CN101860237A - High-power factor constant-current circuit and power source - Google Patents
High-power factor constant-current circuit and power source Download PDFInfo
- Publication number
- CN101860237A CN101860237A CN201010189501A CN201010189501A CN101860237A CN 101860237 A CN101860237 A CN 101860237A CN 201010189501 A CN201010189501 A CN 201010189501A CN 201010189501 A CN201010189501 A CN 201010189501A CN 101860237 A CN101860237 A CN 101860237A
- Authority
- CN
- China
- Prior art keywords
- power factor
- circuit
- resistance
- output
- factor correction
- 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.)
- Granted
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
Abstract
The invention is suitable for the field of power factor correction, and provides a high-power factor constant-current circuit and a power source. The high-power factor constant-current circuit comprises an electromagnetic compatible module, an input rectifying and filtering circuit, a power converting and power factor correcting circuit, an output rectifying and filtering circuit and a sampling and amplifying circuit. The electromagnetic compatible module is used for receiving the input of alternating current, inhibiting the conducted interference in the circuit and outputting the alternating current; the input rectifying and filtering circuit is used for rectifying the alternating current to be a pulse direct current; the power converting and power factor correcting circuit is used for carrying out power conversion and power factor correction on the pulse direct current according to a sampling feedback signal; the output rectifying and filtering circuit is used for rectifying and filtering the current output by the power converting and power factor correcting circuit to improve output waveform; and the sampling and amplifying circuit is used for sampling the voltage and the current output by the output rectifying and filtering circuit to output the sampling feedback signal. The invention realizes the output of the high-power factor constant current and reduces a primary power factor correcting circuit with simpleness, reliability and low cost.
Description
Technical field
The invention belongs to the power factor correction field, relate in particular to a kind of constant current circuit with high power factor and power supply.
Background technology
In recent years, along with development of electronic technology, some communication equipments such as computer are universal day by day, and are widely used in various field, and problem the such as wherein harmonic pollution of electrical network and input power factor be low seems and becomes increasingly conspicuous.The inside of these equipment needs one alternating current is converted into galvanic power unit.In this transfer process, because the existence of some non-linear elements, though the alternating voltage that causes importing is sinusoidal, but the alternating current of input seriously distorts, comprise a large amount of harmonic waves, not only reduce the power factor of input circuit, and the public power system has been produced pollution, caused fault.Obviously, using effective alignment technique that harmonic pollution is controlled at small range has been the task of top priority.
In order to limit current waveform distortion and harmonic wave, make electromagnetic environment cleaner, all worked out the related standards of restriction current harmonics both at home and abroad, as IEC555-2, IEEC519, GB17625 etc.Power factor correction (PFC) technology that adopts modern HF power conversion technology is to solve the most effective means of harmonic pollution.In order to reduce the pollution of harmonic wave to AC network, this just must carry out power factor correction to the input circuit of power supply product such as UPS, high-frequency switch rectifying power supply etc., to reduce harmonic current to greatest extent.The purpose of power factor correction adopts certain control method exactly, makes the input current of power supply follow the tracks of input voltage, and power factor is close to 1.
Summary of the invention
The purpose of the embodiment of the invention is to provide a kind of constant current circuit with high power factor, can reduce harmonic current effectively, improves the harmonic pollution and the input power factor of electrical network, and simple and reliable, cost is low.
The embodiment of the invention is achieved in that a kind of constant current circuit with high power factor, and this constant current circuit with high power factor comprises:
The electromagnetic compatibility module is used for receiving exchanging and imports, and suppresses the conducted interference in the circuit;
Input rectifying and filter circuit are used for the AC rectification of described electromagnetic compatibility module output is become pulsating direct current;
Power Conversion and circuit of power factor correction are used for according to the sampling feedback signal Power Conversion and power factor correction being carried out in described pulsating direct current;
Output rectification and filter circuit are used for the electric current of described Power Conversion and circuit of power factor correction output is carried out rectification and filtering, improve output waveform; And
Sampling and amplifying circuit are used for the voltage and current of described output rectification and filter circuit output is taken a sample, and the feedback signal of will taking a sample feeds back to described Power Conversion and circuit of power factor correction.
Another purpose of the embodiment of the invention is to provide a kind of power supply, comprises above-mentioned constant current circuit with high power factor.
The constant current circuit with high power factor that the embodiment of the invention provides adopts the Power Factor Correction Control chip, constitute the single-ended flyback topological circuit, can reduce harmonic current effectively, improve the harmonic pollution and the input power factor of electrical network, realized high power factor constant current output, reduced one-level circuit of power factor correction (DC-DC) simultaneously, simple and reliable, cost is low.
Description of drawings
Fig. 1 is the circuit theory diagrams of the constant current circuit with high power factor that provides of the embodiment of the invention;
Fig. 2 is the circuit structure diagram of electromagnetic compatibility module in the constant current circuit with high power factor shown in Figure 1;
Fig. 3 is the circuit structure diagram of input rectifying and filter circuit in the constant current circuit with high power factor shown in Figure 1;
Fig. 4 is the structure chart of Power Conversion and circuit of power factor correction in the constant current circuit with high power factor shown in Figure 1;
Fig. 5 is a circuit structure diagram of exporting rectification and filter circuit in the constant current circuit with high power factor shown in Figure 1;
Fig. 6 is the sampling and the circuit structure diagram of amplifying circuit in the constant current circuit with high power factor shown in Figure 1.
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
It is the single-ended flyback topological circuit of core that the embodiment of the invention adopts with Power Conversion and circuit of power factor correction, realizes high power factor constant current output, has reduced one-level circuit of power factor correction (DC-DC).
Fig. 1 shows the circuit structure of the constant current circuit with high power factor that the embodiment of the invention provides, and for convenience of explanation, only shows the part relevant with the embodiment of the invention.
This circuit comprises electromagnetic compatibility module 1, input rectifying and filter circuit 2, Power Conversion and circuit of power factor correction 3, output rectification and filter circuit 4 and sampling and amplifying circuit 5.
Electromagnetic compatibility module 1 receives and exchanges input, suppresses the conducted interference in the circuit.
Input rectifying and filter circuit 2 become pulsating direct current with the AC rectification of electromagnetic compatibility module 1 output.
Power Conversion and circuit of power factor correction 3 carry out Power Conversion and power factor correction according to the sampling feedback signal of sampling and amplifying circuit 5 outputs to the pulsating direct current of input rectifying and filter circuit 2 outputs.
The electric current of output rectification and 4 pairs of Power Conversions of filter circuit and circuit of power factor correction 3 outputs carries out rectification and filtering, improves output waveform, output DC.
The voltage and current of sampling and the output rectification of 5 pairs of amplifying circuits and filter circuit 4 outputs is taken a sample, and the feedback signal of will take a sample feeds back to Power Conversion and circuit of power factor correction 3, thereby makes the output of exporting rectification and filter circuit 4 reach constant current constant voltage.
Fig. 2 is the structure that the embodiment of the invention provides electromagnetic compatibility module in the constant current circuit with high power factor, for convenience of explanation, only shows the part relevant with the embodiment of the invention.
Electromagnetic compatibility module 1 comprises resistance R 1, R2, differential mode capacitor CX2, differential mode filter inductance L1 and L1A, common mode capacitance CY1, CY2 and common mode inductance L2.
The alternating current inlet is connected to fuse F1, anti-lightning strike piezo-resistance VR1 and antisurge thermistor NTC.The L end that exchanges input is successively by continuous with the N end that exchanges input behind fuse F1, anti-lightning strike piezo-resistance VR1 and the antisurge thermistor NTC.
The contact of fuse F1 and anti-lightning strike piezo-resistance VR1 is defined as La, and the contact of anti-lightning strike piezo-resistance VR1 and antisurge thermistor NTC is defined as Lb.
The end of differential mode filter inductance L1 links to each other with a La, other end connecting resistance R1, and the other end of resistance R 1 links to each other with resistance R 2, another termination differential mode filter inductance L1A of resistance R 2, the other end of differential mode filter inductance L1A links to each other with a Lb.
The contact of differential mode filter inductance L1 and resistance R 1 is defined as Na, and the contact of differential mode filter inductance L1A and resistance R 2 is defined as Nb.
The termination Na point of differential mode capacitor CX2, another termination Nb point.
The termination Na point of common mode capacitance CY1, the other end is connected with common mode capacitor C Y2, another termination Nb point of common mode capacitance CY2, the contact ground connection of common mode capacitance CY1 and CY2.
Common mode inductance L2 comprises first winding and second winding, first winding be connected on Na point and output 1. between, second winding be connected on Nb point and output 2. between.
In electromagnetic compatibility module 1, differential mode filter inductance L1, L1A and differential mode capacitor CX2 can suppress the differential mode interference in the circuit effectively, common mode inductance L2 and common mode capacitance CY1, CY2 can suppress the common mode disturbances in the circuit effectively, thereby make electromagnetic compatibility module 1 can suppress conducted interference in the circuit effectively.
Fig. 3 shows the structure of input rectifying and filter circuit in the constant current circuit with high power factor that the embodiment of the invention provides, and for convenience of explanation, only shows the part relevant with the embodiment of the invention.
Input rectifying and filter circuit 2 comprise the bridge rectifier that 4 diodes are formed, capacitor C 1, C2 and inductance L 3.
In the bridge rectifier heteropole contact of diode respectively with the output of electromagnetic compatibility module 1 1., 2. link to each other, be total to anode contact ground connection, the common cathode contact is earlier by capacitor C 1 ground connection, again successively by inductance L 3 and capacitor C 2 ground connection, the contact of inductance L 3 and capacitor C 2 is the output of input rectifying and filter circuit 2, is made as 3. end.
In input rectifying and filter circuit 2, alternating current becomes pulsating direct current through behind the bridge rectifier earlier, again wave circuit output after filtration.
Fig. 4 shows the structure of Power Conversion and circuit of power factor correction in the constant current circuit with high power factor that the embodiment of the invention provides, and for convenience of explanation, only shows the part relevant with the embodiment of the invention.
Power Conversion and circuit of power factor correction 3 comprise control circuit 41, switching signal change-over circuit 42, high frequency transformer 43 and common mode capacitance CY3, wherein:
The sampling feedback signal of 41 pairs of receptions of control circuit is handled, the output corresponding PWM.
Switching signal change-over circuit 42 is converted into switch actuating signals according to the pwm control signal that control circuit 41 sends with pwm control signal.
Common mode capacitance CY3 is used for suppressing the common mode disturbances of circuit.
But Power Factor Correction Control chip U1 is a simple power factor correction circuit efficiently, improved the reliability of system greatly, for example adopted power factor correction chip SA7527, its built-in R/C filter, and carry current-sensing circuit, therefore do not need outside R/C filter.Also has special anti-breakdown circuit in addition.Be applicable to electric ballast and volume required little, low in energy consumption, the high density power supply that peripheral components is few.In addition, the drive threshold of all right power-limiting metal-oxide-semiconductor of output driver clamp circuit.
The peripheral module of Power Factor Correction Control chip U1 comprises operating voltage module 411, error amplifier module 412 and driving output module 413, wherein:
Drive output module 413 produces Power Factor Correction Control chip U1 according to the sampling feedback signal pwm control signal output.
Resistance R 8 links to each other with high level HV+, the output that high level HV+ is input rectifying and filter circuit 2 3., resistance R 8, R9, R10 are series between the pin 8 of high level HV+ and Power Factor Correction Control chip U1 successively.
High level HV+ arrives the pin 8 of Power Factor Correction Control chip U1 successively through resistance R 8, R9, R10.The pin 8 of Power Factor Correction Control chip U1 is the operating voltage pin, links to each other the other end ground connection of common mode capacitance CY3 through capacitor C 5 in parallel with common mode capacitor C Y3 with electrochemical capacitor C6 respectively.
The sampling feedback signal that sampling and amplifying circuit 5 are gathered feeds back to control circuit 41 by optocoupler PC1.The pin 1 of Power Factor Correction Control chip U1 is the error amplifier input pin, the sampling feedback signal is passed through the pin 1 of optocoupler PC1 and resistance R 12 to Power Factor Correction Control chip U1 successively, one end of resistance R 12 links to each other with the emitter of optocoupler PC1, and the other end connects the pin 1 of Power Factor Correction Control chip U1.
The pin 2 of Power Factor Correction Control chip U1 is the error amplifier output pin, capacitor C 8, C7 are series between the pin 2 and pin 1 of Power Factor Correction Control chip U1, resistance R 13 is in parallel with capacitor C 8, after resistance R 14, the R15 parallel connection, one end links to each other with the non-earth terminal of common mode capacitor C Y3, and the other end links to each other with the emitter of optocoupler PC1.
Drive output module 413 and comprise resistance R 18, R19, R20, R21, R22, diode D3 and capacitor C 9, wherein:
The negative electrode of diode D3 links to each other with the pin 7 of Power Factor Correction Control chip U1, and anode links to each other with the contact of resistance R 22 and R21.
One end of resistance R 20 links to each other with the grid of metal-oxide-semiconductor Q1, and the other end links to each other with the non-earth terminal of common mode capacitor C Y3.
The pin 4 of Power Factor Correction Control chip U1 is a PWM comparator input pin, and resistance R 19 is connected between the pin 4 of the source electrode of metal-oxide-semiconductor Q1 and Power Factor Correction Control chip U1.
One end of resistance R 18 links to each other with the source electrode of metal-oxide-semiconductor Q1, and the other end links to each other with the non-earth terminal of common mode capacitor C Y3.
One end of capacitor C 9 links to each other with the pin 4 of Power Factor Correction Control chip U1, and the other end links to each other with the non-earth terminal of common mode capacitor C Y3.
The pin 3 of Power Factor Correction Control chip U1 is the multiplier input pin, high level HV+ arrives the pin 3 of Power Factor Correction Control chip U1 successively through resistance R 5, R6, R7, after resistance R 11 and capacitor C 4 are in parallel, one end links to each other with the pin 3 of Power Factor Correction Control chip U1, and the other end links to each other with the non-earth terminal of common mode capacitor C Y3.
The pin 5 of Power Factor Correction Control chip U1 is the zero current detection input pin, link to each other with 4 ends of high frequency transformer TF1 through resistance R 16, one end of resistance R 17 links to each other with the pin 8 of Power Factor Correction Control chip U1, the other end links to each other with the negative electrode of diode D2, and the anode of diode D2 links to each other with 4 ends of high frequency transformer TF1.
The pin 6 of Power Factor Correction Control chip U1 links to each other with the non-earth terminal of common mode capacitor C Y3.
Switching signal change-over circuit 42 is a core with metal-oxide-semiconductor Q1, wherein:
The drain electrode of metal-oxide-semiconductor Q1 connects the anode of diode D1, and the negative electrode of diode D1 meets high level HV+ successively after capacitor C 3 and resistance R 3, and resistance R 4 is connected between the negative electrode of high level HV+ and diode D1.
First primary coil comprises 1 end and 2 ends, 1 termination high level HV+, the drain electrode of metal-oxide-semiconductor Q1 in the 2 termination switching signal change-over circuits 42.
Second primary coil comprises 3 ends and 4 ends, the anode of diode D2 in the 3 termination control circuits 41, the non-earth terminal of 4 termination common mode capacitance CY3.
First secondary coil comprises 5 ends and 6 ends, connects output rectification and filter circuit 4.
The second subprime coil comprises 7 ends and 8 ends, output rectification of 7 terminations and filter circuit 4,8 end ground connection.
In the foregoing circuit structure, the pin 1 of Power Factor Correction Control chip U1 receives the signal of sampling and amplifying circuit 5 feedbacks, pin 7 output pwm control signals are given the grid of metal-oxide-semiconductor Q1, conducting and the turn-off time of control metal-oxide-semiconductor Q1, the action of metal-oxide-semiconductor Q1 has determined high frequency transformer TF1 to be operated in the energy storage state or the state that releases energy, thereby the output parameter of control circuit so constantly sends control signal according to the sampling feedback signal, thereby reaches the purpose of circuit output constant current constant voltage control.
Fig. 5 shows the structure of output rectification and filter circuit in the constant current circuit with high power factor that the embodiment of the invention provides, and for convenience of explanation, only shows the part relevant with the embodiment of the invention.
The alternating current of output rectification and 4 pairs of inputs of filter circuit carries out rectification, and the output ripple direct current comprises resistance R 23, R41, R42, diode D4, and electrochemical capacitor C10, C11, C12, C13, C14, C15 and capacitor C 24, wherein:
The positive pole of electrochemical capacitor C10, C11, C12, C13, C14, C15 interconnects, and negative pole interconnects and ground connection.
Electrochemical capacitor C10 connects the negative electrode of diode D4, the anode of diode D4 connects 5 ends of transformer TF1 first secondary coil in Power Conversion and the circuit of power factor correction 3 and an end of resistance R 23, and the other end of resistance R 23 connects the positive pole of electrochemical capacitor C11 through capacitor C 9.
One end ground connection of resistance R 41, the other end is LED-, the positive pole of a termination capacitor C15 of capacitor C 24, another termination LED-, a termination LED-of resistance R 42, the positive pole of another termination capacitor C 15, the just very LED+ of capacitor C 15, LED+ is 4. output, LED-is 5. output.
Fig. 6 illustrates the structure of sampling and amplifying circuit in the constant current circuit with high power factor that the embodiment of the invention provides, and for convenience of explanation, only shows the part relevant with the embodiment of the invention.
Sampling and amplifying circuit 5 comprise operational amplifier U3 and peripheral circuit, and described peripheral circuit comprises photoelectrical coupler U2A, resistance R 24～R40, capacitor C 16～C23, diode D5, D15, D16 and voltage-stabiliser tube Z2.
The pin 1 of operational amplifier U3 connects an end of capacitor C 18, resistance R 30 respectively, the end of the other end connecting resistance R31 of capacitor C 18, the pin 2 of another termination operational amplifier U3 of resistance R 31, the negative electrode of resistance R 30 another terminating diode D15.The anode of diode D15 connects the anode of diode D16, and the negative electrode of diode D16 links to each other with an end of resistance R 40, the pin 7 of another termination operational amplifier U3 of resistance R 40.
The pin 2 of operational amplifier U3 is an end of connecting resistance R29 and capacitor C 19 respectively, the other end of resistance R 29 with connect the 4. output of exporting rectification and filter circuit 4, the pin 3 of another termination operational amplifier U3 of capacitor C 19 after resistance R 28 is connected.
The pin 2 of operational amplifier U3 also is connected with an end of resistance R 34, the other end ground connection of resistance R 34, and resistance R 35 is in parallel with resistance R 34.
The pin 3 of operational amplifier U3 links to each other with an end of resistance R 32, the other end connecting resistance R24 of resistance R 32, the negative electrode of another terminating diode D5 of resistance R 24, the anode of diode D5 links to each other with 7 ends of Power Conversion and circuit of power factor correction 3 medium-high frequency transformer TF1 second subprime coils.
The pin 3 of operational amplifier U3 also links to each other with an end of resistance R 33, the pin 5 of another termination operational amplifier U3 of resistance R 33.
The pin 5 of operational amplifier U3 links to each other with an end of capacitor C 23, the other end ground connection of capacitor C 23.
The pin 5 of operational amplifier U3 also links to each other with an end of resistance R 36, the other end ground connection of resistance R 36, and resistance R 37 is in parallel with resistance R 36.
The pin 6 of operational amplifier U3 connects an end of capacitor C 22, resistance R 38, resistance R 39 respectively, the other end ground connection of capacitor C 22, another termination output rectification of resistance R 38 and the 5. output of filter circuit 4, another termination capacitor C 21 of resistance R 39, the pin 7 of another termination operational amplifier U3 of capacitor C 21.
The pin 8 of operational amplifier U3 connects an end of capacitor C 20, resistance R 26, the other end ground connection of capacitor C 20, the negative electrode of another termination voltage-stabiliser tube Z2 of resistance R 26, the anode of voltage-stabiliser tube Z2 is an end of connecting resistance R27, capacitor C 16 respectively, the other end ground connection of resistance R 27, capacitor C 16.
The negative electrode of voltage-stabiliser tube Z2 connects positive pole and the resistance R 25 of electrochemical capacitor C17 respectively, the minus earth of electrochemical capacitor C17, the other end of resistance R 25 links to each other with the pin 1 of photoelectrical coupler U2A, and the pin 2 of photoelectrical coupler U2A connects the common positive contact of diode D15 and D16.
Operational amplifier U3 takes a sample to voltage and current, by photoelectrical coupler U2A signal feedback is arrived Power Factor Correction Control chip U1, and Power Factor Correction Control chip U1 regulates according to the sampling feedback signal, thereby makes output reach constant current constant voltage.
The embodiment of the invention can be applied in power supply product such as UPS, in the high-frequency switch rectifying power supply etc., can reduce harmonic current to greatest extent.
From the above, in the constant current circuit with high power factor that the embodiment of the invention provides, the electric main inlet is connected to fuse F1, antisurge thermistor VR1 and anti-lightning strike piezo-resistance NTC, and circuit is played a protective role.Electromagnetic compatibility module 1 can suppress the conducted interference in the circuit.Differential mode filter inductance L1, L1A and differential mode capacitor CX2 can suppress the differential mode interference in the circuit effectively, and common mode inductance L2 and common mode capacitance CY1, CY2 can suppress the common mode disturbances in the circuit effectively.
Input rectifying and the filter circuit 2 of the output of electromagnetic compatibility module 1 through forming by 4 diodes, interchange is become pulsating direct current, the single-ended flyback translation circuit of pulsating direct current through forming by Power Factor Correction Control chip U1 and metal-oxide-semiconductor, high frequency transformer.Output is taken a sample to voltage and current by operational amplifier U3, by photoelectrical coupler U2A with signal feedback to the pin 1 of Power Factor Correction Control chip U1, realize adjusting, thereby make output reach constant current constant voltage the PWM duty ratio.
In addition, Power Factor Correction Control chip U1 also has the effect of power factor correction, in the scope of input AC civil power at 100V-240V the time, and PF＞0.9.
The constant current circuit with high power factor that the embodiment of the invention provides adopts the Power Factor Correction Control chip, constitute the single-ended flyback topological circuit, can reduce harmonic current effectively, improve the harmonic pollution and the input power factor of electrical network, realized high power factor constant current output, reduced one-level circuit of power factor correction (DC-DC) simultaneously, simple and reliable, cost is low.
The above only is preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of being done within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a constant current circuit with high power factor is characterized in that, described constant current circuit with high power factor comprises:
The electromagnetic compatibility module is used for receiving exchanging and imports, and suppresses the conducted interference in the circuit;
Input rectifying and filter circuit are used for the AC rectification of described electromagnetic compatibility module output is become pulsating direct current;
Power Conversion and circuit of power factor correction are used for according to the sampling feedback signal Power Conversion and power factor correction being carried out in described pulsating direct current;
Output rectification and filter circuit are used for the electric current of described Power Conversion and circuit of power factor correction output is carried out rectification and filtering, improve output waveform; And
Sampling and amplifying circuit are used for the voltage and current of described output rectification and filter circuit output is taken a sample, and the feedback signal of will taking a sample feeds back to described Power Conversion and circuit of power factor correction.
2. constant current circuit with high power factor as claimed in claim 1 is characterized in that, described electromagnetic compatibility module adopts the differential mode interference in differential mode capacitor and the differential mode filter inductance inhibition circuit, adopts the common mode disturbances in common mode capacitance and the common mode inductance inhibition circuit.
3. constant current circuit with high power factor as claimed in claim 1 is characterized in that, described Power Conversion and circuit of power factor correction comprise:
Control circuit is used for according to described sampling feedback signal output corresponding PWM;
The switching signal change-over circuit is used for described pwm control signal is converted into switch actuating signals;
High frequency transformer is used for carrying out energy storage and releasing energy according to described switch actuating signals, and output parameter is adjusted; And
Common mode capacitance CY3 is used for suppressing the common mode disturbances of circuit.
4. constant current circuit with high power factor as claimed in claim 3 is characterized in that, described control circuit comprises a Power Factor Correction Control chip and a peripheral module;
Described peripheral module comprises:
The operating voltage module is used for providing operating voltage to described Power Factor Correction Control chip;
The error amplifier module is used to receive described sampling feedback signal, is transferred to described Power Factor Correction Control chip and handles; And
Drive output module, be used to export the pwm control signal that described Power Factor Correction Control chip produces according to the sampling feedback signal.
5. constant current circuit with high power factor as claimed in claim 4 is characterized in that, described operating voltage module comprises resistance R 8, resistance R 9 and resistance R 10, wherein:
Described resistance R 8, R9, R10 are series between the operating voltage pin of high level and described Power Factor Correction Control chip successively.
6. constant current circuit with high power factor as claimed in claim 4 is characterized in that, described error amplifier module comprises optocoupler PC1, resistance R 12, R13, R14, R15 and capacitor C 7, C8, wherein:
One end of described resistance R 12 links to each other with the emitter of described optocoupler PC1, the error amplifier input pin of the described Power Factor Correction Control chip of another termination;
Described capacitor C 8, C7 are series between the error amplifier output pin and input pin of described Power Factor Correction Control chip;
Described resistance R 13 is in parallel with described capacitor C 8;
After described resistance R 14, the R15 parallel connection, an end links to each other with the non-earth terminal of described common mode capacitance CY3, and the other end links to each other with the emitter of described optocoupler PC1.
7. constant current circuit with high power factor as claimed in claim 4 is characterized in that, described switching signal change-over circuit includes metal-oxide-semiconductor Q1;
Described driving output module comprises resistance R 18, resistance R 19, resistance R 20, resistance R 21, resistance R 22, diode D3 and capacitor C 9, wherein:
Described resistance R 22, R21 are series between the grid of the driver output pin of described Power Factor Correction Control chip and metal-oxide-semiconductor Q1;
The negative electrode of described diode D3 links to each other with the driver output pin of described Power Factor Correction Control chip, and anode links to each other with the contact of described resistance R 22 and R21;
One end of described resistance R 20 links to each other with the grid of described metal-oxide-semiconductor Q1, and the other end links to each other with the non-earth terminal of described common mode capacitance CY3;
Described resistance R 19 is connected between the PWM comparator input pin of the source electrode of described metal-oxide-semiconductor Q1 and described Power Factor Correction Control chip;
One end of described resistance R 18 links to each other with the source electrode of described metal-oxide-semiconductor Q1, and the other end links to each other with the non-earth terminal of described common mode capacitance CY3;
Described capacitor C 9 one ends link to each other the non-earth terminal of the described common mode capacitance CY3 of another termination with the PWM comparator input pin of described Power Factor Correction Control chip.
8. constant current circuit with high power factor as claimed in claim 7 is characterized in that, described switching signal change-over circuit further comprises diode D1, capacitor C 3, resistance R 3 and resistance R 4;
The drain electrode of described metal-oxide-semiconductor Q1 connects the anode of described diode D1, and the negative electrode of described diode D1 meets high level HV+ successively after described capacitor C 3 and described resistance R 3, and described resistance R 4 is connected between the negative electrode of high level HV+ and described diode D1.
9. constant current circuit with high power factor as claimed in claim 1 is characterized in that described sampling and amplifying circuit comprise an operational amplifier and peripheral circuit.
10. a power supply comprises constant current circuit with high power factor, it is characterized in that, described constant current circuit with high power factor is the described constant current circuit with high power factor of each claim in the claim 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010189501.0A CN101860237B (en) | 2010-06-01 | 2010-06-01 | High-power factor constant-current circuit and power source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010189501.0A CN101860237B (en) | 2010-06-01 | 2010-06-01 | High-power factor constant-current circuit and power source |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101860237A true CN101860237A (en) | 2010-10-13 |
| CN101860237B CN101860237B (en) | 2014-01-29 |
Family
ID=42945937
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010189501.0A Active CN101860237B (en) | 2010-06-01 | 2010-06-01 | High-power factor constant-current circuit and power source |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101860237B (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102710137A (en) * | 2012-05-25 | 2012-10-03 | 无锡实益达电子有限公司 | Low power switch power supply with high power factor and low current ripple |
| CN103346759A (en) * | 2013-07-23 | 2013-10-09 | 郁百超 | Micro-power-consumption power frequency pulse width modulation switch power source |
| CN103887965A (en) * | 2012-12-19 | 2014-06-25 | 研祥智能科技股份有限公司 | Power supply design circuit with high-level EMC and safety regulation performance |
| CN105281559A (en) * | 2015-11-27 | 2016-01-27 | 黄敏超 | Electromagnetic interference suppression structure and electrical energy converter provided with same |
| CN105356740A (en) * | 2015-11-27 | 2016-02-24 | 黄敏超 | Electric energy converter with electromagnetic interference suppression structure |
| CN105375756A (en) * | 2015-11-11 | 2016-03-02 | 华为技术有限公司 | Method and device for adjusting conducted emission of switch mode power supply |
| CN105491758A (en) * | 2015-12-11 | 2016-04-13 | 中山市尊宝实业有限公司 | New energy-efficiency standard energy-saving circuit with high power factor and ultra-low stand-by power consumption |
| CN105682294A (en) * | 2016-03-10 | 2016-06-15 | 深圳市通普科技有限公司 | Led driving power supply |
| CN109149964A (en) * | 2018-08-28 | 2019-01-04 | 中国北方发动机研究所(天津) | A kind of alternator for vehicle power rectifier circuit with over-current over-voltage protection function |
| CN109347319A (en) * | 2018-09-30 | 2019-02-15 | 惠州三华工业有限公司 | Efficient filtering circuit and power supply output system |
| CN110856316A (en) * | 2019-12-19 | 2020-02-28 | 福建省中科生物股份有限公司 | Plant lighting system and method for improving light utilization rate |
| CN112803562A (en) * | 2021-01-29 | 2021-05-14 | 泉州市贝瓦电子技术有限公司 | Wide-range voltage-adjustable current-adjustable power supply charging device |
| CN112994805A (en) * | 2019-12-12 | 2021-06-18 | 北京铁路信号有限公司 | Power detection feedback circuit and antenna equipment system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6191564B1 (en) * | 1999-11-24 | 2001-02-20 | Lucent Technologies Inc. | Power factor correcting electrical converter apparatus |
| CN201234373Y (en) * | 2008-06-27 | 2009-05-06 | 深圳市德彩光电有限公司 | Series connection flyback converter applied on LED fluorescent lamp |
-
2010
- 2010-06-01 CN CN201010189501.0A patent/CN101860237B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6191564B1 (en) * | 1999-11-24 | 2001-02-20 | Lucent Technologies Inc. | Power factor correcting electrical converter apparatus |
| CN201234373Y (en) * | 2008-06-27 | 2009-05-06 | 深圳市德彩光电有限公司 | Series connection flyback converter applied on LED fluorescent lamp |
Non-Patent Citations (1)
| Title |
|---|
| 梁凯等: "基于TOPSwitch-GX芯片的开关电源设计", 《电源技术应用》, vol. 10, no. 6, 15 June 2007 (2007-06-15) * |
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102710137A (en) * | 2012-05-25 | 2012-10-03 | 无锡实益达电子有限公司 | Low power switch power supply with high power factor and low current ripple |
| CN103887965B (en) * | 2012-12-19 | 2018-05-29 | 浙江研祥智能科技有限公司 | Power Management Design circuit with high-grade EMC and safety performance |
| CN103887965A (en) * | 2012-12-19 | 2014-06-25 | 研祥智能科技股份有限公司 | Power supply design circuit with high-level EMC and safety regulation performance |
| CN103346759A (en) * | 2013-07-23 | 2013-10-09 | 郁百超 | Micro-power-consumption power frequency pulse width modulation switch power source |
| CN103346759B (en) * | 2013-07-23 | 2016-01-13 | 郁百超 | Micro-power-consumptpower power frequency pulse width modulation switch power source |
| CN105375756B (en) * | 2015-11-11 | 2019-05-24 | 华为技术有限公司 | The method and apparatus of the Conduction Interference of regulating switch power supply |
| CN105375756A (en) * | 2015-11-11 | 2016-03-02 | 华为技术有限公司 | Method and device for adjusting conducted emission of switch mode power supply |
| CN105281559A (en) * | 2015-11-27 | 2016-01-27 | 黄敏超 | Electromagnetic interference suppression structure and electrical energy converter provided with same |
| CN105356740A (en) * | 2015-11-27 | 2016-02-24 | 黄敏超 | Electric energy converter with electromagnetic interference suppression structure |
| CN105356740B (en) * | 2015-11-27 | 2019-06-28 | 敏业信息科技（上海）有限公司 | Inhibit the electrical energy transformer of structure with electromagnetic interference |
| CN105491758A (en) * | 2015-12-11 | 2016-04-13 | 中山市尊宝实业有限公司 | New energy-efficiency standard energy-saving circuit with high power factor and ultra-low stand-by power consumption |
| CN105682294A (en) * | 2016-03-10 | 2016-06-15 | 深圳市通普科技有限公司 | Led driving power supply |
| CN109149964A (en) * | 2018-08-28 | 2019-01-04 | 中国北方发动机研究所(天津) | A kind of alternator for vehicle power rectifier circuit with over-current over-voltage protection function |
| CN109347319A (en) * | 2018-09-30 | 2019-02-15 | 惠州三华工业有限公司 | Efficient filtering circuit and power supply output system |
| CN112994805A (en) * | 2019-12-12 | 2021-06-18 | 北京铁路信号有限公司 | Power detection feedback circuit and antenna equipment system |
| CN112994805B (en) * | 2019-12-12 | 2022-08-23 | 北京铁路信号有限公司 | Power detection feedback circuit and antenna equipment system |
| CN110856316A (en) * | 2019-12-19 | 2020-02-28 | 福建省中科生物股份有限公司 | Plant lighting system and method for improving light utilization rate |
| CN112803562A (en) * | 2021-01-29 | 2021-05-14 | 泉州市贝瓦电子技术有限公司 | Wide-range voltage-adjustable current-adjustable power supply charging device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101860237B (en) | 2014-01-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101860237B (en) | High-power factor constant-current circuit and power source | |
| CN106740220B (en) | Wireless charging circuit of constant-current constant-voltage composite topology | |
| CN108448913A (en) | A kind of isolated form AC-DC converter of the single stage type based on crisscross parallel non-bridge PFC circuits and LLC resonance | |
| CN101394091B (en) | Voltage feedback single-stage power factor calibrating circuit | |
| CN105846696A (en) | Two-stage type AC-DC converter and control method thereof | |
| CN110048520A (en) | Primary side has the wireless charging device of C-LCC compensation network | |
| CN101651347B (en) | Parallel-connection type active power filter | |
| CN110048496A (en) | A kind of low-cost wireless method of electric energy transfer and device | |
| CN202750023U (en) | Current type single-stage isolation high-frequency switch power supply without alternating current / direct current (AC/DC) rectifier bridge | |
| CN202918023U (en) | Battery management power module | |
| CN111049182A (en) | Five-level common-ground type single-phase non-isolated photovoltaic grid-connected inverter circuit and modulation method thereof | |
| CN102291020A (en) | Alternating-current push-pull conversion-single-diode rectification AC-DC (alternating current-to-direct current) converter | |
| CN102810986B (en) | A kind of series topology LED switch power circuit | |
| CN102412740A (en) | Multiphase AC-DC (alternating current-direct current) isolating conversion circuit and multiphase AC-DC power supply | |
| CN110797991A (en) | kW-level power wireless electric energy transmission system based on relay converter | |
| CN203590040U (en) | Power supply circuit and LED street lamp | |
| CN206452314U (en) | A kind of Switching Power Supply | |
| CN201860500U (en) | Electronic ballast for fluorescent lamp | |
| CN209692434U (en) | A kind of low-cost wireless power transfer with voltage regulation function | |
| CN208508596U (en) | A kind of PFC-LLC charger | |
| CN101753035A (en) | Combined type push-pull straight convertor | |
| CN206180893U (en) | A multistage electric energy transfer circuit of high power density for wind power generation is incorporated into power networks | |
| CN209435116U (en) | A kind of power control circuit and equipment | |
| CN217693115U (en) | Novel Sepic power factor correction converter | |
| CN203896183U (en) | Single-phase-input high-power power supply circuit with active power factor correction |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |