CN106253704B - Power supply device with active clamping circuit - Google Patents
Power supply device with active clamping circuit Download PDFInfo
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- CN106253704B CN106253704B CN201510308845.1A CN201510308845A CN106253704B CN 106253704 B CN106253704 B CN 106253704B CN 201510308845 A CN201510308845 A CN 201510308845A CN 106253704 B CN106253704 B CN 106253704B
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Abstract
The invention discloses a kind of power supply devices with active clamping circuit, include a power supply circuit and an active clamping circuit.The power supply circuit includes a primary side rectification unit and a voltage output end.The active clamping circuit includes a clamp energy-storage units, a feedback control unit and a synchronous buck converter.The clamp energy-storage units clamp and store a due to voltage spikes to obtain a tank voltage；The feedback control unit detects the tank voltage and notifies the synchronous buck converter tank voltage；When the tank voltage is greater than a predeterminated voltage, which receives the tank voltage and adjusts the tank voltage to obtain an adjustment voltage；The synchronous buck converter transmits the adjustment voltage to the voltage output end.
Description
Technical field
The present invention supplies dress about a kind of power supply device, especially a kind of power supply with active clamping circuit
It sets.
Background technique
Power supply device is a kind of common electronic device；Power supply device provides power supply and gives load device, uses
Drive load device；Therefore, power supply device is very important.
When power supply device running when, be easy to produce due to voltage spikes (voltage spike).Current existing power supply
The shortcomings that feeding mechanism are as follows: the diode of the secondary side rectifier unit of power supply device is easy to damage because of due to voltage spikes,
And the energy of due to voltage spikes is not reused.
Summary of the invention
The shortcomings that improve the above-mentioned prior art, the purpose of the present invention is to provide one kind to have low-loss active clamping
The power supply device of circuit.
To reach above-mentioned purpose of the invention, the power supply device with active clamping circuit of the invention includes: one
Power supply circuit；And an active clamping circuit, the active clamping circuit are electrically connected to the power supply circuit.The wherein electricity
Source supply circuit includes: a primary side rectification unit, which is electrically connected to the active clamping circuit；And one
Voltage output end, the voltage output end are electrically connected to the active clamping circuit and the secondary side rectifier unit.The wherein active
Clamp circuit includes: a clamp energy-storage units, the clamp energy-storage units are electrically connected to the secondary side rectifier unit；One feedback control
Unit processed, the feedback control unit are electrically connected to the clamp energy-storage units；And a synchronous buck converter, the synchronous buck turn
Parallel operation is electrically connected to the clamp energy-storage units, the feedback control unit and the voltage output end.The wherein clamp energy-storage units
It clamps and stores a due to voltage spikes to obtain a tank voltage；The feedback control unit detects the tank voltage and notifies the synchronization
The buck converter tank voltage；When the tank voltage is greater than a predeterminated voltage, which receives the energy storage
Voltage simultaneously adjusts the tank voltage to obtain an adjustment voltage；It is defeated to the voltage that the synchronous buck converter transmits the adjustment voltage
Outlet.
Effect of the invention is the diode of the secondary side rectifier unit of protection power source feeding mechanism from due to voltage spikes
Infringement, and using active clamping circuit conversion due to voltage spikes energy become recycling output end voltage energy.
Detailed description of the invention
Fig. 1 is the power supply device block diagram with active clamping circuit of the invention.
Fig. 2 is feedback control unit block diagram of the invention.
Fig. 3 is synchronous buck converter block diagram of the invention.
Fig. 4 is another embodiment of power supply device block diagram with active clamping circuit of the invention.
Wherein, appended drawing reference:
Power supply device 10 with active clamping circuit
Power supply circuit 20
Active clamping circuit 30
Secondary side rectifier unit 202
Voltage output end 204
Output capacitor 206
Output end inductance 208
Transformer 210
Primary side voltage processing circuit 212
Clamp energy-storage units 302
Feedback control unit 304
Synchronous buck converter 306
First diode 20202
Second diode 20204
First synchronous rectification switch 20206
Second synchronous rectification switch 20208
Third diode 30202
4th diode 30204
Storage capacitor 30206
First resistor 30402
Second resistance 30404
Three ends can adjust voltage-stablizer 30406
3rd resistor 30408
DC voltage source 30410
4th resistance 30412
5th resistance 30414
6th resistance 30416
7th resistance 30418
Control unit 30602
First switch unit 30604
Second switch unit 30606
Inductance 30608
Capacitor 30610
Diode 30612
Specific embodiment
Detailed description for the present invention and technology contents please refer to detailed description and accompanying drawings below and are described as follows, and
Attached drawing and detailed description as illustrative purposes only, are not intended to limit the present invention.
Referring to FIG. 1, it is the power supply device block diagram with active clamping circuit of the invention.One has actively
The power supply device 10 of clamp circuit includes a power supply circuit 20 and an active clamping circuit 30；The power supply circuit
20 include a primary side rectification unit 202, a voltage output end 204, an output capacitor 206, an output end inductance 208, one
Transformer 210 and a primary side voltage processing circuit 212；The active clamping circuit 30 includes that a clamp energy-storage units 302, one are anti-
Present control unit 304 and a synchronous buck converter 306；The secondary side rectifier unit 202 include a first diode 20202 and
One second diode 20204；The clamp energy-storage units 302 include a third diode 30202, one the 4th diode 30204 and
One storage capacitor 30206.
The active clamping circuit 30 is electrically connected to the power supply circuit 20；The secondary side rectifier unit 202 electrically connects
It is connected to the active clamping circuit 30；The voltage output end 204 is electrically connected to the active clamping circuit 30 and the secondary side rectifier
Unit 202；The output capacitor 206 is electrically connected to the voltage output end 204；The output end inductance 208 is electrically connected to this
Voltage output end 204；The transformer 210 is electrically connected to the first diode 20202, second diode 20204, the third
Diode 30202, the 4th diode 30204 and the output end inductance 208；The primary side voltage processing circuit 212 electrically connects
It is connected to the transformer 210；The first diode 20202 is electrically connected to the clamp energy-storage units 302；Second diode
20204 are electrically connected to the clamp energy-storage units 302.
The clamp energy-storage units 302 are electrically connected to the secondary side rectifier unit 202；The feedback control unit 304 is electrically
It is connected to the clamp energy-storage units 302；The synchronous buck converter 306 is electrically connected to the clamp energy-storage units 302, the feedback
Control unit 304 and the voltage output end 204；The third diode 30202 is electrically connected to the first diode 20202, is somebody's turn to do
Feedback control unit 304 and the synchronous buck converter 306；4th diode 30204 is electrically connected to second diode
20204, the third diode 30202, the feedback control unit 304 and the synchronous buck converter 306；The storage capacitor
30206 are electrically connected to the third diode 30202, the 4th diode 30204, the feedback control unit 304 and the synchronization
Buck converter 306.
The clamp energy-storage units 302 clamp and store a due to voltage spikes (voltage spike) to obtain a tank voltage；
The feedback control unit 304 detects the tank voltage and notifies the synchronous buck converter 306 tank voltage；When energy storage electricity
When pressure is greater than a predeterminated voltage, which receives the tank voltage and adjusts the tank voltage to obtain one
Adjust voltage；The synchronous buck converter 306 transmits the adjustment voltage to the voltage output end 204.
Referring to FIG. 2, it is feedback control unit block diagram of the invention.The feedback control unit 304 includes one first
Resistance 30402, a second resistance 30404, one or three ends can adjust voltage-stablizer 30406, a 3rd resistor 30408, a DC voltage
Source 30410, one the 4th resistance 30412, one the 5th resistance 30414, one the 6th resistance 30416 and one the 7th resistance 30418.
The first resistor 30402 is electrically connected to the clamp energy-storage units 302 and the synchronous buck converter 306；This
Two resistance 30404 are electrically connected to the first resistor 30402；Three end can adjust voltage-stablizer 30406 be electrically connected to this first
Resistance 30402 and the second resistance 30404；The 3rd resistor 30408, which is electrically connected to three end, can adjust voltage-stablizer 30406；
The DC voltage source 30410 is electrically connected to the 3rd resistor 30408；4th resistance 30412 is electrically connected to three end can
Adjust voltage-stablizer 30406 and the 3rd resistor 30408；5th resistance 30414 be electrically connected to the DC voltage source 30410 and
4th resistance 30412；6th resistance 30416 is electrically connected to the 4th resistance 30412, the 5th resistance 30414 and is somebody's turn to do
Synchronous buck converter 306；7th resistance 30418 is electrically connected to the 6th resistance 30416 and the synchronous buck converter
306。
Referring to FIG. 3, it is synchronous buck converter block diagram of the invention.The synchronous buck converter 306 includes one
Control unit 30602, a first switch unit 30604, a second switch unit 30606, an inductance 30608, a capacitor 30610
An and diode 30612.
The control unit 30602 is electrically connected to the feedback control unit 304；The first switch unit 30604 electrically connects
It is connected to the control unit 30602, the clamp energy-storage units 302 and the feedback control unit 304；The second switch unit 30606
It is electrically connected to the control unit 30602 and the first switch unit 30604；The inductance 30608 is electrically connected to this and first opens
Close unit 30604 and the second switch unit 30606；The capacitor 30610 is electrically connected to the inductance 30608；The diode
30612 are electrically connected to the inductance 30608, the capacitor 30610 and the voltage output end 204.
It please also refer to Fig. 1, Fig. 2 and Fig. 3.When the due to voltage spikes generates, the first diode 20202 and the two or two
Pole pipe 20204 is easily damaged.The clamp energy-storage units 302 clamp and store the due to voltage spikes in the storage capacitor 30206 to obtain
To the tank voltage；The feedback control unit 304 detects the tank voltage and notifies the energy storage electricity of synchronous buck converter 306
Pressure；When the tank voltage is greater than predeterminated voltage (such as 43 volts), which transmits one first feedback letter
Number (such as 0.68 volt) to the control unit 30602 so that the synchronous buck converter 306 receive the tank voltage and by
The first switch unit 30604, the second switch unit 30606, the inductance 30608 and the capacitor 30610 adjust energy storage electricity
Pressure is to obtain the adjustment voltage；The synchronous buck converter 306 transmits the adjustment voltage to the voltage by the diode 30612
Output end 204.
When the tank voltage is not more than the predeterminated voltage, which transmits one second feedback signal (example
Such as 1.1 volts) to the control unit 30602 so that 30602 stop operation of the control unit first switch unit 30604 and
The second switch unit 30606.
In a specific embodiment, which has a critical voltage (such as 0.8 volt).When the feedback control
When unit 304 processed transmits the first feedback signal (such as 0.68 volt) to the control unit 30602, the control unit 30602
Determine first feedback signal be less than the critical voltage so that the control unit 30602 manipulate the first switch unit 30604 and
The second switch unit 30606 carries out switching movement；When the feedback control unit 304 transmits the second feedback signal (example
Such as 1.1 volts) to the control unit 30602 when, which determines that second feedback signal is not less than the critical electricity
Pressure, so that 30602 stop operation of the control unit first switch unit 30604 and the second switch unit 30606 are opened
Close switching action.
Referring to FIG. 4, it is another embodiment of power supply device block diagram with active clamping circuit of the invention；
Fig. 4 content is largely consistent with Fig. 1, and something in common repeats no more, Fig. 4 and Fig. 1 difference be the first diode 20202 and
Second diode 20204 is changed to one first synchronous rectification switch 20206 and one second synchronous rectification switch 20208, this
One synchronous rectification switch 20206 is electrically connected to the clamp energy-storage units 302, which electrically connects
It is connected to the clamp energy-storage units 302.Wherein, first synchronous rectification switch 20206 and second synchronous rectification switch 20208 can
For metal-oxide half field effect transistor (MOSFET).
Effect of the invention is the diode of the secondary side rectifier unit of protection power source feeding mechanism from due to voltage spikes
Infringement, and using active clamping circuit conversion due to voltage spikes energy become recycling output end voltage energy.
The above, only presently preferred embodiments of the present invention, when cannot limit the scope of implementation of the present invention, i.e. Fan Yibenfa
Equivalent change made by bright claim and modification should still belong to the model that patent covering scope of the invention is intended to protection
Farmland.The present invention can also have other various embodiments, without deviating from the spirit and substance of the present invention, the technology of this field
Personnel make various corresponding changes and modifications in accordance with the present invention, but these corresponding changes and modifications all should belong to this hair
The protection scope of bright the attached claims.Know that the present invention has had industrial applicability, novelty and creation in conclusion working as
Property, and construction of the invention had not also seen similar product and had openly used, and complied fully with application for a patent for invention important document, hence according to special
Sharp method is filed an application.
Claims (5)
1. a kind of power supply device with active clamping circuit, characterized by comprising:
One power supply circuit；And
One active clamping circuit, the active clamping circuit are electrically connected to the power supply circuit,
Wherein the power supply circuit includes:
One primary side rectification unit, the secondary side rectifier unit are electrically connected to the active clamping circuit；And
One voltage output end, the voltage output end are electrically connected to the active clamping circuit and the secondary side rectifier unit,
Wherein the active clamping circuit includes:
One clamp energy-storage units, the clamp energy-storage units are electrically connected to the secondary side rectifier unit；
One feedback control unit, the feedback control unit are electrically connected to the clamp energy-storage units；And
One synchronous buck converter, the synchronous buck converter are electrically connected to the clamp energy-storage units, the feedback control unit
And the voltage output end；
The secondary side rectifier unit includes:
One first diode has an anode tap and a cathode terminal；And
One second diode has an anode tap and a cathode terminal；
The clamp energy-storage units have a first end, a second end and a third end；The anode tap of second diode is electrical
It is connected to the anode tap of the first diode and the third end of the clamp energy-storage units, the cathode terminal of second diode
It is electrically connected to the first end of the clamp energy-storage units, the cathode terminal of the first diode is electrically connected to the clamp energy storage
The second end of unit；The clamp energy-storage units include:
One third diode, has an anode tap and a cathode terminal, and the anode tap of the third diode is the clamp energy storage list
The second end of member, and it is electrically connected to the cathode terminal of the first diode, the cathode terminal of the third diode is the pincers
One the 4th end of position energy-storage units, and it is electrically connected to the feedback control unit and the synchronous buck converter；
One the 4th diode, has an anode tap and a cathode terminal, and the anode tap of the 4th diode is the clamp energy storage list
The first end of member, and it is electrically connected to the cathode terminal of second diode, the cathode terminal of the 4th diode electrically connects
It is connected to the 4th end；And
One storage capacitor has a first end and a second end, and the first end of the storage capacitor is electrically connected to the 4th end,
The second end of the storage capacitor is the third end of the clamp energy-storage units, and is electrically connected to the sun of the first diode
Extremely with the anode tap of second diode；
The feedback control unit includes:
One first resistor, has a first end and a second end, and the first end of the first resistor is electrically connected to clamp storage
Can the cathode terminal of the third diode of unit, the 4th diode the cathode terminal and the synchronous buck converter；
One second resistance, has a first end and a second end, and the first end of the second resistance is electrically connected to first electricity
The second end of resistance；
One or three ends can adjust voltage-stablizer, have a first end, a second end and a control terminal, which can adjust being somebody's turn to do for voltage-stablizer
Control terminal is electrically connected to the second end of the first resistor and the first end of the second resistance, which can adjust voltage-stablizer
The second end be electrically connected to the second end of the second resistance；And
One 3rd resistor has a first end and a second end, and it is adjustable that the second end of the 3rd resistor is electrically connected to three end
The first end of whole voltage-stablizer；
One DC voltage source, the DC voltage source are electrically connected to the first end of the 3rd resistor；
One the 4th resistance has a first end and a second end, and the second end of the 4th resistance is electrically connected to three end can
Adjust the first end of voltage-stablizer and the second end of the 3rd resistor；
One the 5th resistance, has a first end and a second end, and the first end of the 5th resistance is electrically connected to the direct current
The second end of potential source, the 5th resistance is electrically connected to the first end of the 4th resistance；
One the 6th resistance, has a first end and a second end, and the first end of the 6th resistance is electrically connected to the 4th electricity
The first end, second end of the 5th resistance of resistance, the second end of the 6th resistance are electrically connected to the synchronous buck and turn
Parallel operation；And
One the 7th resistance, has a first end and a second end, and the first end of the 7th resistance is electrically connected to the 6th electricity
Second end and the synchronous buck converter of resistance, the second end of the 7th resistance, which is electrically connected to three end, can adjust pressure stabilizing
The second end of device；
Wherein the clamp energy-storage units clamp and store a due to voltage spikes to obtain a tank voltage；Feedback control unit detection
The tank voltage, and the tank voltage is notified into the synchronous buck converter；When the tank voltage is greater than a predeterminated voltage,
The synchronous buck converter receives the tank voltage and adjusts the tank voltage to obtain an adjustment voltage；Synchronous buck conversion
Device transmits the adjustment voltage to the voltage output end.
2. as described in claim 1 with the power supply device of active clamping circuit, which is characterized in that the synchronous buck turns
Parallel operation includes:
One control unit, the control unit be electrically connected to the 6th resistance the second end and the 7th resistance this first
End；
One first switch unit, the first switch unit be electrically connected to the control unit, the third diode the cathode terminal,
The first end of the first resistor of cathode terminal and feedback control unit of the 4th diode；
One second switch unit, the second switch unit are electrically connected to the control unit and the first switch unit；
One inductance, has a first end and a second end, the first end of the inductance be electrically connected to the first switch unit and
The second switch unit；
One capacitor has a first end and a second end, and the first end of the capacitor is electrically connected to the second end of the inductance,
The second end of the capacitor is electrically connected to the second switch unit；And
One diode, has an anode tap and a cathode terminal, the anode tap of the diode be electrically connected to the inductance this
Two ends, the capacitor the first end, the cathode terminal of the diode is electrically connected to the voltage output end.
3. as claimed in claim 2 with the power supply device of active clamping circuit, which is characterized in that power supply supply electricity
Road also includes:
One output capacitor, has a first end and a second end, and the first end of the output capacitor is electrically connected to the electricity
Output end is pressed, the second end of the output capacitor is electrically connected to the second end of the storage capacitor, the first diode
The anode tap of the anode tap and second diode；
One output end inductance, has a first end and a second end, and the second end of the output end inductance is electrically connected to the electricity
Press output end；
One transformer, has a primary side and a primary side, which has a first end, a second end and a centre tap
End, the first end are electrically connected to the cathode terminal of the first diode and the anode tap of the third diode, the second end
It is electrically connected to the cathode terminal of second diode and the anode tap of the 4th diode and the centre tap end is electrical
It is connected to the first end of the output end inductance；And
One primary side voltage processing circuit, the primary side voltage processing circuit are electrically connected to the primary side of the transformer.
4. a kind of power supply device with active clamping circuit, characterized by comprising:
One power supply circuit；And
One active clamping circuit, the active clamping circuit are electrically connected to the power supply circuit,
Wherein the power supply circuit includes:
One primary side rectification unit, the secondary side rectifier unit are electrically connected to the active clamping circuit；And
One voltage output end, the voltage output end are electrically connected to the active clamping circuit and the secondary side rectifier unit,
Wherein the active clamping circuit includes:
One clamp energy-storage units, the clamp energy-storage units are electrically connected to the secondary side rectifier unit；
One feedback control unit, the feedback control unit are electrically connected to the clamp energy-storage units；And
One synchronous buck converter, the synchronous buck converter are electrically connected to the clamp energy-storage units, the feedback control unit
And the voltage output end；
The secondary side rectifier unit includes:
One first synchronous rectification switch has a first end and a second end；And
One second synchronous rectification switch has a first end and a second end；
Wherein, which has a first end, a second end and a third end；First synchronous rectification switch is somebody's turn to do
Second end is electrically connected to the second end of second synchronous rectification switch and the third end of the clamp energy-storage units, this first
The first end of synchronous rectification switch is electrically connected to the second end of the clamp energy-storage units, second synchronous rectification switch
The first end is electrically connected to the first end of clamp energy-storage units clamp energy-storage units:
One third diode, has an anode tap and a cathode terminal, and the anode tap of the third diode is the clamp energy storage list
The second end of member, and it is electrically connected to the first end of first synchronous rectification switch, the cathode terminal of the third diode
For one the 4th end of the clamp energy-storage units, and it is electrically connected to the feedback control unit and the synchronous buck converter；
One the 4th diode, has an anode tap and a cathode terminal, and the anode tap of the 4th diode is the clamp energy storage list
The first end of member, and it is electrically connected to the first end of second synchronous rectification switch, the cathode terminal of the 4th diode
It is electrically connected to the 4th end；And
One storage capacitor has a first end and a second end, and the first end of the storage capacitor is electrically connected to the 4th end,
The second end of the storage capacitor is the third end of the clamp energy-storage units, and is electrically connected to first synchronous rectification switch
The second end and second synchronous rectification switch the second end；
The feedback control unit includes:
One first resistor, has a first end and a second end, and the first end of the first resistor is electrically connected to clamp storage
Can the cathode terminal of the third diode of unit, the 4th diode the cathode terminal and the synchronous buck converter；
One second resistance, has a first end and a second end, and the first end of the second resistance is electrically connected to first electricity
The second end of resistance；
One or three ends can adjust voltage-stablizer, have a first end, a second end and a control terminal, which can adjust being somebody's turn to do for voltage-stablizer
Control terminal is electrically connected to the second end of the first resistor and the first end of the second resistance, which can adjust voltage-stablizer
The second end be electrically connected to the second end of the second resistance；And
One 3rd resistor has a first end and a second end, and it is adjustable that the second end of the 3rd resistor is electrically connected to three end
The first end of whole voltage-stablizer；
One DC voltage source, the DC voltage source are electrically connected to the first end of the 3rd resistor；
One the 4th resistance has a first end and a second end, and the second end of the 4th resistance is electrically connected to three end can
Adjust the first end of voltage-stablizer and the second end of the 3rd resistor；
One the 5th resistance, has a first end and a second end, and the first end of the 5th resistance is electrically connected to the direct current
The second end of potential source, the 5th resistance is electrically connected to the first end of the 4th resistance；
One the 6th resistance, has a first end and a second end, and the first end of the 6th resistance is electrically connected to the 4th electricity
The first end, second end of the 5th resistance of resistance, the second end of the 6th resistance are electrically connected to the synchronous buck and turn
Parallel operation；And
One the 7th resistance, has a first end and a second end, and the first end of the 7th resistance is electrically connected to the 6th electricity
Second end and the synchronous buck converter of resistance, the second end of the 7th resistance, which is electrically connected to three end, can adjust pressure stabilizing
The second end of device；
Wherein the clamp energy-storage units clamp and store a due to voltage spikes to obtain a tank voltage；Feedback control unit detection
The tank voltage, and the tank voltage is notified into the synchronous buck converter；When the tank voltage is greater than a predeterminated voltage,
The synchronous buck converter receives the tank voltage and adjusts the tank voltage to obtain an adjustment voltage；Synchronous buck conversion
Device transmits the adjustment voltage to the voltage output end.
5. as claimed in claim 4 with active clamping circuit power supply device, which is characterized in that this first synchronize it is whole
Stream switch is a metal-oxide half field effect transistor；Second synchronous rectification switch is a metal-oxide half field effect transistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510308845.1A CN106253704B (en) | 2015-06-08 | 2015-06-08 | Power supply device with active clamping circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510308845.1A CN106253704B (en) | 2015-06-08 | 2015-06-08 | Power supply device with active clamping circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106253704A CN106253704A (en) | 2016-12-21 |
| CN106253704B true CN106253704B (en) | 2019-03-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510308845.1A Active CN106253704B (en) | 2015-06-08 | 2015-06-08 | Power supply device with active clamping circuit |
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| CN (1) | CN106253704B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI652890B (en) * | 2017-07-27 | 2019-03-01 | 群光電能科技股份有限公司 | Power conversion system with clamp mode switching |
| CN111564974A (en) * | 2020-07-15 | 2020-08-21 | 南京力骏新能源储能研究院有限公司 | Active clamping circuit with energy transfer function |
| CN113441880B (en) * | 2021-06-21 | 2023-03-21 | 深圳市佳士科技股份有限公司 | Rectifier diode peak suppression circuit and electric welding equipment |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101272089A (en) * | 2008-04-16 | 2008-09-24 | 伊博电源（杭州）有限公司 | Electric voltage peak absorption circuit of DC converter power switch pipe |
| CN202034908U (en) * | 2011-04-13 | 2011-11-09 | 深圳茂硕电子科技有限公司 | Power supply adopting frequency inversion technology |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103812317B (en) * | 2012-11-14 | 2016-08-24 | 台达电子工业股份有限公司 | Clamp absorbing circuit and impedance control method thereof |
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2015
- 2015-06-08 CN CN201510308845.1A patent/CN106253704B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101272089A (en) * | 2008-04-16 | 2008-09-24 | 伊博电源（杭州）有限公司 | Electric voltage peak absorption circuit of DC converter power switch pipe |
| CN202034908U (en) * | 2011-04-13 | 2011-11-09 | 深圳茂硕电子科技有限公司 | Power supply adopting frequency inversion technology |
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| CN106253704A (en) | 2016-12-21 |
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