CN105978369B - Circuit of synchronous rectification and synchronous rectification method - Google Patents
Circuit of synchronous rectification and synchronous rectification method Download PDFInfo
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- CN105978369B CN105978369B CN201610380532.1A CN201610380532A CN105978369B CN 105978369 B CN105978369 B CN 105978369B CN 201610380532 A CN201610380532 A CN 201610380532A CN 105978369 B CN105978369 B CN 105978369B
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- oxide
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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
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
- H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/21—Conversion of ac power input into dc 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
- H02M7/217—Conversion of ac power input into dc 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
- H02M7/219—Conversion of ac power input into dc 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 in a bridge configuration
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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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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
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Abstract
The present invention provides a kind of circuit of synchronous rectification.The circuit of synchronous rectification includes alternating message source, source driving signal, the the first metal-oxide-semiconductor group and the second metal-oxide-semiconductor group being electrically connected with the alternating message source, the first metal-oxide-semiconductor group and the second metal-oxide-semiconductor group form a bridge rectifier, the alternating message source is of coupled connections with the source driving signal, the source driving signal includes the first source driving signal and the second source driving signal, first source driving signal and second source driving signal are identical as the phase of the forward current of the alternating message source and reverse current respectively, and first source driving signal is electrically connected with the first metal-oxide-semiconductor group and the second metal-oxide-semiconductor group respectively with second source driving signal.The circuit of synchronous rectification has the characteristics that loss is small, high-efficient.Based on the circuit of synchronous rectification, the present invention also provides a kind of synchronous rectification methods.
Description
Technical field
The present invention relates to field of circuit technology, and in particular to a kind of circuit of synchronous rectification and synchronous rectification method.
Background technique
Rectification circuit is the circuit for AC energy being converted to direct current energy, and the course of work is that ac buck circuit is defeated
The lower alternating current of voltage out is converted into unidirectional pulsating nature direct current.
In the related technology, in many regular alternating current input equipments, Switching Power Supply input rectifying generallys use diode reality
Existing bridge rectifier, for lower-powered power supply, the loss generated on rectifier diode is influential on overall efficiency.It is right
It is then affected to overall efficiency in the loss generated on the biggish power supply of power, rectifier diode, if cooling measure is not
It reaches, or even influences whether the reliability of entire product.
Therefore, it is necessary to provide a kind of new rectification circuit solution above-mentioned technical problem.
Summary of the invention
Small, high-efficient circuit of synchronous rectification is lost the purpose of the present invention is to provide a kind of.
Technical solution provided by the invention is as follows:
A kind of circuit of synchronous rectification, including alternating message source, source driving signal, be electrically connected with the alternating message source
One metal-oxide-semiconductor group and the second metal-oxide-semiconductor group, the first metal-oxide-semiconductor group and the second metal-oxide-semiconductor group form a bridge rectifier,
The alternating message source is of coupled connections with the source driving signal, and the source driving signal includes the first source driving signal and second
Source driving signal, first source driving signal and second source driving signal are electric with the forward direction of the alternating message source respectively
Flow identical with the phase of reverse current, and first source driving signal and second source driving signal are respectively with described first
Metal-oxide-semiconductor group and the second metal-oxide-semiconductor group electrical connection.
Preferably, the circuit of synchronous rectification further includes filter circuit, the filter circuit and the bridge rectifier
Output end electrical connection.
The present invention also provides a kind of synchronous rectification methods.
The synchronous rectification method, comprising the following steps:
Alternating message source, source driving signal and the first metal-oxide-semiconductor group and the second metal-oxide-semiconductor that form bridge rectifier are provided
Group, the source driving signal include the first source driving signal and the second source driving signal, first source driving signal and described
Second source driving signal is identical as the phase of the forward current of the alternating message source and reverse current respectively；
First source driving signal and second source driving signal respectively drive the first metal-oxide-semiconductor group and described
Two metal-oxide-semiconductor groups open or close；When the first metal-oxide-semiconductor group is opened, the second metal-oxide-semiconductor group is closed, first metal-oxide-semiconductor
Group rectifies the electric signal of the alternating message source；When the first metal-oxide-semiconductor group is closed, the second metal-oxide-semiconductor group is opened
When, the second metal-oxide-semiconductor group rectifies the electric signal of the alternating message source.
Preferably, the synchronous rectification method further includes that the direct current that the bridge rectifier exports is filtered place
Manage step.
Compared with the relevant technologies, circuit of synchronous rectification and synchronous rectification method provided by the invention, beneficial effect are:
One, the circuit of synchronous rectification substitutes diode in the related technology using metal-oxide-semiconductor group, effectively improves diode
Heat dissipation caused by pressure drop and loss problem, improve the reliability of power work.
Two, the source driving signal includes the first source driving signal and the second source driving signal, first driving signal
Source and second source driving signal are identical as the phase of the forward current of the alternating message source and reverse current respectively, make
The driving signal of the output of source driving signal described in switching process is stronger, to reach the mesh for improving rectified current working efficiency
's.
Detailed description of the invention
Fig. 1 is the circuit diagram of circuit of synchronous rectification of the present invention.
Specific embodiment
Below in conjunction with drawings and embodiments, the invention will be further described.
Referring to Fig. 1, being the circuit diagram of circuit of synchronous rectification of the present invention.The circuit of synchronous rectification 1 includes AC signal
Source 11, source driving signal 12, the first metal-oxide-semiconductor group (not labeled), the second metal-oxide-semiconductor group (not labeled) and filter circuit 15.
The alternating message source 11 is of coupled connections with the source driving signal 12, and the alternating message source 11 is provided wait rectify
The electric signal of electric current, and by the electric signal transmission to the source driving signal 12.Meanwhile the alternating message source 11 and described the
One metal-oxide-semiconductor group and the second metal-oxide-semiconductor group electrical connection.
The source driving signal 12 includes the first source driving signal 121 being of coupled connections respectively with the alternating message source 11
With the second source driving signal 122, first source driving signal 121 and second source driving signal 122 respectively with the friendship
The forward current for flowing signal source 11 is identical with the phase of reverse current, first source driving signal 121 and first metal-oxide-semiconductor
Group electrical connection, for driving opening or closing for the first metal-oxide-semiconductor group；Second source driving signal 122 and described second
Metal-oxide-semiconductor group electrical connection, for driving the second metal-oxide-semiconductor group to open or close.
The first metal-oxide-semiconductor group and the second metal-oxide-semiconductor group form a bridge rectifier, wherein first MOS
Pipe group includes the first metal-oxide-semiconductor 131 and the second metal-oxide-semiconductor 132, and first metal-oxide-semiconductor 131 and second metal-oxide-semiconductor 132 are connected, and
First metal-oxide-semiconductor 131 and second metal-oxide-semiconductor 132 open or close simultaneously.
The second metal-oxide-semiconductor group includes third metal-oxide-semiconductor 141 and the 4th metal-oxide-semiconductor 142, the third metal-oxide-semiconductor 141 and described
The series connection of 4th metal-oxide-semiconductor 142, and third metal-oxide-semiconductor 141 and the 4th metal-oxide-semiconductor 142 open or close simultaneously.
Specifically, first source driving signal 121 respectively with first metal-oxide-semiconductor 131 and second metal-oxide-semiconductor 132
Electrical connection, second source driving signal 122 are electrically connected with the third metal-oxide-semiconductor 141 and the 4th metal-oxide-semiconductor 142 respectively.
When the source driving signal 12 drives the first metal-oxide-semiconductor group to open, and the second metal-oxide-semiconductor group is closed, with institute
The driving signal for stating first source driving signal 121 of 11 same-phase of alternating message source sequentially turns on first metal-oxide-semiconductor 131
With second metal-oxide-semiconductor 132, rectify the bridge rectifier to the electric signal of the alternating message source 11；
When the source driving signal 12 drives the first metal-oxide-semiconductor group to close, the second metal-oxide-semiconductor group is opened, with institute
The driving signal for stating second source driving signal 122 of 11 same-phase of alternating message source sequentially turns on the third metal-oxide-semiconductor 141
With the 4th metal-oxide-semiconductor 142, rectify the bridge rectifier to the electric signal of the alternating message source 11.
The filter circuit 15 is electrically connected with the output end of the bridge rectifier, is used for the bridge rectifier
The direct current of output is filtered.Specifically, the filter circuit 15 includes the inductance 151 and capacitor 152 of electrical connection.
The present invention also provides a kind of synchronous rectification method, the synchronous rectification method includes the following steps:
Step 1: providing the first of the alternating message source 11, the source driving signal 12 and formation bridge rectifier
Metal-oxide-semiconductor group and the second metal-oxide-semiconductor group, the source driving signal 12 include the first source driving signal 121 and the second source driving signal
122, first source driving signal 121 and second source driving signal 122 forward direction with the alternating message source 11 respectively
Electric current is identical with the phase of reverse current；
Step 2: the electric signal to rectified current is sent to the source driving signal 12 by the alternating message source 11；
Specifically, the alternating message source 11 is respectively different phase electricity according to the electrical signal phase to rectified current
Signal is transmitted to first source driving signal 121 and second source driving signal 122, makes first source driving signal
121 or described second source driving signals 122 and the alternating message source 11 electric signal having the same；
Step 3: first source driving signal 121 and second source driving signal 122 respectively drive described first
Metal-oxide-semiconductor group and the second metal-oxide-semiconductor group open or close；When the first metal-oxide-semiconductor group is opened, the second metal-oxide-semiconductor group is closed
When, the first metal-oxide-semiconductor group rectifies the electric signal of the alternating message source 11；When the first metal-oxide-semiconductor group is closed, institute
When stating the unlatching of the second metal-oxide-semiconductor group, the second metal-oxide-semiconductor group rectifies the electric signal of the alternating message source 11；
Specifically, second metal-oxide-semiconductor is closed when the source driving signal 121 drives the first metal-oxide-semiconductor group to open
When, described first is sequentially turned on the driving signal of first source driving signal 121 of 11 same-phase of alternating message source
Metal-oxide-semiconductor 131 and second metal-oxide-semiconductor 132 carry out the first metal-oxide-semiconductor group to the electric signal of the alternating message source 11 whole
Stream；
When the source driving signal 122 drives the first metal-oxide-semiconductor group to close, and the second metal-oxide-semiconductor group is opened, with institute
The driving signal for stating second source driving signal 122 of 11 same-phase of alternating message source sequentially turns on the third metal-oxide-semiconductor 141
With the 4th metal-oxide-semiconductor 142, rectify the second metal-oxide-semiconductor group to the electric signal of the alternating message source 11.
Step 4: the direct current that the bridge rectifier exports is filtered.
Compared with the relevant technologies, circuit of synchronous rectification and synchronous rectification method provided by the invention, beneficial effect are:
One, the circuit of synchronous rectification 1 substitutes the relevant technologies using the first metal-oxide-semiconductor group and the second metal-oxide-semiconductor group
In diode, effectively improve heat dissipation caused by diode drop and loss problem, improve the reliability of power work.
Two, the source driving signal 12 include the first source driving signal 121 and the second source driving signal 122, described first
Source driving signal 121 and second source driving signal 122 are respectively with the forward current of the alternating message source 11 and reversely electric
The phase of stream is identical, and the driving signal for exporting the source driving signal 12 described in switching process is stronger, so that it is whole to reach raising
The purpose of galvanic electricity stream working efficiency.
The above description is only an embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair
Equivalent structure or equivalent flow shift made by bright specification and accompanying drawing content is applied directly or indirectly in other relevant skills
Art field, is included within the scope of the present invention.
Claims (4)
1. a kind of circuit of synchronous rectification, which is characterized in that including alternating message source, source driving signal and the alternating message source
The the first metal-oxide-semiconductor group and the second metal-oxide-semiconductor group of electrical connection, the first metal-oxide-semiconductor group and the second metal-oxide-semiconductor group form a bridge-type
Rectification circuit, the alternating message source are of coupled connections with the source driving signal, and the source driving signal includes the first driving letter
Number source and the second source driving signal, first source driving signal and second source driving signal respectively with the AC signal
The forward current in source and the phase of reverse current are identical, and first source driving signal and second source driving signal are distinguished
It is electrically connected with the first metal-oxide-semiconductor group and the second metal-oxide-semiconductor group.
2. circuit of synchronous rectification according to claim 1, which is characterized in that the circuit of synchronous rectification further includes filtered electrical
Road, the filter circuit are electrically connected with the output end of the bridge rectifier.
3. a kind of synchronous rectification method, which comprises the following steps:
Alternating message source, source driving signal and the first metal-oxide-semiconductor group and the second metal-oxide-semiconductor group that form bridge rectifier, institute are provided
Stating source driving signal includes the first source driving signal and the second source driving signal, and first source driving signal and described second drive
Dynamic signal source is identical as the phase of the forward current of the alternating message source and reverse current respectively；
First source driving signal and second source driving signal respectively drive the first metal-oxide-semiconductor group and described second
Metal-oxide-semiconductor group opens or closes；When the first metal-oxide-semiconductor group is opened, the second metal-oxide-semiconductor group is closed, the first metal-oxide-semiconductor group
The electric signal of the alternating message source is rectified；When the first metal-oxide-semiconductor group is closed, the second metal-oxide-semiconductor group is opened,
The second metal-oxide-semiconductor group rectifies the electric signal of the alternating message source.
4. synchronous rectification method according to claim 3, which is characterized in that further include exporting the bridge rectifier
Direct current be filtered step.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610380532.1A CN105978369B (en) | 2016-05-31 | 2016-05-31 | Circuit of synchronous rectification and synchronous rectification method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610380532.1A CN105978369B (en) | 2016-05-31 | 2016-05-31 | Circuit of synchronous rectification and synchronous rectification method |
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| Publication Number | Publication Date |
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| CN105978369A CN105978369A (en) | 2016-09-28 |
| CN105978369B true CN105978369B (en) | 2019-03-15 |
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| CN201610380532.1A Active CN105978369B (en) | 2016-05-31 | 2016-05-31 | Circuit of synchronous rectification and synchronous rectification method |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110492768A (en) * | 2019-08-13 | 2019-11-22 | 苏州格远电气有限公司 | Rectifier circuit |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1272235A (en) * | 1998-05-18 | 2000-11-01 | 精工爱普生株式会社 | Method of overcharge prevention, charger circuit, electronic device and timepiece |
| CN102790543A (en) * | 2012-08-07 | 2012-11-21 | 浙江宇视科技有限公司 | Synchronous rectification system |
| CN204068748U (en) * | 2014-07-29 | 2014-12-31 | 安徽江淮汽车股份有限公司 | A kind of circuit of synchronous rectification |
| CN104617794A (en) * | 2015-02-13 | 2015-05-13 | 深圳欧陆通电子有限公司 | Switch power supply and rectifying circuit |
| CN105450056A (en) * | 2016-01-08 | 2016-03-30 | 詹济铭 | Synchronous rectification module, rectification apparatus and rectification circuit |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000270562A (en) * | 1999-03-15 | 2000-09-29 | Yaskawa Electric Corp | Multilevel power converter |
-
2016
- 2016-05-31 CN CN201610380532.1A patent/CN105978369B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1272235A (en) * | 1998-05-18 | 2000-11-01 | 精工爱普生株式会社 | Method of overcharge prevention, charger circuit, electronic device and timepiece |
| CN102790543A (en) * | 2012-08-07 | 2012-11-21 | 浙江宇视科技有限公司 | Synchronous rectification system |
| CN204068748U (en) * | 2014-07-29 | 2014-12-31 | 安徽江淮汽车股份有限公司 | A kind of circuit of synchronous rectification |
| CN104617794A (en) * | 2015-02-13 | 2015-05-13 | 深圳欧陆通电子有限公司 | Switch power supply and rectifying circuit |
| CN105450056A (en) * | 2016-01-08 | 2016-03-30 | 詹济铭 | Synchronous rectification module, rectification apparatus and rectification circuit |
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| CN105978369A (en) | 2016-09-28 |
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