CN102820786A - Single-end resonance power supply device - Google Patents
Single-end resonance power supply device Download PDFInfo
- Publication number
- CN102820786A CN102820786A CN2011101755185A CN201110175518A CN102820786A CN 102820786 A CN102820786 A CN 102820786A CN 2011101755185 A CN2011101755185 A CN 2011101755185A CN 201110175518 A CN201110175518 A CN 201110175518A CN 102820786 A CN102820786 A CN 102820786A
- Authority
- CN
- China
- Prior art keywords
- power
- circuit
- switching tube
- winding
- voltage
- 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.)
- Pending
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
Landscapes
- Dc-Dc Converters (AREA)
Abstract
The invention discloses a single-end resonance power supply device. The device comprises a transformer, a switch tube, a resonance capacitor, a power stabilizing circuit and a zero-crossing detecting/auxiliary power supply circuit, wherein the transformer comprises a resonance winding, a power stabilizing winding and a zero-crossing detecting winding, a tap is led from the middle of the resonance winding and is switched in a drain of the switch tube, a power supply provides break-over voltage for a switch tube gate through a bias resistor, the switch tube is broken over, output negative pressure of the resonance winding charges the resonance capacitor, the switch tube is cut off under the control of the power stabilizing circuit, simultaneously, the voltage on the drain of the switch tube is increased gradually from zero volt under the action of the voltage on the resonance capacitor, the switch tube maintains a cutoff state under the action of the zero-crossing detecting/auxiliary power supply circuit, and the switch tube is cut over when the zero-crossing detecting/auxiliary power supply circuit detects that the magnetic flux of a magnetic core of the transformer returns to zero. The switch tube works under the state of zero voltage turning-on and zero voltage turning-off.
Description
Technical field
The present invention relates to a kind of circuit topological structure of single-ended resonant power device.
Background technology
In switch power technology, single-end circuit commonly used has: normal shock (forward) type, anti-sharp (flyback) type, BUCK and BOOST circuit etc.; The efficient of the above power supply topologies is all below 90%, and particularly existing LED power-efficient does not all also surpass 90%, and in addition, the electrical source power factor of monopolar configuration is generally all very low, needs to increase power factor compensation circuit.
Summary of the invention
For addressing the above problem, the objective of the invention is to, a kind of brand-new resonant mode single-ended (one pole) power circuit device is provided, both can improve the efficient (more than 95%) of circuit, can improve power factor (more than 0.98) again; Because circuit working is in resonance condition, thus both can driving LED, again can gas discharge lamp (like the T5 fluorescent lamp).Circuit owing to device is simple again, so reliability is high, and the life-span long (5～10 years), and cost is low.
Technical scheme proposed by the invention is: a kind of single-ended resonant power device comprises: transformer, switching tube, resonant capacitance, power stability circuit, zero point detection/auxiliary power circuit, biasing resistor; Said transformer comprises: resonance winding, power stability winding and detect winding zero point.The drain electrode that a tap inserts said switching tube is drawn in the centre of said resonance winding; The input of said resonance winding inserts dc power anode; Output inserts the input of said resonant capacitance, and the output of said resonant capacitance inserts load, and the other end of said load inserts dc power anode (or dc power cathode); The source electrode of said switching tube inserts the negative pole of DC power supply; Said power stability winding inserts said power stability circuit, detects winding said zero point and inserts detection/auxiliary power circuit at said zero point, and detect winding and also insert auxiliary power circuit said zero point; Said power stability circuit and said zero point detection/auxiliary power circuit all insert the grid of said switching tube, said auxiliary power circuit give said power stability circuit and said zero point detection/auxiliary power circuit accessory power supply is provided.
When connecting said DC power supply, said dc power anode provides conducting voltage for said switching tube grid through said biasing resistor, makes said switching tube conducting; The voltage of said power stability winding induction, through said power stability circuit, the output positive pulse is added on the said switching tube grid; Further make said switching tube saturation conduction, simultaneously, the output of said resonance winding produces negative voltage; Through said load, to the resonant capacitance charging, resonant capacitance charging current reduces gradually during this; The former limit of said resonance winding (inserting the part winding between the drain electrode of dc power anode and said switching tube) inductive current increases gradually; Under said power stability circuit control, said switching tube ends, simultaneously; Under the voltage on the said resonant capacitance (can not suddenly change) effect; Said switching tube drain voltage is risen by zero volt gradually, and said resonance winding and said resonant capacitance be through said load generating series resonance, at this moment said switching tube detect at said zero point/effect of auxiliary power circuit under the remain off state; When detection/auxiliary power circuit detected said magnetic core of transformer magnetic flux and made zero (be detect winding voltage said zero point be zero) said zero point, open said switching tube.So far, in the new cycle, said switching tube is operated in " zero " voltage and opens and the no-voltage off state, and switching loss is minimum.
Wherein, said device also comprises: rectifier and power factor compensation circuit by said rectifier and said power factor compensation circuit, convert input ac power into DC power supply and output dc voltage.Said power factor compensation circuit comprises: discharge and recharge inductance, discharge and recharge diode, rectifier diode, charge and discharge capacitance, input and output filter capacitor.Said input filter capacitor inserts the both positive and negative polarity of said rectifier respectively; Said output filter capacitor both positive and negative polarity inserts respectively on the terminal of said former DC power supply both positive and negative polarity; The said input that discharges and recharges inductance inserts said rectifier anode; Output inserts the said positive pole that discharges and recharges diode; Said charge and discharge capacitance inserts the said negative pole of diode and the negative pole of said rectifier of discharging and recharging respectively; Said rectifier negative pole inserts the negative pole of said output capacitance, and the both positive and negative polarity of said rectifier diode inserts the said negative pole of diode and the positive pole of said output capacitance of discharging and recharging respectively, and the said negative pole of diode and the output of said resonant capacitance of discharging and recharging inserted at said load two ends respectively.
When connecting AC power; Said rectifier output end produces the sine pulse direct current; Through the High frequency filter of said input capacitance, again through said inductance, said diode and the said rectifier diode of discharging and recharging of discharging and recharging to said output capacitance charging and filtering, output DC source voltage.Said dc power anode provides conducting voltage for said switching tube grid through said biasing resistor, makes said switching tube conducting, the voltage of said power stability winding induction; Through said power stability circuit, the output positive pulse is added on the said switching tube grid, further makes said switching tube saturation conduction; The output of said resonance winding produces negative voltage; By the positive pole of said rectifier, through saidly discharge and recharge inductance, saidly discharge and recharge diode, said load is charged to said resonant capacitance, the said inductive energy storage that discharges and recharges; When said switching tube ends; Said resonance winding output produces positive voltage, adds the positive voltage that the above resonant capacitance is full of at preceding half cycle, and the input of getting back to said resonance winding through said rectifier diode is to said load discharge; Simultaneously; The said energy storage that discharges and recharges on the inductance is discharged through the said said charge and discharge capacitance of diode pair that discharges and recharges, because said charge and discharge capacitance capacity is little, the said inductance that discharges and recharges further discharges to said output filter capacitor through said rectifier diode.Like this, the electric current of AC network makes alternating current be in continuous power supply state all the time through said rectifier and said power factor compensation circuit.
Wherein, said transformer is the energy storage inductor of band air gap.
Wherein, choose the inductance value (15-2mH) of said resonance winding of numerical value (1000-4000pF) and the said transformer of said electric capacity, make its condition that satisfies resonance, make the said resonance winding resonance of said electric capacity and said transformer.
Wherein, said device does not contain said power stability winding, increases the DC power supply voltage detecting circuit, and said power stability circuit according to the value of said voltage detecting circuit, is regulated the driving pulsewidth of giving said switching tube grid in proportion, makes power output stable.Said device comprises: transformer, switching tube, resonant capacitance, power stability circuit, zero point detection/auxiliary power circuit, biasing resistor, voltage detecting circuit.Said transformer comprises: detect winding at resonance winding, zero point.Said biasing resistor inserts detection/auxiliary power circuit at said zero point; The drain electrode that a tap inserts said switching tube is drawn in the centre of said resonance winding; The input of said resonance winding inserts dc power anode; Output inserts the input of said resonant capacitance, and the output of said resonant capacitance inserts load, and the other end of said load inserts dc power anode (or dc power cathode); The source electrode of said switching tube inserts the negative pole of DC power supply; Detect winding said zero point and insert detection/auxiliary power circuit at said zero point, said power stability circuit inserts the grid of said switching tube, and said auxiliary power circuit provides accessory power supply for said power stability circuit.
When connecting DC power supply, said dc power anode provides voltage for said boost voltage through said biasing resistor, and said accessory power supply provides voltage for said power stability circuit; Said power stability circuit according to the value of said voltage detecting circuit, is regulated the driving pulsewidth of giving said switching tube grid in proportion; Make said switching tube saturation conduction, simultaneously, the output of said resonance winding produces negative voltage; Through said load, to the resonant capacitance charging, resonant capacitance charging current reduces gradually during this; The former limit of said resonance winding (inserting the part winding between the drain electrode of dc power anode and said switching tube) inductive current increases gradually; Under said power stability circuit control, said switching tube ends, simultaneously; Under the voltage on the said resonant capacitance (can not suddenly change) effect; Said switching tube drain voltage is risen by zero volt gradually, and said resonance winding and said resonant capacitance be through said load generating series resonance, at this moment said switching tube detect at said zero point/effect of auxiliary power circuit under the remain off state; When detection/auxiliary power circuit detected said magnetic core of transformer magnetic flux and made zero (be detect winding voltage said zero point be zero) said zero point, open said switching tube.So far, in the new cycle, said switching tube is operated in " zero " voltage and opens and the no-voltage off state, and switching loss is minimum.
Wherein, said device also comprises output rectification circuit, through said output rectification circuit, the output of power stability, transfers the direct current output of current stabilization to.Said output rectification circuit comprises: rectifier diode A, rectifier diode B, filter capacitor.The negative pole of said rectifier diode A inserts the output of said resonant capacitance; Anodal positive pole (or negative pole) or the said negative pole that discharges and recharges diode that inserts said DC power supply; The positive pole of said rectifier diode B inserts the output of said resonant capacitance; Negative pole inserts DC load, and the other end of said DC load inserts positive pole of said DC power supply (or negative pole) or the said negative pole that discharges and recharges diode, and the two ends of said DC load are inserted at said filter capacitor two ends respectively.
The invention discloses a kind of single-ended resonant power device; Said device has utilized single-ended resonant circuit; Produce the high-frequency ac power of stablizing power output, load is driven, comprise transformer, switching tube, resonant capacitance, power stability circuit; Zero point detection/auxiliary power circuit, biasing resistor; Said transformer comprises: resonance winding, power stability winding and detect winding zero point.The drain electrode that a tap inserts switching tube is drawn in the centre of said resonance winding.During circuit working, power supply provides conducting voltage for the switching tube grid through biasing resistor, makes the switching tube conducting; The output negative voltage of resonance winding through said load, charges to resonant capacitance; Simultaneously, the former limit inductive current of resonance winding increases gradually, under the power stability circuit control; Switching tube ends, simultaneously, and under the voltage effect on the resonant capacitance; Said switching tube drain voltage is risen by zero volt gradually, and resonance winding resonant electric capacity passes through the load generating series resonance, switching tube this moment remain off state under the effect of detection/auxiliary power circuit at zero point; When detection/auxiliary power circuit detected the magnetic core of transformer magnetic flux and made zero zero point, open said switching tube.So far, in the new cycle, said switching tube is operated in " zero " voltage and opens and the no-voltage off state, and switching loss is minimum.
Apparatus of the present invention also comprise output rectification circuit, through said output rectification circuit, the output of power stability, transfer the direct current output of current stabilization to, driving LED.
Description of drawings
Following accompanying drawing helps the detailed the present invention that understands, but only is to explain for example, should not be understood that limitation of the present invention.
Fig. 1 is the electrical block diagram of the single-ended resonant power device of the present invention;
Fig. 2 is the electrical block diagram of the single-ended resonant power device of the present invention band power factor compensation;
Fig. 3 is the another kind of electrical block diagram of the single-ended resonant power device of the present invention.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment the present invention is done detailed explanation.Following explanation will help those skilled in the art better to understand other advantages of the present invention, purpose and characteristic.
Be illustrated in figure 1 as the electrical block diagram of the single-ended resonant power device of the present invention, this single-ended resonant power device comprises: transformer 1, switching tube 2, resonant capacitance 3, power stability circuit 4, zero point, detection/auxiliary power circuit 5, biasing resistor 8.Said transformer 1 comprises: resonance winding 11, power stability winding 12 and detect winding 13 zero point.
The drain electrode that a tap inserts said switching tube 2 is drawn in the centre of said resonance winding 11; The input of said resonance winding 11 inserts dc power anode; Output inserts the input of said resonant capacitance 3; The output of said resonant capacitance 3 inserts load; The other end of said load inserts dc power anode (or dc power cathode), and the source electrode of said switching tube 2 inserts the negative pole of DC power supply, and said power stability winding 12 inserts said power stability circuit 4; Detect winding 13 accesses detection/auxiliary power circuit at said zero point 5 said zero point; Detect winding 13 and also insert auxiliary power circuit said zero point, said power stability circuit 4 with said zero point detections/auxiliary power circuit 5 all insert the grid of said switching tube 2, said auxiliary power circuit give said power stability circuit 4 and said zero point detection/auxiliary power circuit 5 accessory power supply is provided.
When connecting DC power supply, said dc power anode provides conducting voltage for said switching tube 2 grids through said biasing resistor 8, makes said switching tube 2 conductings; The voltage of said power stability winding 12 inductions, through said power stability circuit 4, the output positive pulse is added on said switching tube 2 grids; Further make said switching tube 2 saturation conductions, simultaneously, the output of said resonance winding 11 produces negative voltage; Through said load, to resonant capacitance 3 chargings, resonant capacitance 3 charging currents reduce gradually during this; The former limit of said resonance winding 11 (inserting the part winding between dc power anode and 2 drain electrodes of said switching tube) inductive current increases gradually; Under the control of said power stability circuit 4, said switching tube 2 ends, simultaneously; Under the voltage on the said resonant capacitance 3 (can not suddenly change) effect; Said switching tube 2 drain voltages are risen by zero volt gradually, and said resonance winding 11 and said resonant capacitance 3 be through said load generating series resonance, at this moment said switching tube 2 remain off state under detection/auxiliary power circuit 5 effect at said zero point; When detection/auxiliary power circuit 5 detected said transformer 1 magnetic core magnetic flux and made zero (be detect winding 13 voltages said zero point be zero) said zero point, open said switching tube 2.So far, in the new cycle, said switching tube 2 is operated in " zero " voltage and opens and the no-voltage off state, and switching loss is minimum.
With reference to figure 2 is the electrical block diagram of this single-ended resonant power device band power factor compensation; Device shown in Figure 2 also comprises: rectifier 6 and power factor compensation circuit 7; By said rectifier 6 and said power factor compensation circuit 7, convert input ac power into DC power supply and output dc voltage.Said power factor compensation circuit 7 comprises: discharge and recharge inductance 71, discharge and recharge diode 72, rectifier diode 73, charge and discharge capacitance 74, input filter capacitor 75 and output filter capacitor 76.Said input filter capacitor 75 inserts the both positive and negative polarity of said rectifier 6 respectively; Said output filter capacitor 76 both positive and negative polarities insert respectively on the terminal of said former DC power supply both positive and negative polarity; The said input that discharges and recharges inductance 71 inserts said rectifier 6 positive poles; Output inserts the said positive pole that discharges and recharges diode 72; Said charge and discharge capacitance 75 inserts the said negative pole of diode 72 and the negative pole of said rectifier 6 of discharging and recharging respectively; Said rectifier 6 negative poles insert the negative pole of said output capacitance 76, and the both positive and negative polarity of said rectifier diode 73 inserts the said negative pole of diode 72 and the positive pole of said output capacitance 76 of discharging and recharging respectively, and the said negative pole of diode 72 and the output of said resonant capacitance 3 of discharging and recharging inserted at said load two ends respectively.
When connecting AC power; Said rectifier 6 outputs produce the sine pulse direct current; High frequency filter through said input capacitance 75; Again through said inductance 71, said diode 72 and 73 pairs of said output capacitance 76 chargings of said rectifier diode and filtering, the output DC source voltage of discharging and recharging of discharging and recharging.Said dc power anode provides conducting voltage for said switching tube 2 grids through said biasing resistor 8, makes said switching tube 2 conductings, the voltage of said power stability winding 12 inductions; Through said power stability circuit 4, the output positive pulse is added on said switching tube 2 grids, further makes said switching tube 2 saturation conductions; The output of said resonance winding 11 produces negative voltage; By the positive pole of said rectifier 6, to said resonant capacitance charging 3, saidly discharge and recharge inductance 71 energy storage through said inductance 71, the said diode 72, said load of discharging and recharging of discharging and recharging; When said switching tube 2 ends; Said resonance winding 11 outputs produce positive voltage, add the positive voltage that the above resonant capacitance 3 is full of at preceding half cycle, and the input of getting back to said resonance winding 11 through said rectifier diode 73 is to said load discharge; Simultaneously; The said energy storage that discharges and recharges on the inductance 71 is discharged through the said 72 pairs of said charge and discharge capacitances 75 of diode that discharge and recharge, because said charge and discharge capacitance 75 capacity are little, the said inductance 71 that discharges and recharges is further through 73 pairs of said output filter capacitors 76 discharges of said rectifier diode.Like this, the electric current of AC network is through said rectifier 6 and said power factor compensation circuit 7, makes alternating current be in continuous power supply state (measured power factor reach 0.99 or more than) all the time.
Be the another kind of electrical block diagram of the single-ended resonant power device of the present invention with reference to figure 3.Comparison diagram 1, the said device of Fig. 3 does not contain said power stability winding 12, increases DC power supply voltage detecting circuit 41; Said power stability circuit 4; According to the value of said voltage detecting circuit 41, regulate the driving pulsewidth of giving said switching tube 2 grids in proportion, make power output stable.
Fig. 3 comprises for device: transformer 1, switching tube 2, resonant capacitance 3, power stability circuit 4, zero point, detection/auxiliary power circuit 5, biasing resistor 8, voltage detecting circuit 41.Said transformer 1 comprises: detect winding 13 at resonance winding 11, zero point.
Said biasing resistor 8 accesses detection/auxiliary power circuit at said zero point 5; The drain electrode that a tap inserts said switching tube 2 is drawn in the centre of said resonance winding 11; The input of said resonance winding 11 inserts dc power anode; Output inserts the input of said resonant capacitance 3, and the output of said resonant capacitance 3 inserts load, and the other end of said load inserts dc power anode (or dc power cathode); The source electrode of said switching tube 2 inserts the negative pole of DC power supply; Detect winding 13 accesses detection/auxiliary power circuit at said zero point 5 said zero point, said power stability circuit 4 inserts the grid of said switching tube 2, and said auxiliary power circuit 5 provides accessory power supply for said power stability circuit 4.
When connecting DC power supply, said dc power anode provides voltage for said boost voltage 5 through said biasing resistor 8, and said accessory power supply 5 provides voltage for said power stability circuit 4; Said power stability circuit 4 according to the value of said voltage detecting circuit 41, is regulated the driving pulsewidth of giving said switching tube 2 grids in proportion; Make said switching tube 2 saturation conductions, simultaneously, the output of said resonance winding 11 produces negative voltage; Through said load, to resonant capacitance 3 chargings, resonant capacitance 3 charging currents reduce gradually during this; The former limit of said resonance winding 11 (inserting the part winding between dc power anode and 2 drain electrodes of said switching tube) inductive current increases gradually; Under the control of said power stability circuit 4, said switching tube 2 ends, simultaneously; Under the voltage on the said resonant capacitance 3 (can not suddenly change) effect; Said switching tube 2 drain voltages are risen by zero volt gradually, and said resonance winding 11 and said resonant capacitance 3 be through said load generating series resonance, at this moment said switching tube 2 remain off state under detection/auxiliary power circuit 5 effect at said zero point; When detection/auxiliary power circuit 5 detected said transformer 1 magnetic core magnetic flux and made zero (be detect winding 13 voltages said zero point be zero) said zero point, open said switching tube 2.So far, in the new cycle, said switching tube 2 is operated in " zero " voltage and opens and the no-voltage off state, and switching loss is minimum.
Fig. 1,2,3 said devices also comprise: output rectification circuit; Through said output rectification circuit,, transfer the direct current output of current stabilization to, driving LED the output of power stability.Said output rectification circuit comprises: rectifier diode A, rectifier diode B, filter capacitor.The negative pole of said rectifier diode A inserts the output of said resonant capacitance 3; Anodal positive pole (or negative pole) or the said negative pole that discharges and recharges diode 72 of Fig. 2 that inserts Fig. 1,3 said DC power supplys; The positive pole of said rectifier diode B inserts the output of said resonant capacitance 3; Negative pole inserts DC load; The other end of said DC load inserts the positive pole (or negative pole) or the said negative pole that discharges and recharges diode 72 of Fig. 2 of Fig. 1,3 said DC power supplys, and the two ends of said DC load are inserted at said filter capacitor two ends respectively.
Claims (6)
1. single-ended resonant power device is characterized in that comprising: transformer, switching tube, resonant capacitance, power stability circuit, zero point detection/auxiliary power circuit, biasing resistor; Said transformer comprises: resonance winding, power stability winding and detect winding zero point.The drain electrode that a tap inserts said switching tube is drawn in the centre of said resonance winding; The input of said resonance winding inserts dc power anode; Output inserts the input of said resonant capacitance, and the output of said resonant capacitance inserts load, and the other end of said load inserts dc power anode (or dc power cathode); The source electrode of said switching tube inserts the negative pole of DC power supply; Said power stability winding inserts said power stability circuit, detects winding said zero point and inserts detection/auxiliary power circuit at said zero point, and detect winding and also insert auxiliary power circuit said zero point; Said power stability circuit and said zero point detection/auxiliary power circuit all insert the grid of said switching tube, said auxiliary power circuit give said power stability circuit and said zero point detection/auxiliary power circuit accessory power supply is provided.
When connecting DC power supply, said dc power anode provides conducting voltage for said switching tube grid through said biasing resistor, makes said switching tube conducting; The voltage of said power stability winding induction, through said power stability circuit, the output positive pulse is added on the said switching tube grid; Further make said switching tube saturation conduction, simultaneously, the output of said resonance winding produces negative voltage; Through said load, to the resonant capacitance charging, resonant capacitance charging current reduces gradually during this; The former limit of said resonance winding (inserting the part winding between the drain electrode of dc power anode and said switching tube) inductive current increases gradually; Under said power stability circuit control, said switching tube ends, simultaneously; Under the voltage on the said resonant capacitance (can not suddenly change) effect; Said switching tube drain voltage is risen by zero volt gradually, and said resonance winding and said resonant capacitance be through said load generating series resonance, at this moment said switching tube detect at said zero point/effect of auxiliary power circuit under the remain off state; When detection/auxiliary power circuit detected said magnetic core of transformer magnetic flux and made zero (be detect winding voltage said zero point be zero) said zero point, open said switching tube.So far, in the new cycle, said switching tube is operated in " zero " voltage and opens and the no-voltage off state, and switching loss is minimum.
2. switching power unit according to claim 1; It is characterized in that; Said device also comprises: rectifier and power factor compensation circuit by said rectifier and said power factor compensation circuit, convert input ac power into DC power supply and output dc voltage.Said power factor compensation circuit comprises: discharge and recharge inductance, discharge and recharge diode, rectifier diode, charge and discharge capacitance, input and output filter capacitor.Said input filter capacitor inserts the both positive and negative polarity of said rectifier respectively; Said output filter capacitor both positive and negative polarity inserts respectively on the terminal of said former DC power supply both positive and negative polarity; The said input that discharges and recharges inductance inserts said rectifier anode; Output inserts the said positive pole that discharges and recharges diode; Said charge and discharge capacitance inserts the said negative pole of diode and the negative pole of said rectifier of discharging and recharging respectively; Said rectifier negative pole inserts the negative pole of said output capacitance, and the both positive and negative polarity of said rectifier diode inserts the said negative pole of diode and the positive pole of said output capacitance of discharging and recharging respectively, and the said negative pole of diode and the output of said resonant capacitance of discharging and recharging inserted at said load two ends respectively.
When connecting AC power; Said rectifier output end produces the sine pulse direct current; Through the High frequency filter of said input capacitance, again through said inductance, said diode and the said rectifier diode of discharging and recharging of discharging and recharging to said output capacitance charging and filtering, output DC source voltage.Said dc power anode provides conducting voltage for said switching tube grid through said biasing resistor, makes said switching tube conducting, the voltage of said power stability winding induction; Through said power stability circuit, the output positive pulse is added on the said switching tube grid, further makes said switching tube saturation conduction; The output of said resonance winding produces negative voltage; By the positive pole of said rectifier, through saidly discharge and recharge inductance, saidly discharge and recharge diode, said load is charged to said resonant capacitance, the said inductive energy storage that discharges and recharges; When said switching tube ends; Said resonance winding output produces positive voltage, adds the positive voltage that the above resonant capacitance is full of at preceding half cycle, and the input of getting back to said resonance winding through said rectifier diode is to said load discharge; Simultaneously; The said energy storage that discharges and recharges on the inductance is discharged through the said said charge and discharge capacitance of diode pair that discharges and recharges, because said charge and discharge capacitance capacity is little, the said inductance that discharges and recharges further discharges to said output filter capacitor through said rectifier diode.Like this, the electric current of AC network makes alternating current be in continuous power supply state all the time through said rectifier and said power factor compensation circuit.
3. device according to claim 1 and 2 is characterized in that: said transformer is the energy storage inductor of band air gap.
4. according to claim 1 or 2 or 3 described devices; It is characterized in that: the inductance value (15-2mH) of said resonance winding of choosing numerical value (1000-4000pF) and the said transformer of said electric capacity; Make its condition that satisfies resonance, make the said resonance winding resonance of said electric capacity and said transformer.
5. according to claim 1 or 2 or 3 or 4 described devices; It is characterized in that: said device does not contain said power stability winding; Increase the DC power supply voltage detecting circuit, said power stability circuit is according to the value of said voltage detecting circuit; Regulate the driving pulsewidth of giving said switching tube grid in proportion, make power output stable.Said device comprises: transformer, switching tube, resonant capacitance, power stability circuit, zero point detection/auxiliary power circuit, biasing resistor, voltage detecting circuit.Said transformer comprises: detect winding at resonance winding, zero point.Said biasing resistor inserts detection/auxiliary power circuit at said zero point; The drain electrode that a tap inserts said switching tube is drawn in the centre of said resonance winding; The input of said resonance winding inserts dc power anode; Output inserts the input of said resonant capacitance, and the output of said resonant capacitance inserts load, and the other end of said load inserts dc power anode (or dc power cathode); The source electrode of said switching tube inserts the negative pole of DC power supply; Detect winding said zero point and insert detection/auxiliary power circuit at said zero point, said power stability circuit inserts the grid of said switching tube, and said auxiliary power circuit provides accessory power supply for said power stability circuit.
When connecting DC power supply, said dc power anode provides voltage for said boost voltage through said biasing resistor, and said accessory power supply provides voltage for said power stability circuit; Said power stability circuit according to the value of said voltage detecting circuit, is regulated the driving pulsewidth of giving said switching tube grid in proportion; Make said switching tube saturation conduction, simultaneously, the output of said resonance winding produces negative voltage; Through said load, to the resonant capacitance charging, resonant capacitance charging current reduces gradually during this; The former limit of said resonance winding (inserting the part winding between the drain electrode of dc power anode and said switching tube) inductive current increases gradually; Under said power stability circuit control, said switching tube ends, simultaneously; Under the voltage on the said resonant capacitance (can not suddenly change) effect; Said switching tube drain voltage is risen by zero volt gradually, and said resonance winding and said resonant capacitance be through said load generating series resonance, at this moment said switching tube detect at said zero point/effect of auxiliary power circuit under the remain off state; When detection/auxiliary power circuit detected said magnetic core of transformer magnetic flux and made zero (be detect winding voltage said zero point be zero) said zero point, open said switching tube.So far, in the new cycle, said switching tube is operated in " zero " voltage and opens and the no-voltage off state, and switching loss is minimum.
6. according to claim 1 or 2 or 3 or 4 or 5 described devices, it is characterized in that said device also comprises: output rectification circuit; Through said output rectification circuit,, transfer the direct current output of current stabilization to the output of power stability.Said output rectification circuit comprises: rectifier diode A, rectifier diode B, filter capacitor.The negative pole of said rectifier diode A inserts the output of said resonant capacitance; Anodal positive pole (or negative pole) or the said negative pole that discharges and recharges diode that inserts said DC power supply; The positive pole of said rectifier diode B inserts the output of said resonant capacitance; Negative pole inserts DC load, and the other end of said DC load inserts positive pole of said DC power supply (or negative pole) or the said negative pole that discharges and recharges diode, and the two ends of said DC load are inserted at said filter capacitor two ends respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101755185A CN102820786A (en) | 2011-06-10 | 2011-06-10 | Single-end resonance power supply device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101755185A CN102820786A (en) | 2011-06-10 | 2011-06-10 | Single-end resonance power supply device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102820786A true CN102820786A (en) | 2012-12-12 |
Family
ID=47304700
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101755185A Pending CN102820786A (en) | 2011-06-10 | 2011-06-10 | Single-end resonance power supply device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102820786A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110098743A (en) * | 2018-01-19 | 2019-08-06 | 戴泺格半导体股份有限公司 | The self adaptive control of zero voltage switch in the switch power converter of Multi- Switch |
| CN111835208A (en) * | 2020-08-14 | 2020-10-27 | 深圳市航嘉驰源电气股份有限公司 | Switching power supply with PFC circuit |
| CN113992033A (en) * | 2021-10-29 | 2022-01-28 | 京东方科技集团股份有限公司 | Drive circuit, light control glass and motor |
-
2011
- 2011-06-10 CN CN2011101755185A patent/CN102820786A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110098743A (en) * | 2018-01-19 | 2019-08-06 | 戴泺格半导体股份有限公司 | The self adaptive control of zero voltage switch in the switch power converter of Multi- Switch |
| CN110098743B (en) * | 2018-01-19 | 2021-11-09 | 戴泺格半导体股份有限公司 | Switching power converter with adaptive control of the conduction period of the auxiliary switching transistor |
| US11626803B2 (en) | 2018-01-19 | 2023-04-11 | Dialog Semiconductor Inc. | Adaptive control for zero-voltage switching in a multi-switch switching power converter |
| CN111835208A (en) * | 2020-08-14 | 2020-10-27 | 深圳市航嘉驰源电气股份有限公司 | Switching power supply with PFC circuit |
| CN111835208B (en) * | 2020-08-14 | 2022-01-04 | 深圳市航嘉驰源电气股份有限公司 | Switching power supply with PFC circuit |
| CN113992033A (en) * | 2021-10-29 | 2022-01-28 | 京东方科技集团股份有限公司 | Drive circuit, light control glass and motor |
| CN113992033B (en) * | 2021-10-29 | 2023-12-12 | 京东方科技集团股份有限公司 | Driving circuit, dimming glass and motor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107493638B (en) | Based on BOOST-BUCK Converter Interleaving Parallel no electrolytic capacitor LED drive power and switching method | |
| CN205490151U (en) | High -efficient electric field induction gets electric installation | |
| CN101882879B (en) | Circuit converting constant current source to constant voltage source and light using same | |
| CN206250979U (en) | A kind of quasi-resonance active-clamp flyback converter | |
| CN110995025A (en) | Switching power supply circuit | |
| CN206908518U (en) | Superposing type electric field induction electricity getting device | |
| CN211127590U (en) | Phase-shifted full-bridge zero-voltage zero-current soft switching DC-DC converter | |
| CN114665700B (en) | Forward and flyback-resonant type single-stage bridgeless isolated PFC converter | |
| CN102412715B (en) | Circuit of restraining reverse spike voltage output of commutation diode | |
| CN112003467A (en) | Three switching tube bridgeless Cuk power factor correction converter | |
| CN103049028A (en) | Constant current source for high voltage magnetic switch resetting | |
| CN103094975B (en) | A kind of battery charging circuit and LED lamp | |
| CN102820786A (en) | Single-end resonance power supply device | |
| KR102485477B1 (en) | Low Voltage DC-DC Converter | |
| CN203339962U (en) | Switched-capacitor type AC voltage regulator | |
| CN103929067A (en) | Novel topological structure of isolated two-way DC/DC converter | |
| CN204967397U (en) | Car charger | |
| CN211266788U (en) | Switching power supply circuit | |
| TW201914184A (en) | Power device with an isolated high boost converter and a balance modules for serially connected batteries | |
| CN207251464U (en) | Anti- overshoot circuit with the damping of wide output area | |
| CN207368895U (en) | rectification circuit and switching power supply | |
| CN109382211B (en) | Electrostatic dust removal pulse power supply | |
| CN106787706B (en) | Coupling inductor hybrid lifting converter | |
| CN206041785U (en) | AC drive and control circuit of DC circuit and system thereof | |
| CN116455097B (en) | Battery wireless charging system with configurable rectifier, method and control method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20121212 |