CN204794706U - Novel move synchronous Rectifier DCDC converter of looks full -bridge - Google Patents
Novel move synchronous Rectifier DCDC converter of looks full -bridge Download PDFInfo
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- CN204794706U CN204794706U CN201520518846.4U CN201520518846U CN204794706U CN 204794706 U CN204794706 U CN 204794706U CN 201520518846 U CN201520518846 U CN 201520518846U CN 204794706 U CN204794706 U CN 204794706U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
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Abstract
The utility model relates to a novel move synchronous Rectifier DCDC converter of looks full -bridge is including moving looks full -bridge PWM controller, a time schedule controller, a isolating driver ware, the 2nd time schedule controller, the 2nd isolating driver ware, MOS pipe A, MOS pipe B, MOS pipe C, MOS pipe D, MOS pipe SR1, MOS pipe SR2, transformer T1, the utility model is used for switch tube and vice limit synchronous Rectifier switch tube for moving looks full -bridge circuit provide drive signal. Move looks full -bridge circuit on drive leading arm and hysteresis arm in four MOS pipes, drive circuit sues for peace two MOS pipes drive on the full -bridge diagonal angle, wide pulse width drive signal that the production pulse width is greater than 50% for what control back level synchronous Rectifier managed switches on and turn -offs. Guarantee that rectification MOS pipe is in the super low -impedance stage of switching on all the time, has reduced the loss that switches on of circuit, has improved conversion efficiency at the in -process of former limit power conversion to vice limit.
Description
Technical field
The utility model relates to a kind of synchronous rectification DC/DC converter, particularly relates to a kind of synchronous rectification DC/DC converter of new type phase shifting full bridge.
Background technology
The development trend of modern radar integrated power supply module is that supply power voltage is more and more lower, and volume is more and more less, and power grade improves constantly, and power density is doubled and redoubled.What bring is the problem reducing the wastage and dispel the heat thereupon, and especially in the field that low-voltage, high-current exports, efficiency is highlighted as vital index.
Phase-shifted full-bridge converter, as prime isolation DC/DC converter, utilizes the principle of resonance to make the switching tube on brachium pontis enter Sofe Switch state, reduces the switching loss of switching tube, improves the conversion efficiency of prime isolation DC/DC converter.Meanwhile, in order to improve the conversion efficiency of rear class rectification circuit, must reduce rectifier loss, adopting the MOSFET of low on-resistance to carry out synchronous rectification, be a kind of effective way improving transducer effciency.
Therefore for inside contract in the space that antenna arrays of radar is limited small power supply volume, reduce its weight, need the conversion efficiency constantly promoting front power supply, carry out the research that phase-shifting full-bridge adds synchronous rectification scheme front power supply.
Utility model content
Technical problem to be solved: provide a kind of when without the need to increasing special timing controller for above problem the utility model, carries out the circuit of synchronous rectification of the new type phase shifting full bridge of drived control simultaneously to full-bridge metal-oxide-semiconductor and devices.Simplify peripheral circuit, improve phase-shifting full-bridge and add the application prospect of synchronous rectification scheme under various different application occasion.
Technical scheme: the synchronous rectification DC/DC converter providing a kind of new type phase shifting full bridge in order to overcome the above problems the utility model, it is characterized in that: comprise phase-shifting full-bridge PWM controller, the first time schedule controller, the first driver for isolating, the second time schedule controller, the second driver for isolating, metal-oxide-semiconductor A, metal-oxide-semiconductor B, metal-oxide-semiconductor C, metal-oxide-semiconductor D, metal-oxide-semiconductor SR1, metal-oxide-semiconductor SR2, transformer T1
The drain electrode of metal-oxide-semiconductor A connects Vin, and grid connects phase-shifting full-bridge PWM controller and the first time schedule controller, and source electrode connects " 1 " pin of n1 coil in the drain electrode of metal-oxide-semiconductor B and transformer T1;
The grid of metal-oxide-semiconductor B connects phase-shifting full-bridge PWM controller and the second time schedule controller, source ground;
The drain electrode of metal-oxide-semiconductor C connects Vin, and grid connects phase-shifting full-bridge PWM controller is connected n1 coil in the drain electrode of metal-oxide-semiconductor D and transformer T1 " 2 " pin with the second time schedule controller, source electrode;
The grid of metal-oxide-semiconductor D connects phase-shifting full-bridge PWM controller and the first time schedule controller, source ground;
The grid of metal-oxide-semiconductor SR1 connects the first driver for isolating, " 3 " pin of n2 coil in source electrode connection transformer T1, and drain electrode connects Vout ground;
The grid of metal-oxide-semiconductor SR2 connects the second driver for isolating, " 5 " pin of n3 coil in source electrode connection transformer T1, and drain electrode connects Vout ground;
Centre tap " 4 " pin in transformer T1 connects Vout;
The metal-oxide-semiconductor A produced by phase-shifting full-bridge PWM controller and metal-oxide-semiconductor D pulsewidth drive singal carry out isolating through the first driver for isolating the wide pulse width drive singal being enlarged into and being greater than 50% after the first time schedule controller carries out driving summation, synchronously drive synchronous rectifier SR1;
The metal-oxide-semiconductor B produced by phase-shifting full-bridge PWM controller and metal-oxide-semiconductor C pulsewidth drive singal carry out isolating through the second driver for isolating the wide pulse width drive singal being enlarged into and being greater than 50% after the second time schedule controller carries out driving summation, synchronously drive synchronous rectifier SR2;
Beneficial effect:
Synchronous rectification DC/DC the converter of the phase-shifting full-bridge of the utility model design, reduces switching loss and the loss of rear class rectification circuit of prime brachium pontis, improves the conversion efficiency of power supply, increase the power density of power supply.The driver' s timing of the utility model design carries out drived control to full-bridge metal-oxide-semiconductor and devices simultaneously, simplifies peripheral circuit, improves phase-shifting full-bridge and add the application prospect of synchronous rectification scheme under various different application occasion.
Accompanying drawing explanation
Fig. 1 is the utility model circuit block diagram.
Fig. 2 is the utility model driver' s timing.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
As shown in Figure 1, 2, the utility model provides a kind of synchronous rectification DC/DC converter of new type phase shifting full bridge, comprise phase-shifting full-bridge PWM controller, the first time schedule controller, the first driver for isolating, the second time schedule controller, the second driver for isolating, metal-oxide-semiconductor A, metal-oxide-semiconductor B, metal-oxide-semiconductor C, metal-oxide-semiconductor D, metal-oxide-semiconductor SR1, metal-oxide-semiconductor SR2, transformer T1
The drain electrode of metal-oxide-semiconductor A connects Vin, and grid connects phase-shifting full-bridge PWM controller and the first time schedule controller, and source electrode connects " 1 " pin of n1 coil in the drain electrode of metal-oxide-semiconductor B and transformer T1;
The grid of metal-oxide-semiconductor B connects phase-shifting full-bridge PWM controller and the second time schedule controller, source ground;
The drain electrode of metal-oxide-semiconductor C connects Vin, and grid connects phase-shifting full-bridge PWM controller is connected n1 coil in the drain electrode of metal-oxide-semiconductor D and transformer T1 " 2 " pin with the second time schedule controller, source electrode;
The grid of metal-oxide-semiconductor D connects phase-shifting full-bridge PWM controller and the first time schedule controller, source ground;
The grid of metal-oxide-semiconductor SR1 connects the first driver for isolating, " 3 " pin of n2 coil in source electrode connection transformer T1, and drain electrode connects Vout ground;
The grid of metal-oxide-semiconductor SR2 connects the second driver for isolating, " 5 " pin of n3 coil in source electrode connection transformer T1, and drain electrode connects Vout ground;
Centre tap " 4 " pin in transformer T1 connects Vout;
The metal-oxide-semiconductor A produced by phase-shifting full-bridge PWM controller and metal-oxide-semiconductor D pulsewidth drive singal carry out isolating through the first driver for isolating the wide pulse width drive singal being enlarged into and being greater than 50% after the first time schedule controller carries out driving summation, synchronously drive synchronous rectifier SR1;
The metal-oxide-semiconductor B produced by phase-shifting full-bridge PWM controller and metal-oxide-semiconductor C pulsewidth drive singal carry out isolating through the second driver for isolating the wide pulse width drive singal being enlarged into and being greater than 50% after the second time schedule controller carries out driving summation, synchronously drive synchronous rectifier SR2;
The utility model is used for for the switching tube of phase whole-bridging circuit and secondary synchronous rectification switch pipe provide drive singal.Phase whole-bridging circuit is on the advanced arm of driving and lagging leg while four metal-oxide-semiconductors, and two metal-oxide-semiconductors on full-bridge diagonal angle are driven summation by drive circuit, produce the wide pulse width drive singal that pulsewidth is greater than 50%, for controlling the turn-on and turn-off of rear class synchronous rectifier.Ensure that rectification metal-oxide-semiconductor is in the conducting phase of super-low impedance all the time at former limit energy conversion in the process of secondary, reduce the conduction loss of circuit, improve conversion efficiency.
The foregoing is only preferred embodiment of the present utility model, be not restricted to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within right of the present utility model.
Claims (1)
1. synchronous rectification DC/DC the converter of a new type phase shifting full bridge, it is characterized in that: comprise phase-shifting full-bridge PWM controller, the first time schedule controller, the first driver for isolating, the second time schedule controller, the second driver for isolating, metal-oxide-semiconductor A, metal-oxide-semiconductor B, metal-oxide-semiconductor C, metal-oxide-semiconductor D, metal-oxide-semiconductor SR1, metal-oxide-semiconductor SR2, transformer T1
The drain electrode of metal-oxide-semiconductor A connects Vin, and grid connects phase-shifting full-bridge PWM controller and the first time schedule controller, and source electrode connects " 1 " pin of n1 coil in the drain electrode of metal-oxide-semiconductor B and transformer T1;
The grid of metal-oxide-semiconductor B connects phase-shifting full-bridge PWM controller and the second time schedule controller, source ground;
The drain electrode of metal-oxide-semiconductor C connects Vin, and grid connects phase-shifting full-bridge PWM controller is connected n1 coil in the drain electrode of metal-oxide-semiconductor D and transformer T1 " 2 " pin with the second time schedule controller, source electrode;
The grid of metal-oxide-semiconductor D connects phase-shifting full-bridge PWM controller and the first time schedule controller, source ground;
The grid of metal-oxide-semiconductor SR1 connects the first driver for isolating, " 3 " pin of n2 coil in source electrode connection transformer T1, and drain electrode connects Vout ground;
The grid of metal-oxide-semiconductor SR2 connects the second driver for isolating, " 5 " pin of n3 coil in source electrode connection transformer T1, and drain electrode connects Vout ground;
Centre tap " 4 " pin in transformer T1 connects Vout;
The metal-oxide-semiconductor A produced by phase-shifting full-bridge PWM controller and metal-oxide-semiconductor D pulsewidth drive singal carry out isolating through the first driver for isolating the wide pulse width drive singal being enlarged into and being greater than 50% after the first time schedule controller carries out driving summation, synchronously drive synchronous rectifier SR1;
The metal-oxide-semiconductor B produced by phase-shifting full-bridge PWM controller and metal-oxide-semiconductor C pulsewidth drive singal carry out isolating through the second driver for isolating the wide pulse width drive singal being enlarged into and being greater than 50% after the second time schedule controller carries out driving summation, synchronously drive synchronous rectifier SR2.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520518846.4U CN204794706U (en) | 2015-07-16 | 2015-07-16 | Novel move synchronous Rectifier DCDC converter of looks full -bridge |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520518846.4U CN204794706U (en) | 2015-07-16 | 2015-07-16 | Novel move synchronous Rectifier DCDC converter of looks full -bridge |
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| CN204794706U true CN204794706U (en) | 2015-11-18 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107453614A (en) * | 2017-09-15 | 2017-12-08 | 肇庆市锐高电子有限公司 | Full-bridge synchronous rectification circuit |
| CN109586581A (en) * | 2018-12-15 | 2019-04-05 | 华南理工大学 | Digital Realization device for full-bridge DC/DC transducer synchronous rectification |
| CN109586597A (en) * | 2018-12-15 | 2019-04-05 | 华南理工大学 | It is a kind of that power supply mould group is aoxidized based on phase shifting full bridge soft switch and the high frequency of synchronous rectification |
| CN114096030A (en) * | 2021-12-23 | 2022-02-25 | 深圳市海洋王绿色照明技术有限公司 | High-power short-arc xenon lamp driving power supply and method |
-
2015
- 2015-07-16 CN CN201520518846.4U patent/CN204794706U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107453614A (en) * | 2017-09-15 | 2017-12-08 | 肇庆市锐高电子有限公司 | Full-bridge synchronous rectification circuit |
| CN109586581A (en) * | 2018-12-15 | 2019-04-05 | 华南理工大学 | Digital Realization device for full-bridge DC/DC transducer synchronous rectification |
| CN109586597A (en) * | 2018-12-15 | 2019-04-05 | 华南理工大学 | It is a kind of that power supply mould group is aoxidized based on phase shifting full bridge soft switch and the high frequency of synchronous rectification |
| CN114096030A (en) * | 2021-12-23 | 2022-02-25 | 深圳市海洋王绿色照明技术有限公司 | High-power short-arc xenon lamp driving power supply and method |
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