CN205385403U - Be used for IGBT driven fly -Buck formula high voltage isolation power supply circuit - Google Patents
Be used for IGBT driven fly -Buck formula high voltage isolation power supply circuit Download PDFInfo
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- CN205385403U CN205385403U CN201620189764.4U CN201620189764U CN205385403U CN 205385403 U CN205385403 U CN 205385403U CN 201620189764 U CN201620189764 U CN 201620189764U CN 205385403 U CN205385403 U CN 205385403U
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Abstract
The utility model provides the utility model discloses a IGBT driven fly buck formula high voltage isolation power supply circuit relates to a high voltage isolation power. The problem of current IGBT drive high voltage isolation power isolation voltage not high and keep apart power inefficiency, bulky etc is solved. Does the circuit include transformer, rectifier module, fly buck voltage stabilizing module. The primary side winding of transformer connects external alternate current power supply, and the secondery side winding of transformer connects rectifier module, is fly connected to rectifier module's output buck voltage stabilizing module, fly buck voltage stabilizing module output positive 5 lies prostrate, positive 15 volts lie prostrate stabilizing the voltage with burden 10. Through using fly buck topology switching power supply, greatly reduced the power cost, has reduced power supply size and has improved power efficiency, be applicable to very much IGBT's drive power supply.
Description
Technical field
The utility model relates to a kind of Fly-Buck formula high voltage isolated power supply driven for IGBT, relates to field of high-voltage technology.
Background technology
In high pressure field, IGBT is to apply full-control type power device widely.Along with IGBT rated operational voltage and string
Joining the raising of IGBT quantity, used by IGBT drive circuit, the isolation voltage over the ground of power supply improves therewith, power supply manufacture difficulty,
Cost increases the most therewith with volume.
Utility model content
The utility model drives high voltage isolated power supply isolation voltage the highest and insulating power supply efficiency to solve existing IGBT
The problems such as low, volume is big, and then provide a kind of Fly-Buck formula high voltage isolated power supply circuit driven for IGBT.
The utility model adopts the technical scheme that for solving above-mentioned technical problem: a kind of Fly-Buck driven for IGBT
Formula high voltage isolated power supply, described Fly-Buck formula high voltage isolated power supply circuit includes transformer, rectification module, Fly-Buck
Voltage stabilizing module；Transformer action is high_voltage isolation, energy transmission and voltage transformation, and the primary side winding of transformer connects outside friendship
Stream power supply, secondary limit winding connection rectification module of transformer, the effect of rectification module is to be direct current by AC rectification, whole
The output of flow module connects Fly-Buck Voltage stabilizing module；Fly-Buck Voltage stabilizing module produce positive 5 volts, positive 15 volts,
Negative 10 volts of regulated output voltages work for IGBT drive circuit.
Utility model provides the benefit that:
Realize high_voltage isolation by transformer, only need to change transformer type, can realize and different voltages, the power supply of frequency
Power supply is arranged in pairs or groups.Fly-Buck Topology Switch power supply combines Buck buck chopper Switching Power Supply simple in construction and Fly-back
The advantage that inverse-excitation type switch power-supply multi output is powered.By using Fly-Buck Topology Switch power supply, greatly reduce power supply
Cost, reducing power volume, and improve power-efficient, the driving being highly suitable for IGBT is powered.
Accompanying drawing explanation
Fig. 1 is general structure block diagram of the present utility model；Fig. 2 is the circuit diagram of rectification module of the present utility model；Fig. 3
Circuit diagram for Fly-Buck Voltage stabilizing module of the present utility model.
Detailed description of the invention
Detailed description of the invention one: as it is shown in figure 1, the Fly-Buck formula high pressure driven for IGBT described in present embodiment
Insulating power supply circuit, including transformer, rectification module, Fly-Buck Voltage stabilizing module.The effect of transformer be high_voltage isolation,
Energy transmission and voltage transformation, its primary side winding connects external ac power source, and secondary limit winding connects rectification module.Rectification module
Effect be to be direct current by AC rectification, the output of rectification module connects Fly-Buck Voltage stabilizing module.Fly-Buck
Positive 5 volts, positive 15 volts, the regulated output voltage of negative 10 volts can be produced, work for IGBT drive circuit.
Detailed description of the invention two: as it is shown in figure 1, in present embodiment, described transformer by magnetic core, primary side winding,
One limit winding and insulation composition；Primary side winding connects external ac power source, and secondary limit winding output connects rectification module.
Other composition is identical with detailed description of the invention one with annexation.
Detailed description of the invention three: as in figure 2 it is shown, in present embodiment, described rectification module is by binding post and rectifier bridge group
Become；The secondary limit winding output of transformer connects the binding post IS1 of rectification module, and binding post is connected with rectifier bridge.
There is diode D1, D2, D3, D4 composition rectifier bridge of nanosecond reverse recovery time.The anode of D1 and the pin of IS1
The negative electrode of 2 and D2 is connected, and negative electrode is connected with the negative electrode of D3；The anode of D3 is connected with the negative electrode of the pin 1 and D4 of IS1；
The tie point of D1 Yu D3 negative electrode is node 1, and the tie point of D2 Yu D4 anode is node 2, and two nodes are steady with Fly-Buck
Die block is connected.Other composition is identical with detailed description of the invention one or two with annexation.
Detailed description of the invention four: as it is shown on figure 3, in present embodiment, described Fly-Buck Voltage stabilizing module is by being depressured conversion
Device chip LM5160 and peripheral circuit composition thereof.The core devices of Fly-Buck Voltage stabilizing module is step-down controller chip
LM5160.Rectification module output node 1 and node 2 connect VIN pin and the ground of LM5160 respectively；Resistance RON bridges
Between the VIN pin and RON pin of LM5160；The plus earth of Zener diode DZ47, negative electrode connects node 1；Non-
Polar capacitor CIN1 and CIN2 is all connected across between VIN pin and the ground of step-down controller chip LM5160；Resistance RUV2
Being connected across between the EN/UVLO pin of node 1 and LM5160, resistance RUV1 is connected across the EN/UVLO pin of LM5160
And between ground；Polarity free capacitor CSS is connected across between SS pin and the ground of LM5160；The AGND pin of LM5160, PGND
Pin and the equal ground connection of PAD pin.Two SW pins of LM5160 are connected, and polarity free capacitor CBST is connected across LM5160
BST pin and SW pin between；The FPWM pin of LM5160 is connected with VCC pin, polarity free capacitor Cvcc across
It is connected between the VCC pin of LM5160 and ground；Resistance Rr one end connects the SW pin of LM5160, and the other end is node 4；
Polarity free capacitor Cac is connected across between the FB pin of LM5160 and node 4；Polarity free capacitor Cr one end connects node 4,
The other end is node 3, and node 3 outwards exports positive 5 volts of voltages；Resistance RFB2 is connected across the FB of node 3 and LM5160
Between pin；Resistance RFB1 is connected across between FB pin and the ground of LM5160；Polarity free capacitor COUT is connected across node 3
And between ground；Coupling inductance Couple has armature winding side, secondary limit winding side1, secondary limit winding side2 tri-
Winding, the Same Name of Ends of armature winding side connects node 3, and non-same polarity connects the SW pin of LM5160.Diode DR16
Anode and negative electrode connect respectively Couple secondary limit winding side1 Same Name of Ends and ground, secondary limit winding side1 non-with
The negative 10 volts of voltages of name end output.Polarity free capacitor COUT16 is connected across between non-same polarity and the ground of time limit winding side1.
The minus earth of Zener diode DZ16, anode connects the non-same polarity of side1；The anode of diode DR15 connects Couple
The Same Name of Ends of secondary limit winding side2, negative electrode exports positive 15 volts of voltages.The secondary limit winding side2's of Couple is non-of the same name
End ground connection；Polarity free capacitor COUT15 be connected across and the negative electrode of DR15 between；The plus earth of Zener diode DZ15,
Negative electrode connects the negative electrode of DR15.Other composition and annexation and detailed description of the invention one, two or three are identical.
Above embodiment is only to be described preferred embodiment of the present utility model, not to model of the present utility model
Enclosing and be defined, on the premise of without departing from the utility model design spirit, this area ordinary skill technical staff is to this practicality
Various deformation that novel technical scheme is made and improvement, all should fall into the protection model that claims of the present utility model determine
Enclose.
Claims (4)
1. the Fly-Buck formula high voltage isolated power supply circuit driven for IGBT, it is characterised in that: described high voltage isolated power supply circuit includes transformer, rectification module, Fly-Buck Voltage stabilizing module；The effect of transformer is high_voltage isolation, energy transmission and voltage transformation, and its primary side winding connects external ac power source, and secondary limit winding connects rectification module；The effect of rectification module is to be direct current by AC rectification, and the output of rectification module connects Fly-Buck Voltage stabilizing module；Fly-Buck Voltage stabilizing module can produce positive 5 volts, positive 15 volts, the regulated output voltage of negative 10 volts, works for IGBT drive circuit.
The Fly-Buck formula high voltage isolated power supply circuit driven for IGBT the most according to claim 1, it is characterised in that: described transformer is made up of with insulation magnetic core, primary side winding, an one limit winding；Primary side winding connects external ac power source；Secondary limit winding output connects rectification module.
The Fly-Buck formula high voltage isolated power supply circuit driven for IGBT the most according to claim 1 and 2, it is characterised in that: described rectification module is made up of binding post and rectifier bridge；The secondary limit winding output of transformer connects the binding post IS1 of rectification module, and binding post is connected with rectifier bridge；There is diode D1, D2, D3, D4 composition rectifier bridge of nanosecond reverse recovery time；The anode of D1 is connected with the negative electrode of the pin 2 and D2 of IS1, and negative electrode is connected with the negative electrode of D3；The anode of D3 is connected with the negative electrode of the pin 1 and D4 of IS1；The tie point of D1 Yu D3 negative electrode is rectified output node 1；The tie point of D2 Yu D4 anode is rectified output node 2, and two nodes are connected with Fly-Buck Voltage stabilizing module.
The Fly-Buck formula high voltage isolated power supply circuit driven for IGBT the most according to claim 1, it is characterised in that: described Fly-Buck Voltage stabilizing module is made up of step-down controller chip LM5160 and peripheral circuit thereof；The core devices of Fly-Buck Voltage stabilizing module is step-down controller chip LM5160；Rectification module output node 1 and node 2 connect VIN pin and the ground of LM5160 respectively；Resistance RON is connected across between the VIN pin of LM5160 and RON pin；The plus earth of Zener diode DZ47, negative electrode connects node 1；Nonpolar electric capacity CIN1 and CIN2 is all connected across between VIN pin and the ground of step-down controller chip LM5160；Resistance RUV2 is connected across between the EN/UVLO pin of node 1 and LM5160, and resistance RUV1 is connected across between EN/UVLO pin and the ground of LM5160；Polarity free capacitor CSS is connected across between SS pin and the ground of LM5160；The AGND pin of LM5160, PGND pin and the equal ground connection of PAD pin；Two SW pins of LM5160 are connected, and polarity free capacitor CBST is connected across between the BST pin of LM5160 and SW pin；The FPWM pin of LM5160 is connected with VCC pin, and polarity free capacitor Cvcc is connected across between the VCC pin of LM5160 and ground；Resistance Rr one end connects the SW pin of LM5160, and the other end is node 4；Polarity free capacitor Cac is connected across between the FB pin of LM5160 and node 4；Polarity free capacitor Cr one end connects node 4, and the other end is node 3, and node 3 outwards exports positive 5 volts of voltages；Resistance RFB2 is connected across between the FB pin of node 3 and LM5160；Resistance RFB1 is connected across between FB pin and the ground of LM5160；Polarity free capacitor COUT is connected across between node 3 and ground；Coupling inductance Couple has armature winding side, secondary limit winding side1, secondary tri-windings of limit winding side2, and the Same Name of Ends of armature winding side connects node 3, and non-same polarity connects the SW pin of LM5160；The anode of diode DR16 and negative electrode connect Same Name of Ends and the ground of the secondary limit winding side1 of Couple respectively, the negative 10 volts of voltages of non-same polarity output of secondary limit winding side1；Polarity free capacitor COUT16 is connected across between non-same polarity and the ground of time limit winding side1；The minus earth of Zener diode DZ16, anode connects the non-same polarity of side1；The anode of diode DR15 connects the Same Name of Ends of the secondary limit winding side2 of Couple, and negative electrode exports positive 15 volts of voltages；The non-same polarity ground connection of the secondary limit winding side2 of Couple；Polarity free capacitor COUT15 be connected across and the negative electrode of DR15 between；The plus earth of Zener diode DZ15, negative electrode connects the negative electrode of DR15.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620189764.4U CN205385403U (en) | 2016-03-14 | 2016-03-14 | Be used for IGBT driven fly -Buck formula high voltage isolation power supply circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620189764.4U CN205385403U (en) | 2016-03-14 | 2016-03-14 | Be used for IGBT driven fly -Buck formula high voltage isolation power supply circuit |
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| Publication Number | Publication Date |
|---|---|
| CN205385403U true CN205385403U (en) | 2016-07-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620189764.4U Expired - Fee Related CN205385403U (en) | 2016-03-14 | 2016-03-14 | Be used for IGBT driven fly -Buck formula high voltage isolation power supply circuit |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107863879A (en) * | 2017-12-05 | 2018-03-30 | 珠海格力电器股份有限公司 | Isolated power supply control device and control method |
| WO2022074378A1 (en) * | 2020-10-06 | 2022-04-14 | Murata Manufacturing Co., Ltd. | Isolated dc-dc converter |
-
2016
- 2016-03-14 CN CN201620189764.4U patent/CN205385403U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107863879A (en) * | 2017-12-05 | 2018-03-30 | 珠海格力电器股份有限公司 | Isolated power supply control device and control method |
| WO2022074378A1 (en) * | 2020-10-06 | 2022-04-14 | Murata Manufacturing Co., Ltd. | Isolated dc-dc converter |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160713 Termination date: 20180314 |
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| CF01 | Termination of patent right due to non-payment of annual fee |