CN204068745U - A kind of transformer leakage inductance Energy harvesting type flyback sourse system - Google Patents
A kind of transformer leakage inductance Energy harvesting type flyback sourse system Download PDFInfo
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- CN204068745U CN204068745U CN201420572930.XU CN201420572930U CN204068745U CN 204068745 U CN204068745 U CN 204068745U CN 201420572930 U CN201420572930 U CN 201420572930U CN 204068745 U CN204068745 U CN 204068745U
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Abstract
The utility model discloses a kind of transformer leakage inductance Energy harvesting type flyback sourse system, comprise rectifier filter, transformer leakage inductance Energy harvesting type anti exciting converter and DC load.This power-supply system utilizes the clamp circuit of anti exciting converter, not only realize flyback transformer leakage inductance energy reclaim, and will reclaim energy coordination electric power source pair of module control module realize power supply, and decrease in anti exciting converter realize power transformer assist winding.The utility model can improve the conversion efficiency of flyback sourse system, and reducing system cost, is importantly the no-load loss that significantly can reduce this power-supply system.
Description
Technical field
The utility model relates to a kind of transformer leakage inductance Energy harvesting type flyback sourse system, specifically refers to that being applicable to battery charging, LED illumination driving etc. needs isolation power supply, the power-supply system of line output of going forward side by side Current Control.
Background technology
Charge at battery, field of LED illumination, power-supply system adopts anti exciting converter to realize isolation AC-DC conversion, practical anti exciting converter all adopts transformer to assist winding to be powered to its control module by rectifier diode, simultaneously, for absorbing the energy that anti exciting converter transformer leakage inductance stores, prevent from damaging anti exciting converter main switching device, have employed clamp circuit, mainly be divided into based on resistance, the consumption-type RCD clamp circuit of electric capacity and diode, based on inductance, the energy feedback type LCD clamp circuit of electric capacity and diode, and based on the active clamp circuit of auxiliary switch.Therefore, the flyback sourse system not only complex structure that battery charging, field of LED illumination use, efficiency is low, and cost is high.
Summary of the invention
The purpose of this utility model is the defect existed for above-mentioned prior art, develop a kind of transformer leakage inductance Energy harvesting type flyback sourse system, anti exciting converter clamp circuit is realized powering to control module, not only effectively make use of flyback transformer leakage inductance energy, also efficiently solve the power supply of control module, winding assisted by the transformer simultaneously decreasing anti exciting converter realization power supply.
The technical solution of the utility model is as follows:
A kind of transformer leakage inductance Energy harvesting type flyback sourse system, comprise rectifier filter, transformer leakage inductance Energy harvesting type anti exciting converter and DC load, it is characterized in that, the input termination input ac power of described rectifier filter, AC power is filtered into direct current through conversion by rectifier filter, and its DC output end connects the direct-flow input end of transformer leakage inductance Energy harvesting type anti exciting converter; Its direct current Input transformation, through inversion rectification, is become the low-voltage direct of isolation by described transformer leakage inductance Energy harvesting type anti exciting converter, and its low-voltage direct exports termination DC load.
Described rectifier filter comprises safety element, rectifier diode D1, rectifier diode D2, rectifier diode D3, rectifier diode D4, electric capacity C1, electric capacity C2, inductance L 1 and inductance L 2; One end of safety element is connected with ac input end L, and the other end of safety element is connected with the anode of rectifier diode D1; The negative electrode of rectifier diode D2 is connected with the anode of rectifier diode D1, and ac input end N is connected with the anode of rectifier diode D3 with the negative electrode of rectifier diode D4 respectively; One end of inductance L 1 is connected with the positive pole of electric capacity C1 with the negative electrode of the negative electrode of rectifier diode D1, rectifier diode D3, and the other end of inductance L 1 is connected with the positive pole of electric capacity C2, forms the DC output end positive pole of rectifier filter; One end of inductance L 2 is connected with the negative pole of electric capacity C1 with the anode of the anode of rectifier diode D2, rectifier diode D4, and the other end of inductance L 2 is connected with the negative pole of electric capacity C2, forms the DC output end negative pole of rectifier filter.
Described transformer leakage inductance Energy harvesting type anti exciting converter comprises field effect transistor MOS, electric capacity C3, electric capacity C4, electric capacity C5, electric capacity C6, electric capacity C7, resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, resistance R6, resistance R7, diode D5, diode D6, diode D7, power module, control module and transformer T1; Described control module comprises power end Vcc, Current adjustment end RI, earth terminal CGnd, current feedback terminal CS, drive end Gate and pressure feedback port IFB; Described power module comprises input Vin, earth terminal PGnd and output end vo ut; One end of resistance R1 is connected with the drain electrode of field effect transistor MOS with the positive pole of electric capacity C3, and the resistance R1 other end is connected with power module outlet Vout with the Vcc of control module; One end of resistance R4 is connected with the current feedback terminal CS of control module with the source electrode of field effect transistor MOS, and the other end of resistance R4 is connected with the earth terminal PGND of power module with one end of the negative pole of electric capacity C4, electric capacity C8; The Current adjustment end RI of control module is connected with the former limit winding anode of transformer T1 with the negative pole of electric capacity C4 through the resistance R5 of serial connection; The pressure feedback port IFB of control module is connected with the former limit winding opposite ends of transformer T1 with the negative pole of electric capacity C3, the anode of diode D5 through the resistance R3 of serial connection; The drive end Gate of control module is connected with the grid of field effect transistor MOS through the resistance R2 of series connection; The anode of one end of resistance R7 and the vice-side winding anode of transformer T1, diode D7, the negative pole of electric capacity C6, the negative pole of electric capacity C7 are connected with the other end of electric capacity C8, and the other end of resistance R7 is connected with the positive pole of electric capacity C7 with the positive pole of the negative electrode of diode D6, electric capacity C6; One end of resistance R6 is connected with the negative pole of electric capacity C5 with the anode of the vice-side winding opposite ends of transformer T1, diode D6, and the other end of resistance R6 is connected with the positive pole of electric capacity C5 with the negative electrode of diode D7.
Described power module is divided into RCD type power module, based on triode linear power supply module and high-frequency DC-DC power module.
Described RCD type power module comprises resistance R0, electric capacity C0 and voltage stabilizing didoe D0; One end of resistance R0 is connected with the positive pole of the negative electrode of voltage stabilizing didoe D0, electric capacity C0, forms the output end vo ut of RCD type power module; The other end of resistance R0 forms the input Vin of RCD type power module; The anode of voltage stabilizing didoe D0 is connected with the negative pole of electric capacity C0, forms the earth terminal PGnd of RCD type power module.
Describedly comprise triode BJT, resistance R, voltage stabilizing didoe D and electric capacity C based on triode linear power supply module; One end of resistance R is connected with the collector electrode of triode BJT, forms the input Vin based on triode linear power supply module; The other end of resistance R is connected with the negative electrode of the base stage of triode BJT, voltage stabilizing didoe D; The positive pole of electric capacity C is connected with the emitter of triode BJT, forms the output end vo ut based on triode linear power supply module; The anode of voltage stabilizing didoe D is connected with the negative pole of electric capacity C, forms the earth terminal PGnd based on triode linear power supply module.
The utility model has the advantage of, structure is simple, and system cost is low, and conversion efficiency is high.The utility model utilizes anti exciting converter clamp circuit not only to realize flyback transformer leakage inductance energy and reclaims, and realizes powering to control module, improves the efficiency of anti exciting converter.Meanwhile, winding assisted by the transformer that the utility model decreases anti exciting converter realization power supply, reduces the volume of transformer, simplifies the production process of transformer, reduce system cost.
Accompanying drawing explanation
Fig. 1 is transformer leakage inductance Energy harvesting type flyback sourse system module schematic diagram of the present utility model.
Fig. 2 is the transformer leakage inductance Energy harvesting type flyback sourse system schematic of an embodiment of the present utility model.
Fig. 3 be an embodiment of the present utility model based on triode linear power supply module schematic diagram.
Fig. 4 is the high-frequency DC-DC power module schematic diagram of an embodiment of the present utility model.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described further.
Be illustrated in figure 1 transformer leakage inductance Energy harvesting type flyback sourse system module schematic diagram of the present utility model, comprise rectifier filter, transformer leakage inductance Energy harvesting type anti exciting converter and DC load.The input termination input ac power of rectifier filter, AC power is filtered into direct current through conversion by rectifier filter, and its DC output end connects the direct-flow input end of transformer leakage inductance Energy harvesting type anti exciting converter.Its direct current Input transformation, through inversion rectification, is become the low-voltage direct of isolation by transformer leakage inductance Energy harvesting type anti exciting converter, and its low-voltage direct exports termination DC load.DC load can be battery, LED, also can be the electric terminal such as mobile phone, computer.
Be illustrated in figure 2 the transformer leakage inductance Energy harvesting type flyback sourse system schematic of an embodiment of the present utility model.Wherein, rectifier filter comprises safety element, rectifier diode D1, rectifier diode D2, rectifier diode D3, rectifier diode D4, electric capacity C1, electric capacity C2, inductance L 1 and inductance L 2.One end of safety element is connected with ac input end L, and the other end of safety element is connected with the anode of rectifier diode D1; The negative electrode of rectifier diode D2 is connected with the anode of rectifier diode D1, and ac input end N is connected with the anode of rectifier diode D3 with the negative electrode of rectifier diode D4 respectively; One end of inductance L 1 is connected with the positive pole of electric capacity C1 with the negative electrode of the negative electrode of rectifier diode D1, rectifier diode D3, and the other end of inductance L 1 is connected with the positive pole of electric capacity C2, forms the DC output end positive pole of rectifier filter; One end of inductance L 2 is connected with the negative pole of electric capacity C1 with the anode of the anode of rectifier diode D2, rectifier diode D4, and the other end of inductance L 2 is connected with the negative pole of electric capacity C2, forms the DC output end negative pole of rectifier filter.The safety element of rectifier filter can be fuse, can recover insurance and thermistor etc., and when overcurrent, safety element disconnects.
In Fig. 2, transformer leakage inductance Energy harvesting type anti exciting converter comprises field effect transistor MOS, electric capacity C3, electric capacity C4, electric capacity C5, electric capacity C6, electric capacity C7, resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, resistance R6, resistance R7, diode D5, diode D6, diode D7, power module, control module and transformer T1; Described control module comprises power end Vcc, Current adjustment end RI, earth terminal CGnd, current feedback terminal CS, drive end Gate and pressure feedback port IFB; Described power module comprises input Vin, earth terminal PGnd and output end vo ut; One end of resistance R1 is connected with the drain electrode of field effect transistor MOS with the positive pole of electric capacity C3, and the resistance R1 other end is connected with power module outlet Vout with the Vcc of control module; One end of resistance R4 is connected with the current feedback terminal CS of control module with the source electrode of field effect transistor MOS, and the other end of resistance R4 is connected with the earth terminal PGND of power module with one end of the negative pole of electric capacity C4, electric capacity C8; The Current adjustment end RI of control module is connected with the former limit winding anode of transformer T1 with the negative pole of electric capacity C4 through the resistance R5 of serial connection; The pressure feedback port IFB of control module is connected with the former limit winding opposite ends of transformer T1 with the negative pole of electric capacity C3, the anode of diode D5 through the resistance R3 of serial connection; The drive end Gate of control module is connected with the grid of field effect transistor MOS through the resistance R2 of series connection; The anode of one end of resistance R7 and the vice-side winding anode of transformer T1, diode D7, the negative pole of electric capacity C6, the negative pole of electric capacity C7 are connected with the other end of electric capacity C8, and the other end of resistance R7 is connected with the positive pole of electric capacity C7 with the positive pole of the negative electrode of diode D6, electric capacity C6; One end of resistance R6 is connected with the negative pole of electric capacity C5 with the anode of the vice-side winding opposite ends of transformer T1, diode D6, and the other end of resistance R6 is connected with the positive pole of electric capacity C5 with the negative electrode of diode D7.
In Fig. 2, transformer leakage inductance Energy harvesting type anti exciting converter power module used is RCD type power module, comprises resistance R0, electric capacity C0 and voltage stabilizing didoe D0; One end of resistance R0 is connected with the positive pole of the negative electrode of voltage stabilizing didoe D0, electric capacity C0, forms the output end vo ut of RCD type power module; The other end of resistance R0 forms the input Vin of RCD type power module; The anode of voltage stabilizing didoe D0 is connected with the negative pole of electric capacity C0, forms the earth terminal PGnd of RCD type power module.
In Fig. 2, the DC load that connects is battery pack.
In Fig. 2, after transformer leakage inductance Energy harvesting type flyback sourse system access 220V civil power, exchange conversion is become direct current by rectifier filter, and charge to electric capacity C1, electric capacity C2, electric capacity C3, now electric capacity C3 is by the former limit winding of resistance R1, electric capacity C0 and transformer T1, form charge circuit, to electric capacity C0 precharge.After C0 reaches charge threshold, control module work.This flyback sourse system works, in discontinuous conduct mode (DCM pattern), by the current feedback terminal CS of control module, detects transformer excitation electric current, and controls output duty cycle adjustment transformer excitation electric current to steady state value.Simultaneously, detect field effect transistor MOS by the IFB of control module end to close and have no progeny, the voltage of transformer primary side winding when diode D6 output current reduces to zero, when this voltage is lower than set point, increase the switching frequency that drive end Gate exports, the voltage of control transformer former limit winding reaches set point; When voltage is higher than set point, reduce the switching frequency that drive end Gate exports, the voltage of control transformer former limit winding reaches set point; By the control of the voltage of transformer primary side winding, reach and control power-supply system low-voltage direct output voltage.After power-supply system is run, the clamp circuit be made up of diode D5 and electric capacity C4 constantly stores the energy of transformer leakage inductance, and discharges through resistance R0 and voltage stabilizing didoe D0.Wherein, voltage stabilizing didoe flows through certain electric current I 0, and another part electric current I out exports to the power end Vcc of control module by output end vo ut, and it is VD0 that voltage stabilizing didoe D0 plays regulated output voltage.The direct voltage of electric capacity C4 is VC4, then output current meets relational expression, Iout=(VC4-VD0)/R 0-I0.
Be illustrated in figure 3 an embodiment of the present utility model based on triode linear power supply module schematic diagram, comprise triode BJT, resistance R, voltage stabilizing didoe D and electric capacity C; One end of resistance R is connected with the collector electrode of triode BJT, forms the input Vin based on triode linear power supply module; The other end of resistance R is connected with the negative electrode of the base stage of triode BJT, voltage stabilizing didoe D; The positive pole of electric capacity C is connected with the emitter of triode BJT, forms the output end vo ut based on triode linear power supply module; The anode of voltage stabilizing didoe D is connected with the negative pole of electric capacity C, forms the earth terminal PGnd based on triode linear power supply module.When this circuit working, voltage stabilizing didoe D punctures conducting through resistance R, and output voltage stabilizing is VD, triode BJT base stage is to emitter conducting simultaneously, triode BJT is operated in linear zone, and triode BJT base stage is Vbe to the voltage of emitter, then electric capacity C both end voltage Vout meets Vout=VD-Vbe.Due to VD and Vbe voltage stabilization, therefore regulated output voltage Vout should can be obtained based on triode linear power supply module.
Be illustrated in figure 4 the high-frequency DC-DC power module schematic diagram of an embodiment of the present utility model, comprise electric capacity C11, electric capacity C12, inductance L 11, diode D11, field effect transistor MOS11 and control to drive.This circuit is typical BUCK circuit, realizes input and output reduction regulation.High-frequency DC-DC power module described in the utility model, also comprises the DC-DC power module of Boost, Cuk and band transformer isolation.
Claims (6)
1. a transformer leakage inductance Energy harvesting type flyback sourse system, comprise rectifier filter, transformer leakage inductance Energy harvesting type anti exciting converter and DC load, it is characterized in that, the input termination input ac power of described rectifier filter, AC power is filtered into direct current through conversion by rectifier filter, and its DC output end connects the direct-flow input end of transformer leakage inductance Energy harvesting type anti exciting converter; Its direct current Input transformation, through inversion rectification, is become the low-voltage direct of isolation by described transformer leakage inductance Energy harvesting type anti exciting converter, and its low-voltage direct exports termination DC load.
2. a kind of transformer leakage inductance Energy harvesting type flyback sourse system according to claim 1, it is characterized in that, described rectifier filter comprises safety element, rectifier diode D1, rectifier diode D2, rectifier diode D3, rectifier diode D4, electric capacity C1, electric capacity C2, inductance L 1 and inductance L 2; One end of safety element is connected with ac input end L, and the other end of safety element is connected with the anode of rectifier diode D1; The negative electrode of rectifier diode D2 is connected with the anode of rectifier diode D1, and ac input end N is connected with the anode of rectifier diode D3 with the negative electrode of rectifier diode D4 respectively; One end of inductance L 1 is connected with the positive pole of electric capacity C1 with the negative electrode of the negative electrode of rectifier diode D1, rectifier diode D3, and the other end of inductance L 1 is connected with the positive pole of electric capacity C2, forms the DC output end positive pole of rectifier filter; One end of inductance L 2 is connected with the negative pole of electric capacity C1 with the anode of the anode of rectifier diode D2, rectifier diode D4, and the other end of inductance L 2 is connected with the negative pole of electric capacity C2, forms the DC output end negative pole of rectifier filter.
3. a kind of transformer leakage inductance Energy harvesting type flyback sourse system according to claim 1, it is characterized in that, described transformer leakage inductance Energy harvesting type anti exciting converter comprises field effect transistor MOS, electric capacity C3, electric capacity C4, electric capacity C5, electric capacity C6, electric capacity C7, resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, resistance R6, resistance R7, diode D5, diode D6, diode D7, power module, control module and transformer T1; Described control module comprises power end Vcc, Current adjustment end RI, earth terminal CGnd, current feedback terminal CS, drive end Gate and pressure feedback port IFB; Described power module comprises input Vin, earth terminal PGnd and output end vo ut; One end of resistance R1 is connected with the drain electrode of field effect transistor MOS with the positive pole of electric capacity C3, and the resistance R1 other end is connected with power module outlet Vout with the Vcc of control module; One end of resistance R4 is connected with the current feedback terminal CS of control module with the source electrode of field effect transistor MOS, and the other end of resistance R4 is connected with the earth terminal PGND of power module with one end of the negative pole of electric capacity C4, electric capacity C8; The Current adjustment end RI of control module is connected with the former limit winding anode of transformer T1 with the negative pole of electric capacity C4 through the resistance R5 of serial connection; The pressure feedback port IFB of control module is connected with the former limit winding opposite ends of transformer T1 with the negative pole of electric capacity C3, the anode of diode D5 through the resistance R3 of serial connection; The drive end Gate of control module is connected with the grid of field effect transistor MOS through the resistance R2 of series connection; The anode of one end of resistance R7 and the vice-side winding anode of transformer T1, diode D7, the negative pole of electric capacity C6, the negative pole of electric capacity C7 are connected with the other end of electric capacity C8, and the other end of resistance R7 is connected with the positive pole of electric capacity C7 with the positive pole of the negative electrode of diode D6, electric capacity C6; One end of resistance R6 is connected with the negative pole of electric capacity C5 with the anode of the vice-side winding opposite ends of transformer T1, diode D6, and the other end of resistance R6 is connected with the positive pole of electric capacity C5 with the negative electrode of diode D7.
4. a kind of transformer leakage inductance Energy harvesting type flyback sourse system according to claim 3, it is characterized in that, described power module is divided into RCD type power module, based on triode linear power supply module and high-frequency DC-DC power module.
5. a kind of transformer leakage inductance Energy harvesting type flyback sourse system according to claim 4, it is characterized in that, described RCD type power module comprises resistance R0, electric capacity C0 and voltage stabilizing didoe D0; One end of resistance R0 is connected with the positive pole of the negative electrode of voltage stabilizing didoe D0, electric capacity C0, forms the output end vo ut of RCD type power module; The other end of resistance R0 forms the input Vin of RCD type power module; The anode of voltage stabilizing didoe D0 is connected with the negative pole of electric capacity C0, forms the earth terminal PGnd of RCD type power module.
6. a kind of transformer leakage inductance Energy harvesting type flyback sourse system according to claim 4, is characterized in that, describedly comprises triode BJT, resistance R, voltage stabilizing didoe D and electric capacity C based on triode linear power supply module; One end of resistance R is connected with the collector electrode of triode BJT, forms the input Vin based on triode linear power supply module; The other end of resistance R is connected with the negative electrode of the base stage of triode BJT, voltage stabilizing didoe D; The positive pole of electric capacity C is connected with the emitter of triode BJT, forms the output end vo ut based on triode linear power supply module; The anode of voltage stabilizing didoe D is connected with the negative pole of electric capacity C, forms the earth terminal PGnd based on triode linear power supply module.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104852610A (en) * | 2015-05-15 | 2015-08-19 | 广州金升阳科技有限公司 | Leakage inductance energy recovery circuit and switching power supply based on circuit |
| CN106329968A (en) * | 2015-07-01 | 2017-01-11 | 中兴通讯股份有限公司 | Power supply circuit and method of auxiliary power source |
| CN108011533A (en) * | 2016-10-31 | 2018-05-08 | 油研工业株式会社 | Inductive load driving circuit |
| CN113067472A (en) * | 2021-03-16 | 2021-07-02 | 苏州悉智科技有限公司 | Power semiconductor packaging structure |
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2014
- 2014-10-07 CN CN201420572930.XU patent/CN204068745U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104852610A (en) * | 2015-05-15 | 2015-08-19 | 广州金升阳科技有限公司 | Leakage inductance energy recovery circuit and switching power supply based on circuit |
| CN104852610B (en) * | 2015-05-15 | 2018-03-06 | 广州金升阳科技有限公司 | Leakage inductance energy recovery circuit and the Switching Power Supply based on the circuit |
| CN106329968A (en) * | 2015-07-01 | 2017-01-11 | 中兴通讯股份有限公司 | Power supply circuit and method of auxiliary power source |
| CN108011533A (en) * | 2016-10-31 | 2018-05-08 | 油研工业株式会社 | Inductive load driving circuit |
| CN108011533B (en) * | 2016-10-31 | 2019-12-06 | 油研工业株式会社 | inductive load driving circuit |
| CN113067472A (en) * | 2021-03-16 | 2021-07-02 | 苏州悉智科技有限公司 | Power semiconductor packaging structure |
| CN113067472B (en) * | 2021-03-16 | 2022-03-29 | 苏州悉智科技有限公司 | Power semiconductor packaging structure |
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