CN202872622U - High-efficiency bridge type rectification driving control circuit - Google Patents
High-efficiency bridge type rectification driving control circuit Download PDFInfo
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- CN202872622U CN202872622U CN 201220391268 CN201220391268U CN202872622U CN 202872622 U CN202872622 U CN 202872622U CN 201220391268 CN201220391268 CN 201220391268 CN 201220391268 U CN201220391268 U CN 201220391268U CN 202872622 U CN202872622 U CN 202872622U
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Abstract
Provided is a high-efficiency bridge type rectification driving control circuit which is provided with a power circuit and a current detection and driving control circuit. The high-efficiency bridge type rectification driving control circuit is characterized in that a rectification MOS Q1, a rectification MOS Q2, a rectification MOS Q3 and a rectification MOS Q4 together form a high-efficiency bridge type main power circuit; a rectifier diode D3 and a triode Q7 form a current direction detection and driving control circuit of the rectification MOS Q1; a rectifier diode D4 and a triode Q10 form a current direction detection and driving control circuit of the rectification MOS Q3; and conduction of the rectification MOS Q2 and conduction of the rectification MOS Q4 are respectively equal to the rectification MOS Q3 and the rectification MOS Q1 in terms of phase. Under a condition that an input voltage is not high, the circuit of the utility model has the obvious advantages of efficiency. The circuit is suitable for simultaneous input of alternating currents and direct currents. The driving circuit is controlled automatically to be on and off through detection of a current direction of power tubes, thereby preventing the currents from flowing reversely and improving the reliability. The high-efficiency bridge type rectification driving control circuit is safe and reliable, is simple in driving, and is a brand new innovation compared with a conventional bridge type rectification circuit.
Description
Affiliated technical field
The utility model relates to a kind of efficient bridge rectifier Drive and Control Circuit, be applicable to use in AC and DC all might be inputted simultaneously in the Switching Power Supply the situation, and input voltage is not very high situation, and efficient has obvious advantage.
Background technology
At present, a lot of conventional interchanges in the equipment of inputting, the Switching Power Supply input rectifying adopts diode to realize bridge rectifier usually, and for lower-powered power supply, the loss that produces on the rectifier diode is influential to overall efficiency.For the larger power supply of power, the loss that produces on the rectifier diode then obviously increases the proportion that affects of overall efficiency, if cooling measure is good not, even has influence on whole product reliability.
Another kind of bridge rectifier adopts two diodes as upper pipe, two other metal-oxide-semiconductor is as the mixed-rectification mode of lower pipe, and this mode has effectively been improved the problem of two large heat radiations that produce of diode drop and loss, has improved product efficiency.Than simple bridge diode rectification, it is relatively easy that lower pipe drives, and upper pipe is diode, can the generation current reverse flow, there is not the risk of bridge arm direct pass yet.Pipe produces the problem of loss on remaining two diodes but this mode still can not solve completely.Little for wanting cube, electric current is larger, and is still not too applicable on the high product of power density.
Power supply product, common are two kinds of AC-input voltage and DC input voitage, but the requirement that also has the input of requirement AC/DC all can work, the product 24VAC input and the 12VDC input requirements compatible design that for example have, power is between 20-40W, even higher power requirement, the input rectifying part that this moment, we mentioned is most important on the impact of overall efficiency, if use bridge rectifier, suppose that diode drop is at 0.7V, input current be 1A then average loss be Pa=0.7X2=1.4W, if use two diodes as upper pipe and two metal-oxide-semiconductors mixed-rectification mode as lower pipe, loss almost reduces half on the rectifying bridge arm, obviously in order thoroughly to reduce the brachium pontis loss, significantly raise the efficiency, we can adopt the mode of whole metal-oxide-semiconductor rectifications to realize that overall efficiency has obvious lifting.But changing upper pipe into metal-oxide-semiconductor, exist to drive difficult problem, mainly is to need to detect the brachium pontis electric current.Conventional method is to increase sample resistance, by judging that the ohmically sense of current determines whether to open and which is opened to brachium pontis, increased like this loss, also increased complexity.Obviously lower efficiency if design bad meeting, and can reduce system reliability.
Summary of the invention
Task of the present invention provides a kind of efficient bridge rectifier Drive and Control Circuit, it can use the rectifier diode of routine efficient metal-oxide-semiconductor rectification to substitute, in the situation that input current is larger, improve greatly power work efficient to satisfy, improve reliability.
In order to solve above-mentioned task, solution of the present invention is;
A kind of efficient bridge rectifier Drive and Control Circuit has power circuit and current detecting and Drive and Control Circuit, it is characterized in that; Rectification metal-oxide-semiconductor Q1, rectification metal-oxide-semiconductor Q2, rectification metal-oxide-semiconductor Q3, rectification metal-oxide-semiconductor Q4 forms an efficient bridge-type main power circuit, rectifier diode D3, triode Q7 forms rectification metal-oxide-semiconductor Q1 current direction detection and Drive and Control Circuit, rectifier diode D4, triode Q10 form another rectification metal-oxide-semiconductor Q3 current direction detection and Drive and Control Circuit, wherein rectification metal-oxide-semiconductor Q2, the conducting of rectification metal-oxide-semiconductor Q4 be respectively with rectification metal-oxide-semiconductor Q3, rectification metal-oxide-semiconductor Q1 same-phase.
Control circuit partly is by R1, R2, and ZD1, two lower end MOS rectifier control circuits of ZD2 composition, the VCC1 power supply, D3, Q7 and Drive and Control Circuit composition drive control to Q1, same VCC2 power supply, D4, Q10 and drive circuit composition drive control to Q2;
Current detection circuit mainly is to detect the upper pipe MOS sense of current, effectively controls its corresponding metal-oxide-semiconductor open-minded.For example, be input as and exchange the input power supply, negative as the positive N of L, and the sinusoidal wave pattern input voltage is when being higher than C3 voltage VDC+, and Q1, Q4 be to the pipe conducting,, L voltage is through R2, and ZD2 forms voltage stabilizing circuit and is added in the Q4 base stage, makes its conducting.Diode drop is Vq1 in the Q1 body, and the pressure drop of D3 is V
F1, the B of Q7, the E extreme pressure is reduced to Vbe1, the interior diode current flowing of Q1 body this moment, V
F1＜Vbe1+Vq1, the VCC1 electric current is through R3, and D3 passes through, and Q7 turn-offs, drive circuit works, Q1 is open-minded.When input dextrorotation wave voltage was lower than VDC+, the Q1 body diode did not have electric current process, V
F1＞Vbe1+Vq1, the VCC1 electric current is through R3, and Q7 passes through, and Q7 is open-minded, and drive circuit turn-offs, and Q1 turn-offs.At this moment only have Q4 open-minded, other three metal-oxide-semiconductors turn-off, and do not affect bridge circuit work.As the positive L negative potential of N Q3, Q2 opens the similar Q1 of principle, Q4 opening process.
When input voltage is direct current supply, because input is bridge rectifier, to L, the no requirement (NR) of N polarity.Suppose that input L positive N is negative, then electric current one is straight through Q1, Q4, and the Drive and Control Circuit operation principle is with above-mentioned.
The beneficial effects of the utility model
When occurring requiring interchange input and direct current input compatibility and power larger, if adopt diode to carry out bridge rectifier, then the loss of product generation will be excessive, so that overall efficiency is low, when product is used for comparing under the rugged environment condition, easily affect product reliability.
The loss that the utility model adopts the Novel bridge type rectification circuit effectively four diode rectifications to be produced substitutes by four metal-oxide-semiconductor rectifications, has greatly improved efficient, and when having reduced machine loss, the minimizing of heating has improved the reliability of product.Utilize dexterously circuit characteristic reasonably to control, circuit controller spare cost is low, again with the efficient raising of power supply, effectively provides a kind of energy-conservation again reliable design for similar Related product simultaneously.
Description of drawings
Fig. 1 conventional products conceptual design block diagram
Fig. 2 the utility model conceptual design block diagram
Fig. 3 diode bridge rectification schematic diagram
Fig. 4 metal-oxide-semiconductor bridge rectifier schematic diagram
The number in the figure explanation is referring to Fig. 1 conventional products conceptual design block diagram, and front end adopts the triode rectification, and the rear end adopts the DC-DC conversion to realize whole power source design.Fig. 2 adopts the utility model metal-oxide-semiconductor rectifier system and rear end DC-DC conversion plan to realize whole power source design.
Referring to the common diode bridge rectification schematic diagram of Fig. 3 by D1, D2, D3, D4, C1 forms, Fig. 4 metal-oxide-semiconductor bridge rectifier schematic diagram has Q1, Q2, and Q3, Q4, C1 forms bridge rectifier, VCC1 and VCC2 auxiliary power supply and drive circuit, R1, ZD1 and R2, the voltage stabilizing drive circuit that ZD2 forms.
Embodiment
Below in conjunction with Fig. 2, Fig. 4 is further described the utility model.
Embodiment just meets an example of the utility model technology contents, and the utility model comprises and but is not limited to the described content of following embodiment, and namely the content of the present embodiment is not to further restriction of the present utility model.
For easy analysis, the present embodiment is only analyzed single closed-loop path, i.e. Q1, Q4, the closed-loop path that C3 forms.The present embodiment as principle explanation and circuit analysis, to the present embodiment principle analysis, is not the restriction to the utility model principle only.
Embodiment;
By Q1, Q4, in the closed-loop path that C3 forms, when being high potential by the relative N network of L network during the conducting of Q4, this moment is through R2 and ZD2 conducting, so that the grid of Q4 produces stable operating voltage so that the Q4 saturation conduction, for the conducting of Q1, when stable state, the VCC1 accessory power supply is used for providing the energy of Q1 conducting, judge the key that can Q1 conducting this moment, to judge whether diode has the forward conduction electric current in its body, if produce forward conduction electric current, then not conducting of Q7 of D3 conducting, corresponding is the Q1 conducting, then not conducting of Q1 of Q7 conducting.Come Q1 is carried out switch control by sequential dexterously, to Q1, on the parts selection of Q4, can choose very easily suitable device, because the index corresponding to key is withstand voltage Vds, conducting internal resistance Rds (on) and corresponding difference require the encapsulation in the situation to select also to enrich very much.
Working frequency ripple wave when the effect of capacitor C 3 mainly is level and smooth interchange input, make its condition as the input of rear end DC-DC module more stable.The selection of C3 size of devices is relevant with the practical application condition.
Q3, Q2, the operation principle of C3 and Q1, Q4, the operation principle of C3 is identical, goes round and begins again, and reaches to adopt metal-oxide-semiconductor to carry out the effect of bridge rectifier.
The utility model adopts the Novel bridge type rectification circuit, utilizes dexterously circuit characteristic reasonably to control, and circuit controller spare cost is low, again with the efficient raising of power supply, is a kind of brand-new design to traditional bridge rectifier simultaneously.
Claims (1)
1. an efficient bridge rectifier Drive and Control Circuit has power circuit and current detecting and Drive and Control Circuit, it is characterized in that; Rectification metal-oxide-semiconductor Q1, rectification metal-oxide-semiconductor Q2, rectification metal-oxide-semiconductor Q3, rectification metal-oxide-semiconductor Q4 forms an efficient bridge-type main power circuit, rectifier diode D3, triode Q7 forms rectification metal-oxide-semiconductor Q1 current direction detection and Drive and Control Circuit, rectifier diode D4, triode Q10 form another rectification metal-oxide-semiconductor Q3 current direction detection and Drive and Control Circuit, wherein rectification metal-oxide-semiconductor Q2, the conducting of rectification metal-oxide-semiconductor Q4 be respectively with rectification metal-oxide-semiconductor Q3, rectification metal-oxide-semiconductor Q1 same-phase.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220391268 CN202872622U (en) | 2012-08-08 | 2012-08-08 | High-efficiency bridge type rectification driving control circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220391268 CN202872622U (en) | 2012-08-08 | 2012-08-08 | High-efficiency bridge type rectification driving control circuit |
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| CN202872622U true CN202872622U (en) | 2013-04-10 |
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| CN 201220391268 Expired - Fee Related CN202872622U (en) | 2012-08-08 | 2012-08-08 | High-efficiency bridge type rectification driving control circuit |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103475195A (en) * | 2013-08-29 | 2013-12-25 | 华为技术有限公司 | Synchronous rectification control circuit and synchronous rectification control method |
| CN104092391A (en) * | 2014-07-24 | 2014-10-08 | 国家电网公司 | Zero-loss rectifying circuit for induction electricity obtaining power supply |
| CN105553296A (en) * | 2015-12-16 | 2016-05-04 | 深圳市新国都支付技术有限公司 | Power supply compatible circuit |
| CN112583287A (en) * | 2020-12-18 | 2021-03-30 | 中国长城科技集团股份有限公司 | Control unit of active bridge rectifier circuit and rectifier device |
-
2012
- 2012-08-08 CN CN 201220391268 patent/CN202872622U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103475195A (en) * | 2013-08-29 | 2013-12-25 | 华为技术有限公司 | Synchronous rectification control circuit and synchronous rectification control method |
| CN103475195B (en) * | 2013-08-29 | 2016-04-13 | 华为技术有限公司 | A kind of synchronous commutating control circuit and synchronous rectification control method |
| US9391534B2 (en) | 2013-08-29 | 2016-07-12 | Huawei Technologies Co., Ltd. | Comparator based synchronous rectifier control circuit and synchronous rectifier control method |
| CN104092391A (en) * | 2014-07-24 | 2014-10-08 | 国家电网公司 | Zero-loss rectifying circuit for induction electricity obtaining power supply |
| CN105553296A (en) * | 2015-12-16 | 2016-05-04 | 深圳市新国都支付技术有限公司 | Power supply compatible circuit |
| CN112583287A (en) * | 2020-12-18 | 2021-03-30 | 中国长城科技集团股份有限公司 | Control unit of active bridge rectifier circuit and rectifier device |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice | ||
| DD01 | Delivery of document by public notice |
Addressee: Nengji Power Supply (Shenzhen) Co., Ltd. Document name: Notification to Pay the Fees |
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| DD01 | Delivery of document by public notice | ||
| DD01 | Delivery of document by public notice |
Addressee: Enargy Power (Shenzhen) Co.,Ltd. Document name: Notification of Termination of Patent Right |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130410 Termination date: 20190808 |