CN205622534U - Synchronous rectifier circuit - Google Patents
Synchronous rectifier circuit Download PDFInfo
- Publication number
- CN205622534U CN205622534U CN201620373851.5U CN201620373851U CN205622534U CN 205622534 U CN205622534 U CN 205622534U CN 201620373851 U CN201620373851 U CN 201620373851U CN 205622534 U CN205622534 U CN 205622534U
- Authority
- CN
- China
- Prior art keywords
- resonant element
- pole
- electric capacity
- switching tube
- connects
- 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.)
- Active
Links
Classifications
-
- 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
Landscapes
- Dc-Dc Converters (AREA)
- Rectifiers (AREA)
Abstract
The utility model discloses a synchronous rectifier circuit, include: positive input line, negative pole input line, electric capacity, a LC resonance unit, first switch tube, second switch pipe, the 2nd LC resonance unit, transformer, positive output line and negative output line. The utility model discloses a synchronous rectifier circuit can improved circuit conversion efficiency.
Description
Technical field
This utility model relates to power converter technical field, particularly relates to a kind of circuit of synchronous rectification.
Background technology
Traditional charger device, do not account for the high speed of system, high frequency, miniaturization, energy-saving,
Harmonic pollution to electrical network.Secondary commutation circuit is traditional diode rectification, causes charger defeated
Going out pressure drop big, pressure drop is more than 0.7 volt, and this pressure drop greatly reduces the conversion efficiency of system.
The most traditional charger system response speed is slow, volume big, and charge efficiency is low, dirty to the harmonic wave of electrical network
Dye is serious.In new-energy automobile charging field, mobile unit is the highest to the power conservation requirement of charger, as
Really charger causes electric automobile to waste electric energy, and New-energy electric vehicle charger does not just have the application of reality
It is worth.
Utility model content
The purpose of this utility model is to provide a kind of circuit of synchronous rectification, can improve circuit conversion effect
Rate.
The technical solution of the utility model is as follows:
A kind of circuit of synchronous rectification, including: positive pole input line, negative pole input line, electric capacity, a LC
Resonant element, the first switching tube, second switch pipe, the 2nd LC resonant element, transformator, positive pole are defeated
Outlet and negative pole output lead, described positive pole input line and described negative pole input line are used for connecting D/C power,
One end of described positive pole input line connects a pole plate of described electric capacity, a described LC resonant element respectively
One end, the D pole of described first switching tube, the S pole of described second switch pipe, described 2nd LC humorous
Shake one end of unit, and one end of described negative pole input line connects another pole plate of described electric capacity, described respectively
The other end of the oneth LC resonant element, the S pole of described first switching tube, described 2nd LC resonance list
The other end of unit connects the former limit of described transformator, and the S pole of described first switching tube connects described transformator
Former limit, the D pole of described second switch pipe connects the former limit of described transformator, the secondary of described transformator
Connect described positive pole output lead and described negative pole output lead respectively.
Further: the G pole of described first switching tube and described second switch pipe is used to connect DSP control
Device processed.
Further: described first switching tube and described second switch pipe are N-channel insulated-gate field-effect
Pipe.
Further, a described LC resonant element includes: LC resonant element inductance and a LC
Resonant element electric capacity, one end of a described LC resonant element inductance connects described first switching tube respectively
D pole, the S pole of described second switch pipe, the other end of a described LC resonant element inductance connects
One pole plate of a described LC resonant element electric capacity, another pole of a described LC resonant element electric capacity
Plate connects the S pole of described first switching tube.
Further, described 2nd LC resonant element includes: the 2nd LC resonant element inductance and the 2nd LC
Resonant element electric capacity, a pole plate of described 2nd LC resonant element electric capacity connects a described LC resonance
One end of unit inductance, another pole plate of described 2nd LC resonant element electric capacity connects described 2nd LC
One end of resonant element inductance, the other end of described 2nd LC resonant element inductance connects described transformator
Former limit.
Compared with prior art, this utility model has the advantage that
1, circuit of synchronous rectification of the present utility model, can improve circuit conversion efficiency.
When 2, circuit of synchronous rectification of the present utility model being applied to charger device, it is possible to effectively make up
The problem that tradition charger device conversion efficiency is low, is greatly enhanced the saving to electric energy.
When 3, synchronization finishing circuit of the present utility model being applied to charger device, it is possible to provide the highest
Speed, stable, energy-conservation novel electric vehicle charger device.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of circuit of synchronous rectification of the present utility model.
Detailed description of the invention
Understandable for enabling above-mentioned purpose of the present utility model, feature and advantage to become apparent from, below in conjunction with
Drawings and Examples are described in further detail.
The utility model discloses a kind of circuit of synchronous rectification.As it is shown in figure 1, be of the present utility model same
The circuit diagram of step rectification circuit.
This circuit of synchronous rectification, including: positive pole input line, negative pole input line, electric capacity C, a LC
Resonant element, the first switching tube Q1, second switch pipe Q2, the 2nd LC resonant element, transformator T,
Positive pole output lead and negative pole output lead.This positive pole input line and negative pole input line are used for connecting D/C power.
One end of positive pole input line connect respectively a pole plate of electric capacity C, one end of a LC resonant element,
One switching tube Q1D pole, second switch pipe Q2S pole, one end of the 2nd LC resonant element.Negative
One end of pole input line connect respectively another pole plate of electric capacity C, the other end of a LC resonant element,
First switching tube Q1S pole, the former limit of the other end connection transformer T of the 2nd LC resonant element.
First switching tube Q1The former limit of S pole connection transformer, second switch pipe Q2D pole connection transformer
The former limit of T, the secondary of transformator T connects positive pole output lead and described negative pole output lead respectively.
Concrete, the first switching tube Q1With second switch pipe Q2G pole be used to connect DSP control
Device.Such as, the dsp controller of this circuit of synchronous rectification and circuit for charging machine can be connected.
Preferably, the first switching tube Q1With second switch pipe Q2It is N-channel isolated gate FET.
It is furthermore preferred that in order to improve power-efficient, select the first switching tube Q1With second switch pipe Q2Frequency
Lower limit is 200kHz, so can reduce the switching loss of power supply.
Concrete, a LC resonant element includes: a LC resonant element inductance L1With a LC
Resonant element electric capacity C1.Oneth LC resonant element inductance L1One end connect the first switching tube respectively
Q1D pole, second switch pipe Q2S pole.Oneth LC resonant element inductance L1The other end connect
Oneth LC resonant element electric capacity C1A pole plate.Oneth LC resonant element electric capacity C1Another pole plate
Connect the first switching tube Q1S pole.2nd LC resonant element includes: the 2nd LC resonant element inductance
L2With the 2nd LC resonant element electric capacity C2.2nd LC resonant element electric capacity C2One pole plate connect first
LC resonant element inductance L2One end.2nd LC resonant element electric capacity C2Another pole plate connect second
LC resonant element inductance L2One end, the 2nd LC resonant element inductance L2Other end connection transformer
The former limit of T.
Circuit of synchronous rectification of the present utility model, can improve circuit conversion efficiency.By of the present utility model
When circuit of synchronous rectification is applied to charger device, it is possible to effectively make up tradition charger device conversion efficiency
Low problem, is greatly enhanced the saving to electric energy, it is possible to provide more at a high speed, stable, energy-conservation novel
Charger device for electromobile.
Above to the technical solution of the utility model, it is described in detail, used herein the most individual
Principle of the present utility model and embodiment are set forth by example, and the explanation of above example is only intended to
Help to understand core concept of the present utility model；Simultaneously for one of ordinary skill in the art, foundation
The thought of this utility model embodiment, the most all will change,
In sum, this specification content should not be construed as the restriction to this utility model embodiment.
Claims (5)
1. a circuit of synchronous rectification, it is characterised in that including: positive pole input line, negative pole input line,
Electric capacity, a LC resonant element, the first switching tube, second switch pipe, the 2nd LC resonant element,
Transformator, positive pole output lead and negative pole output lead, described positive pole input line and described negative pole input line are used for
Connect D/C power, one end of described positive pole input line connect respectively a pole plate of described electric capacity, described the
One end of one LC resonant element, the D pole of described first switching tube, the S pole of described second switch pipe,
One end of described 2nd LC resonant element, one end of described negative pole input line connects described electric capacity respectively
Another pole plate, the other end of a described LC resonant element, the S pole of described first switching tube, described
The other end of the 2nd LC resonant element connects the former limit of described transformator, the S pole of described first switching tube
Connecting the former limit of described transformator, the D pole of described second switch pipe connects the former limit of described transformator, institute
The secondary stating transformator connects described positive pole output lead and described negative pole output lead respectively.
2. circuit of synchronous rectification as claimed in claim 1, it is characterised in that: described first switching tube and
The G pole of described second switch pipe is used to connect dsp controller.
3. circuit of synchronous rectification as claimed in claim 1, it is characterised in that: described first switching tube and
Described second switch pipe is N-channel isolated gate FET.
4. circuit of synchronous rectification as claimed in claim 1, it is characterised in that a described LC resonance
Unit includes: a LC resonant element inductance and a LC resonant element electric capacity, a described LC
One end of resonant element inductance connects the D pole of described first switching tube, the S of described second switch pipe respectively
Pole, the other end of a described LC resonant element inductance connects a described LC resonant element electric capacity
One pole plate, another pole plate of a described LC resonant element electric capacity connects the S pole of described first switching tube.
5. circuit of synchronous rectification as claimed in claim 4, it is characterised in that described 2nd LC resonance
Unit includes: the 2nd LC resonant element inductance and the 2nd LC resonant element electric capacity, described 2nd LC
One pole plate of resonant element electric capacity connects one end of a described LC resonant element inductance, described 2nd LC
One end of another pole plate described 2nd LC resonant element inductance of connection of resonant element electric capacity, described second
The other end of LC resonant element inductance connects the former limit of described transformator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620373851.5U CN205622534U (en) | 2016-04-28 | 2016-04-28 | Synchronous rectifier circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620373851.5U CN205622534U (en) | 2016-04-28 | 2016-04-28 | Synchronous rectifier circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205622534U true CN205622534U (en) | 2016-10-05 |
Family
ID=57027369
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620373851.5U Active CN205622534U (en) | 2016-04-28 | 2016-04-28 | Synchronous rectifier circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205622534U (en) |
-
2016
- 2016-04-28 CN CN201620373851.5U patent/CN205622534U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104578345B (en) | Electromagnetic resonance type wireless charging device and control method based on CLL resonant transformation | |
| CN101527520B (en) | Single-stage single-phase AC-DC convertor based on LLC series resonance | |
| CN104124874B (en) | Ultrahigh-frequency isolating resonant converter | |
| CN201365204Y (en) | Single-stage and single-phase AC-DC converter based on LLC series resonance | |
| CN106936319A (en) | A kind of two-way DC DC converters in the port of isolated form three | |
| CN103986330A (en) | Resonance boost DC/DC converter and control method thereof suitable for high-voltage and high-power occasions | |
| CN205725447U (en) | Staggered totem pillar non-bridge PFC circuits based on GAN | |
| CN106452041A (en) | Power supply circuit for AC-DC switching power supply and achieving high-voltage rapid start through PowerMOS pipe | |
| CN204304823U (en) | Based on the synchronous rectification soft switch transducer that phase-shifting full-bridge controls | |
| CN206575329U (en) | A kind of BUCK converter circuits | |
| CN106961220A (en) | A kind of efficient LLC resonant converter in parallel with equal properties of flow | |
| CN203562976U (en) | Vehicle-mounted power supply circuit | |
| CN103427660A (en) | Double-winding coupling inductance voltage-multiplying type single-switching-tube high-gain converter | |
| CN203434870U (en) | Two-winding coupling inductor voltage-multiplying single switch tube high-gain converter | |
| CN205622534U (en) | Synchronous rectifier circuit | |
| CN102170232B (en) | Self-driven active buffer and flyback switching mode power supply | |
| CN105978322A (en) | Switch capacitor type high-gain quasi Z source DC-DC converter | |
| CN203504406U (en) | Bidirectional direct/alternating voltage conversion device | |
| CN206620056U (en) | A kind of LLC DC converters of self-driving type synchronous rectification | |
| CN201839206U (en) | Improved alternating current and direct current switching power supply circuit structure | |
| CN213185891U (en) | Full-load soft-switching BUCK converter and equipment | |
| CN203883678U (en) | Full-bridge DC-DC converter | |
| CN208324952U (en) | A kind of V2G radio energy two-way transmission apparatus | |
| CN106452088B (en) | A kind of isolation type bidirectional DC-DC converting means and its control method | |
| CN206237309U (en) | A kind of satellite high efficiency soft switching power converter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |