CN206775382U - A kind of resonance snubber circuit - Google Patents
A kind of resonance snubber circuit Download PDFInfo
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- CN206775382U CN206775382U CN201720546957.5U CN201720546957U CN206775382U CN 206775382 U CN206775382 U CN 206775382U CN 201720546957 U CN201720546957 U CN 201720546957U CN 206775382 U CN206775382 U CN 206775382U
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Abstract
The utility model discloses a kind of resonance snubber circuit, including inductance L1, inductance L2, diode D1, metal-oxide-semiconductor Q1, electric capacity C1, electric capacity C2 and diode D2, inductance L1 one end connection power supply V1, the inductance L1 other ends connect inductance L2 respectively, electric capacity C1 and diode D4 positive poles, diode D4 negative poles connect diode D3 negative poles respectively, electric capacity C4, electric capacity C3 and output end vo, diode D3 positive poles connect the electric capacity C1 other ends and diode D2 negative poles respectively, diode D2 positive poles connect diode D1 negative poles and electric capacity C2 respectively, diode D1 positive poles connect the inductance L2 other ends and metal-oxide-semiconductor Q1 D poles respectively, metal-oxide-semiconductor Q1 G poles connection signal V2.The utility model is made Q1 realize zero current turning-on and zero voltage turn-off, is improved the operating efficiency of power supply, and relative to other resonance snubber circuits, reduce production cost using passive elements such as inductance L1.
Description
Technical field
The present invention relates to a kind of buffer module circuit, specifically a kind of resonance snubber circuit.
Background technology
For traditional AC/DC full-wave rectifying circuits using rectification+capacitor filter, this circuit is a kind of non-linear
The combination of device and energy-storage travelling wave tube, the waveform of input ac voltage is sinusoidal, but after rectified bridge rectification input current ripple
For shape there occurs serious distortion, in pulse type, resulting harmonic current has damaging effect to power network, makes power input power
Factor declines.
Modular circuit of the present invention this circuit unlike in general pfc circuit has selected Lossless Snubber buffer network, drop
Low switching tube Q1 switching loss, improves its stability, enhances its service life, using passive elements such as inductance L1,
Q1 is realized zero current turning-on and zero voltage turn-off, improve the operating efficiency of power supply, and buffer and inhale relative to other resonance
Circuit is received, reduces production cost.
The content of the invention
It is an object of the invention to provide a kind of resonance snubber circuit, is asked with solve to propose in above-mentioned background technology
Topic.
To achieve the above object, the present invention provides following technical scheme：
A kind of resonance snubber circuit, including inductance L1, inductance L2, diode D1, metal-oxide-semiconductor Q1, electric capacity C1, electric capacity C2
With diode D2, described inductance L1 one end connects power supply V1, and the inductance L1 other ends connect inductance L2, electric capacity C1 and diode respectively
D4 positive poles, diode D4 negative poles connect diode D3 negative poles, electric capacity C4, electric capacity C3 and output end vo, diode D3 positive poles respectively
Connect the electric capacity C1 other ends respectively and diode D2 negative poles, diode D2 positive poles connect diode D1 negative poles and electric capacity C2 respectively,
Diode D1 positive poles connect the inductance L2 other ends and metal-oxide-semiconductor Q1 D poles, metal-oxide-semiconductor the Q1 connection of G poles signal V2, metal-oxide-semiconductor Q1 respectively
S poles connect the electric capacity C2 other ends, the electric capacity C3 other ends and the electric capacity C4 other ends respectively and be grounded.
As further scheme of the invention：The metal-oxide-semiconductor Q1 uses NMOS tube.
Compared with prior art, the beneficial effects of the invention are as follows：The present invention realizes Q1 using passive elements such as inductance L1
Zero current turning-on and zero voltage turn-off, the operating efficiency of power supply is improved, and relative to other resonance snubber circuits, drop
Low production cost.
Brief description of the drawings
Fig. 1 is the circuit diagram of resonance snubber circuit.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes.
Referring to Fig. 1, in the embodiment of the present invention, a kind of resonance snubber circuit, including inductance L1, inductance L2, two poles
Pipe D1, metal-oxide-semiconductor Q1, electric capacity C1, electric capacity C2 and diode D2, described inductance L1 one end connect power supply V1, the inductance L1 other ends point
Not Lian Jie inductance L2, electric capacity C1 and diode D4 positive poles, diode D4 negative poles connect diode D3 negative poles, electric capacity C4, electricity respectively
Hold C3 and output end vo, diode D3 positive poles connect the electric capacity C1 other ends and diode D2 negative poles, diode D2 positive poles point respectively
Not Lian Jie diode D1 negative poles and electric capacity C2, diode D1 positive poles connect the inductance L2 other ends and metal-oxide-semiconductor Q1 D poles, MOS respectively
It is another that pipe the Q1 connection of G poles signal V2, metal-oxide-semiconductor Q1 S poles connect the electric capacity C2 other ends, the electric capacity C3 other ends and electric capacity C4 respectively
Hold and be grounded；The metal-oxide-semiconductor Q1 uses NMOS tube.
V1 is obtained pulsed current signal after the rectified bridge rectification of AC alternating currents, when input signal V2 turns on Q1,
Because electric current can not be mutated in inductance L2, and C2, C1 voltage can not be mutated, and the electric current in Q1 is started from scratch increase, slowly on
Rise, Q1 realizes zero current turning-on by D4 electric current iD4 decrescence, and the loss of conducting is smaller.
When electric current iD4 is reduced to zero, D4 enters Reverse recovery state, by inductance L2 electric current iL2=iL1+irD4,
D4 reverse currents irD4 rate of change is controlled by inductance L2, and reverse recovery loss reduces.Electric current slowly increases in main inductance L2
Add, the voltage uQ on Q1 declines.Electric capacity C2 is discharged by D2, C1, L2, Q1, and the voltage uC2 on C2 declines.When uC2 drops to zero
When, the energy in C2 turns to C1, L2 completely.Current saturation in L2 is constant, and uQ declines vanishing, and Q1 completes zero current turning-on mistake
Journey.When Q1 is turned off, electric current iL2 in L2 flows to C2 by D1, and C2 starts from scratch charging, and Q1 realizes zero voltage turn-off, and shut-off is damaged
Consumption is smaller.Diode D2, D3 make the final clampers of uC2 in output voltage VL.The energy that L2 stores in conducting is flowed to by D1, D2
C1, L2 gradually reset.After L2 resets, the energy in C1 is exported by D3.When C1 both end voltage vanishing, the positive guides of D4
Logical, Q1 completes zero voltage turn-off process.Q1 is held off until initially entering new switching cycles.
In summary, the present invention utilizes the passive elements such as inductance L1, Q1 is realized zero current turning-on and zero voltage turn-off,
The operating efficiency of power supply is improved, and relative to other resonance snubber circuits, reduces production cost.
Claims (2)
1. a kind of resonance snubber circuit, including inductance L1, inductance L2, diode D1, metal-oxide-semiconductor Q1, electric capacity C1, electric capacity C2 and
Diode D2, it is characterised in that described inductance L1 one end connects power supply V1, and the inductance L1 other ends connect inductance L2, electric capacity respectively
C1 and diode D4 positive poles, diode D4 negative poles connect diode D3 negative poles, electric capacity C4, electric capacity C3 and output end vo respectively, and two
Pole pipe D3 positive poles connect the electric capacity C1 other ends and diode D2 negative poles respectively, and diode D2 positive poles connect diode D1 negative poles respectively
With electric capacity C2, diode D1 positive poles connect the inductance L2 other ends and metal-oxide-semiconductor Q1 D poles, metal-oxide-semiconductor Q1 G poles connection signal respectively
V2, metal-oxide-semiconductor Q1 S poles connect the electric capacity C2 other ends, the electric capacity C3 other ends and the electric capacity C4 other ends and are grounded respectively.
2. resonance snubber circuit according to claim 1, it is characterised in that the metal-oxide-semiconductor Q1 uses NMOS tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720546957.5U CN206775382U (en) | 2017-05-03 | 2017-05-03 | A kind of resonance snubber circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720546957.5U CN206775382U (en) | 2017-05-03 | 2017-05-03 | A kind of resonance snubber circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206775382U true CN206775382U (en) | 2017-12-19 |
Family
ID=60641205
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720546957.5U Expired - Fee Related CN206775382U (en) | 2017-05-03 | 2017-05-03 | A kind of resonance snubber circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206775382U (en) |
-
2017
- 2017-05-03 CN CN201720546957.5U patent/CN206775382U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| 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: 20171219 Termination date: 20180503 |