CN204046411U - Be applicable to single normal shock absorbing circuit of middle low power modular power source - Google Patents
Be applicable to single normal shock absorbing circuit of middle low power modular power source Download PDFInfo
- Publication number
- CN204046411U CN204046411U CN201420519365.0U CN201420519365U CN204046411U CN 204046411 U CN204046411 U CN 204046411U CN 201420519365 U CN201420519365 U CN 201420519365U CN 204046411 U CN204046411 U CN 204046411U
- Authority
- CN
- China
- Prior art keywords
- applicable
- shock absorbing
- middle low
- low power
- power source
- 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.)
- Expired - Fee Related
Links
Landscapes
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The utility model discloses a kind of single normal shock absorbing circuit being applicable to middle low power modular power source, comprise coil and MOS switching tube, a described coil primary end higfh-tension ceramics electric capacity in parallel, described MOS switching tube leaks level RC circuit by a resistance and capacitances in series in parallel with between source class.The single normal shock absorbing circuit being applicable to middle low power modular power source of the present utility model, by at parallel connection of primary windings higfh-tension ceramics electric capacity, switching tube leaks level upper RC circuit in parallel with between source class can very effective absorption spike, raising whole efficiency and reliability.
Description
Technical field
The utility model is specifically related to a kind of single normal shock absorbing circuit being applicable to middle low power modular power source.
Background technology
All larger current surge and voltage surge will be produced when the break-make of switch and diode reverse recovery.And the most effectual way of current surge adopts zero voltage switch circuit when suppressing switch connection.On the other hand, the voltage surge of the voltage surge that switch disconnects and diode reverse recovery may damage semiconductor element, is also the reason producing noise simultaneously.For this reason, when switch disconnects, just need to adopt absorbing circuit.During diode reverse recovery, identical when voltage surge mechanism of production disconnects with switch, therefore, this absorbing circuit is also applicable to diode circuit.In prior art, the primary coil peak absorbing circuit of most single forward topology, employing be RCD or RC absorb, as depicted in figs. 1 and 2, wherein RCD mode can only absorb energy when switching tube Q1 turns off, and quits work due to the cut-off effect of diode D3 when switching tube is opened; And although RC mode is opened at switching tube Q1, logical time can work, but the energy demand on C3 is discharged by R1, virtually want consumed energy, reduce whole efficiency, R1 also must choose larger power grade with heat radiation simultaneously, relatively high power means and takies large space, and for the modular power source of below 50W small size, this is unallowed.
Utility model content
(1) technical problem that will solve
For solving the problem, the utility model proposes the single normal shock absorbing circuit being applicable to middle low power modular power source that a kind of volume is little, can absorb primary coil spike well.
(2) technical scheme
The single normal shock absorbing circuit being applicable to middle low power modular power source of the present utility model, comprise coil and MOS switching tube, a described coil primary end higfh-tension ceramics electric capacity in parallel, described MOS switching tube leaks level RC circuit by a resistance and capacitances in series in parallel with between source class.
Further, described MOS switching tube grid connects PWM controller, and its drain electrode connects higfh-tension ceramics electric capacity, and its source electrode is by a grounding through resistance.
Further, described coil primary Same Name of Ends is connected to input, and its input is parallel with filter.
Again further, described filter is LC filter circuit.
Further, the secondary Same Name of Ends of described coil is connected to output by an inductance.
(3) beneficial effect
The utility model compared with prior art, it has following beneficial effect: the single normal shock absorbing circuit being applicable to middle low power modular power source of the present utility model, by at parallel connection of primary windings higfh-tension ceramics electric capacity, switching tube leaks level upper RC circuit in parallel with between source class can very effective absorption spike, raising whole efficiency and reliability.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide further understanding of the present utility model, forms a application's part, does not form improper restriction of the present utility model, in the accompanying drawings:
Fig. 1 be the utility model prior art schematic block circuit diagram;
Fig. 2 be the utility model prior art schematic block circuit diagram;
Fig. 3 is schematic block circuit diagram of the present utility model.
Embodiment
Describe the utility model in detail below in conjunction with accompanying drawing and specific embodiment, be used for explaining the utility model in this illustrative examples of the present utility model and explanation, but not as to restriction of the present utility model.
The single normal shock absorbing circuit being applicable to middle low power modular power source as shown in Figure 3, comprise coil T1 and MOS switching tube Q1, a described coil T1 primary side higfh-tension ceramics electric capacity C3 in parallel, described MOS switching tube Q1 leak level and RC circuit of being connected by a resistance R1 and electric capacity C4 in parallel between source class.
Wherein, described MOS switching tube Q1 grid connects PWM controller, and its drain electrode connects higfh-tension ceramics electric capacity C3, and its source electrode is by a resistance RS ground connection.The elementary Same Name of Ends of described coil T1 is connected to input, and its input is parallel with filter.Described filter is LC filter circuit.Described coil T1 level Same Name of Ends is connected to output by an inductance L 2.
The single normal shock absorbing circuit being applicable to middle low power modular power source of the present utility model, be applied to the single tube forward topology of resonant reset, without reset winding, resistance R1, electric capacity C3, C4, when switching tube Q1 turns off, energy on transformer T1 primary coil is discharged by input, to reach magnetic balance, prevents transformer T1 saturated; Wherein electric capacity C3 plays main Releasing loop, and electric capacity C4, resistance R1 then increase the drain electrode of switching tube Q1, the interelectrode capacitance of source electrode, increases Releasing loop, can improve the whole efficiency of 1%-3% like this.The single normal shock absorbing circuit being applicable to middle low power modular power source of the present utility model, by at parallel connection of primary windings higfh-tension ceramics electric capacity, switching tube leaks level upper RC circuit in parallel with between source class can very effective absorption spike, raising whole efficiency and reliability.
Embodiment recited above is only be described preferred implementation of the present utility model, not limits design of the present utility model and scope.Under the prerequisite not departing from the utility model design concept; the various modification that this area ordinary person makes the technical solution of the utility model and improvement; protection range of the present utility model all should be dropped into; the technology contents of the utility model request protection, all records in detail in the claims.
Claims (5)
1. one kind is applicable to single normal shock absorbing circuit of middle low power modular power source, comprise coil and MOS switching tube, it is characterized in that: a described coil primary end higfh-tension ceramics electric capacity in parallel, described MOS switching tube leaks level RC circuit by a resistance and capacitances in series in parallel with between source class.
2. the single normal shock absorbing circuit being applicable to middle low power modular power source according to claim 1, is characterized in that: described MOS switching tube grid connects PWM controller, and its drain electrode connects higfh-tension ceramics electric capacity, and its source electrode is by a grounding through resistance.
3. the single normal shock absorbing circuit being applicable to middle low power modular power source according to claim 1, is characterized in that: described coil primary Same Name of Ends is connected to input, and its input is parallel with filter.
4. the single normal shock absorbing circuit being applicable to middle low power modular power source according to claim 3, is characterized in that: described filter is LC filter circuit.
5. the single normal shock absorbing circuit being applicable to middle low power modular power source according to claim 1, is characterized in that: the secondary Same Name of Ends of described coil is connected to output by an inductance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420519365.0U CN204046411U (en) | 2014-09-10 | 2014-09-10 | Be applicable to single normal shock absorbing circuit of middle low power modular power source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420519365.0U CN204046411U (en) | 2014-09-10 | 2014-09-10 | Be applicable to single normal shock absorbing circuit of middle low power modular power source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204046411U true CN204046411U (en) | 2014-12-24 |
Family
ID=52247037
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420519365.0U Expired - Fee Related CN204046411U (en) | 2014-09-10 | 2014-09-10 | Be applicable to single normal shock absorbing circuit of middle low power modular power source |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204046411U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104967325A (en) * | 2015-06-29 | 2015-10-07 | 浙江大学 | Winding clamp single tube forward resonant soft-switching DC/DC converter |
| CN105450008A (en) * | 2016-01-07 | 2016-03-30 | 烽火通信科技股份有限公司 | ORing MOSFET control circuit and power supply parallel system |
| CN105553356A (en) * | 2016-01-21 | 2016-05-04 | 南京奥联汽车电子电器股份有限公司 | High-current motor drive circuit for reverse ground terminal connection protection |
| CN105552840A (en) * | 2016-01-21 | 2016-05-04 | 南京奥联汽车电子电器股份有限公司 | Large current motor driving circuit with power end protected from back connection |
-
2014
- 2014-09-10 CN CN201420519365.0U patent/CN204046411U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104967325A (en) * | 2015-06-29 | 2015-10-07 | 浙江大学 | Winding clamp single tube forward resonant soft-switching DC/DC converter |
| CN105450008A (en) * | 2016-01-07 | 2016-03-30 | 烽火通信科技股份有限公司 | ORing MOSFET control circuit and power supply parallel system |
| CN105553356A (en) * | 2016-01-21 | 2016-05-04 | 南京奥联汽车电子电器股份有限公司 | High-current motor drive circuit for reverse ground terminal connection protection |
| CN105552840A (en) * | 2016-01-21 | 2016-05-04 | 南京奥联汽车电子电器股份有限公司 | Large current motor driving circuit with power end protected from back connection |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204271904U (en) | A kind of due to voltage spikes lossless absorption circuit and Switching Power Supply | |
| CN204046411U (en) | Be applicable to single normal shock absorbing circuit of middle low power modular power source | |
| CN206004524U (en) | A kind of IGBT absorbing circuit of three-phase imbalance adjustment module | |
| CN203967965U (en) | A kind of IGBT voltage peak absorbing circuit of inverter | |
| CN104038044A (en) | IGBT buffer circuit, PFC circuit and air conditioner control system | |
| CN105144562B (en) | Switching power unit | |
| CN103151929A (en) | Forward reset circuit suitable for low voltage input | |
| CN204258617U (en) | A kind of circuit structure solving flyback type of switch source-drain sense problem | |
| CN104201874B (en) | The lossless absorption circuit and Switching Power Supply of a kind of Switching Power Supply output rectifying tube | |
| CN203193500U (en) | Switching power supply and charging loop thereof | |
| CN204131384U (en) | A kind of Switching Power Supply exports lossless absorption circuit and the Switching Power Supply of rectifying tube | |
| CN202652054U (en) | Passive lossless snubber circuit suitable for single-tube flyback | |
| CN205596011U (en) | Peak snubber circuit and switching power supply | |
| CN204304818U (en) | There is the power circuit of peak absorbing ability | |
| CN101282092B (en) | Diode absorption circuit for bridge rectifier circuit | |
| CN103457469B (en) | Anti-explosion voltage-stabilized power source | |
| CN107332543A (en) | The protection circuit and system of a kind of electronic contactor | |
| CN107592007A (en) | Inverse-excitation type switch power-supply circuit | |
| CN203086332U (en) | Passive absorption device | |
| CN205610497U (en) | Aperiodicity switching power supply controller | |
| CN204392077U (en) | Reinforced lossless absorption circuit | |
| CN202586319U (en) | Processing circuit of phase-shifting full-bridge diode peak in vehicle-mounted charger | |
| CN108631570B (en) | Absorption circuit and method | |
| CN204145284U (en) | A kind of circuit reducing switch tube voltage stress | |
| CN202285369U (en) | Single-ended primary inductor converter (Sepic) chopper circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| 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: 20141224 Termination date: 20210910 |