CN207884505U - A kind of AC DC conversion equipment - Google Patents
A kind of AC DC conversion equipment Download PDFInfo
- Publication number
- CN207884505U CN207884505U CN201820150035.7U CN201820150035U CN207884505U CN 207884505 U CN207884505 U CN 207884505U CN 201820150035 U CN201820150035 U CN 201820150035U CN 207884505 U CN207884505 U CN 207884505U
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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 is related to a kind of AC DC conversion equipments comprising：Input rectification circuit, transformer, main switch, quasi-resonance control circuit and output regulator rectifier circuit；The input rectification circuit, the AC power rectification for that will input are direct current electricity output；The transformer, the DC power supply for receiving input rectification circuit output, and the DC voltage after transformation is exported under the control of quasi-resonance control circuit；The main switch is gallium nitride switching tube, is electrically connected between the quasi-resonance control circuit and the transformer；The quasi-resonance control circuit uses inverse-excitation type quasi-resonance topological structure, the output for controlling the transformer by the main switch；The output regulator rectifier circuit after the DC voltage for being exported to the transformer carries out voltage stabilizing and rectification, provides workable DC voltage electron equipment.Due to improving the working efficiency of transformer using inverse-excitation type resonant control circuit and gallium nitride switching tube, and then reach the purpose for reducing volume.
Description
【Technical field】
The utility model is related to power supply electronic technical field more particularly to a kind of AC DC conversion equipments.
【Background technology】
With popularizing for portable electronic product, the volume of power supply adaptor and charger is smaller and smaller to become as development
Gesture.It is essentially all the transformer of flyback topologies at present for low power AC/DC (AC DC conversion) device.
It, can be by improving flyback topologies structure if wanting to reduce the volume of AC/DC (AC DC conversion) device
The mode of the working frequency of transformer is realized.But due to being equivalent to energy storage inductor when the transformer of flyback topologies works,
The raising of frequency receives certain restrictions.Therefore, the AC/DC devices of the transformer using this flyback topologies structure are also just hindered
Further reduce volume.
【Utility model content】
The technical problem to be solved by the present invention is to provide a kind of AC DC conversion equipments of small volume.
In order to solve the above technical problems, the utility model provides following technical scheme：
The utility model provides a kind of AC DC conversion equipment comprising：Input rectification circuit, transformer, main switch
Pipe, quasi-resonance control circuit and output regulator rectifier circuit；The input rectification circuit, the AC power rectification for that will input
For direct current electricity output；The transformer, the DC power supply for receiving input rectification circuit output, and in quasi-resonance control circuit
Control under output transformation after DC voltage；The main switch is gallium nitride switching tube, is electrically connected to quasi-resonance control electricity
Between road and the transformer；The quasi-resonance control circuit uses inverse-excitation type quasi-resonance topological structure, for passing through the main switch
Control the output of the transformer；The output regulator rectifier circuit, the DC voltage for export to the transformer carry out voltage stabilizing with
After rectification, workable DC voltage electron equipment is provided.
In some embodiments, which also can receive the output electricity of output regulator rectifier circuit feedback
Pressure, and according to the output of the output voltage control of the feedback transformer.
In some embodiments, which further includes：Accumulator；The accumulator is electrically connected to this
Between input rectification circuit and the transformer.
In some embodiments, which uses bridge rectifier, is single by the AC rectification of input
To pulsating nature direct current.
In some embodiments, which is：Any one in charger, adapter, mobile power.
The beneficial effects of the utility model are that using inverse-excitation type resonant control circuit control transformer works, together
Shi Caiyong very low gallium nitride switching tubes of working loss in high frequency improve the working efficiency of transformer, the as a result, friendship as a result,
The smaller transformer of volume may be used in stream current/direct-current conversion device, to achieve the purpose that reduce volume.
【Description of the drawings】
A kind of AC DC conversion equipment that Fig. 1 specific embodiments of the present invention provide
A kind of AC DC conversion equipment that another specific implementation mode of Fig. 2 the utility model provides
【Specific implementation mode】
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only explaining this
Utility model is not used to limit the utility model.But the utility model can be realized in many different forms, and
It is not limited to embodiment described herein.Make in the disclosure to the utility model on the contrary, purpose of providing these embodiments is
The understanding of appearance is more thorough and comprehensive.
Unless otherwise defined, all technical and scientific terms practical this paper are led with the technology for belonging to the utility model
The normally understood meaning of technical staff in domain is identical.Terminology used in the description of the utility model herein only be
The purpose of description specific embodiment, it is not intended that limitation the utility model.Term as used herein "and/or" includes one
Any and all combinations of a or multiple relevant Listed Items；Term as used herein " connection ", if it is circuit
Or the connection between electronic component, including be directly electrically connected or communicate to connect between circuit or electronic component, also include circuit
Or pass through other circuits or electronic component, the indirect electrical connection of realization between electronic component.
Please refer to Fig. 1, a kind of AC DC conversion equipment that specific embodiment of the present invention provides.The AC DC
Conversion equipment includes：Input rectification circuit 10, transformer 20, main switch 30, quasi-resonance control circuit 40 and output rectification
With regulator circuit 60.Specifically, the AC DC conversion equipment that specific embodiment of the present utility model is provided include but
It is not limited to the electronic devices such as charger, adapter, mobile power.
The input rectification circuit 10, the AC power rectification for that will input are direct current electricity output；Specifically, the input is whole
Bridge rectifier may be used in current circuit 10, is unidirectional pulsating nature direct current by the AC rectification of input；
The transformer 20, the DC power supply for receiving the input rectification circuit 10 output, and to the main switch 30
Output power exports after doing transformation processing to the output regulator rectifier circuit 50；
The main switch 30 is gallium nitride switching tube, be electrically connected to the quasi-resonance control circuit 40 and the transformer 20 it
Between；
The quasi-resonance control circuit 40 uses inverse-excitation type quasi-resonance topological structure, the output for controlling the main switch 30
Power；
The output regulator rectifier circuit 50, after the DC voltage for being exported to the transformer 20 carries out voltage stabilizing and rectification,
Workable DC voltage electron equipment is provided.Meanwhile the output regulator rectifier circuit 50 be additionally operable to acquisition output voltage and
When feed back to the resonant control circuit 40, control in time the main switch 30 work and output energy, to ensure the normal work of circuit
Make.
Optimization, which also can receive the output voltage of the output regulator rectifier circuit 50 feedback,
And it is further used for the output according to the output voltage control of feedback transformer 20.
Optimization, as shown in Fig. 2, in another specific implementation mode of the utility model, the AC DC conversion equipment
Can also include：Accumulator 60.The accumulator 60 is electrically connected between the input rectification circuit 10 and the transformer 20.It should
The direct current that input rectification circuit 10 exports is supplied to the transformer 20 to carry out transformation processing after the accumulator 60.
The utility model is specifically that embodiment is worked using inverse-excitation type resonant control circuit control transformer, together
Shi Caiyong very low gallium nitride switching tubes of working loss in high frequency improve the working efficiency of transformer, the as a result, friendship as a result,
The smaller transformer of volume may be used in stream current/direct-current conversion device, to achieve the purpose that reduce volume.
Above-mentioned specific implementation mode illustrates but is not intended to limit the utility model, and those skilled in the art can be in claim
In the range of design it is multiple replace example.Those skilled in the art should be appreciated that being violated as appended no
Within the scope of the utility model as defined in the claims, specific implementation can be made it is appropriate adjustment, modification etc..
Therefore, all according to the spirit and principles of the utility model, the arbitrary modifications and variations done are determined in the appended claims
Within the scope of the utility model of justice.
Claims (5)
1. a kind of AC DC conversion equipment, which is characterized in that the AC DC conversion equipment includes：Input rectification circuit, change
Depressor, main switch, quasi-resonance control circuit and output regulator rectifier circuit；
The input rectification circuit, the AC power rectification for that will input are direct current electricity output；
The transformer, the DC power supply for receiving input rectification circuit output, and the output power of the main switch is done
It is exported to the output regulator rectifier circuit after transformation processing；
The main switch is gallium nitride switching tube, is electrically connected between the quasi-resonance control circuit and the transformer；
The quasi-resonance control circuit uses inverse-excitation type quasi-resonance topological structure, the output power for controlling the main switch；
The output regulator rectifier circuit, after the DC voltage for being exported to the transformer carries out voltage stabilizing and rectification, providing can make
DC voltage electron equipment.
2. AC DC conversion equipment as described in claim 1, which is characterized in that the quasi-resonance control circuit also can receive should
The output voltage of regulator rectifier circuit feedback is exported, and according to the output of the output voltage control of the feedback transformer.
3. AC DC conversion equipment as described in claim 1, which is characterized in that the AC DC conversion equipment further includes：
Accumulator；The accumulator is electrically connected between the input rectification circuit and the transformer.
4. AC DC conversion equipment as described in claim 1, which is characterized in that the input rectification circuit uses bridge rectifier
The AC rectification of input is unidirectional pulsating nature direct current by circuit.
5. AC DC conversion equipment as described in claim 1, which is characterized in that the AC DC conversion equipment is：Charging
Any one in device, adapter, mobile power.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820150035.7U CN207884505U (en) | 2018-01-29 | 2018-01-29 | A kind of AC DC conversion equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820150035.7U CN207884505U (en) | 2018-01-29 | 2018-01-29 | A kind of AC DC conversion equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207884505U true CN207884505U (en) | 2018-09-18 |
Family
ID=63508982
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820150035.7U Active CN207884505U (en) | 2018-01-29 | 2018-01-29 | A kind of AC DC conversion equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207884505U (en) |
-
2018
- 2018-01-29 CN CN201820150035.7U patent/CN207884505U/en active Active
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