09 | 2022-01-21 | 贵州航天林泉电机有限公司 | Bootstrap-driven double-circuit positive-negative pressure independently adjustable power supply circuit |
-
2021
- 2021-08-09 CN CN202110909548.8A patent/CN113630001B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN207304400U (en) * | 2017-10-25 | 2018-05-01 | 深圳市联讯发科技有限公司 | A kind of driving power |
| CN108923626A (en) * | 2018-08-15 | 2018-11-30 | 东北大学 | A kind of negative pressure Bootstrapping drive circuit of three level T-type common source current transformer |
| CN109217647A (en) * | 2018-11-16 | 2019-01-15 | 中国电子科技集团公司第四十三研究所 | A kind of driving circuit and its driving method of positive-negative power power supply half-bridge circuit |
| CN111865078A (en) * | 2020-07-10 | 2020-10-30 | 西安交通大学 | A single input symmetrical bipolar dual output DC-DC converter |
| CN215601199U (en) * | 2021-08-09 | 2022-01-21 | 贵州航天林泉电机有限公司 | Bootstrap-driven double-circuit positive-negative pressure independently adjustable power supply circuit |
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