CN201054545Y - Middle power multi-channel output thin switch power supply - Google Patents

Middle power multi-channel output thin switch power supply Download PDF

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Publication number
CN201054545Y
CN201054545Y CNU2007200522702U CN200720052270U CN201054545Y CN 201054545 Y CN201054545 Y CN 201054545Y CN U2007200522702 U CNU2007200522702 U CN U2007200522702U CN 200720052270 U CN200720052270 U CN 200720052270U CN 201054545 Y CN201054545 Y CN 201054545Y
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CN
China
Prior art keywords
circuit
output
power factor
power supply
power
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Expired - Fee Related
Application number
CNU2007200522702U
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Chinese (zh)
Inventor
骆德汉
汪军
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Guangdong University of Technology
Guangdong Real Design Intelligent Technology Co Ltd
Original Assignee
FOSHAN SHUNDE REALDESIGN ELECTRONICS INDUSTRY Co Ltd
Guangdong University of Technology
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Application filed by FOSHAN SHUNDE REALDESIGN ELECTRONICS INDUSTRY Co Ltd, Guangdong University of Technology filed Critical FOSHAN SHUNDE REALDESIGN ELECTRONICS INDUSTRY Co Ltd
Priority to CNU2007200522702U priority Critical patent/CN201054545Y/en
Application granted granted Critical
Publication of CN201054545Y publication Critical patent/CN201054545Y/en
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B70/00Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/10Technologies 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 utility model provides a power multi-output thin type switch power in such fields as household appliance and electronic communication, which comprises an input filter rectifying circuit(1), a power factor correcting circuit(2), a standby mode conversion circuit(3), a semi-bridge driving circuit(4) and an output rectifying filter and feedback circuit(5); wherein, the input end of the power factor correcting circuit (2) is connected with the output end of the input filter rectifying circuit (1), the output end of the power factor correcting circuit(2) is connected with the input end of the semi-bridge driving circuit(4), the input end of the standby mode conversion circuit (3) is connected with the output end of the output rectifying filter and feedback circuit(5), and the output end of the standby mode conversion circuit(3) is connected with the semi-bridge driving circuit(4). Besides, the power factor correcting circuit (2) includes a power factor corrector (L6562D), and the semi-bridge driving circuit (4) includes a high voltage resonance controller (L6598). Apart from providing multi-output, the utility model has advantages of small volume, light weight and wide voltage-stabilizing range.

Description

Middle power multichannel is exported slim Switching Power Supply
Technical field:
The utility model is that a kind of power multichannel that is widely used in the fields such as household electrical appliance, electronic communication is exported slim Switching Power Supply, belongs to the innovative technology of Switching Power Supply.
Background technology:
Switching Power Supply is that the utilization power inverter carries out transformation of electrical energy, and the electric energy through after the conversion can satisfy the electricity consumption requirement of different electrical equipment.In recent years, small-power switching power-supply obtains to use in fields such as general electronics, communication, household electrical appliance and control appliance, but middle power multi-output switch power source Core Technology Research is in the slower development state always, causes its volume big, can not satisfy the demand of current high-end electronic product.
Summary of the invention:
The purpose of this utility model be to consider the problems referred to above and provide that a kind of volume is little, in light weight, multichannel output, the wide middle power multichannel of voltage stabilized range exports slim Switching Power Supply.The utility model can satisfy current high-end electronic product to switch power source function and performance demands, can be widely used in the fields such as household electrical appliance, electronic communication.
The utility model is achieved by the following scheme: include input filter rectifier, circuit of power factor correction, standby mode change-over circuit, half-bridge drive circuit, output filtering and feedback circuit, wherein the input of circuit of power factor correction is connected with the output of input filter rectifier, the output of circuit of power factor correction is connected with the input of half-bridge drive circuit, the input of standby mode change-over circuit is connected with the output of output filtering and feedback circuit, and the output of standby mode change-over circuit is connected with half-bridge drive circuit.
Above-mentioned input filter rectifier 1 includes two around to the common mode choke identical, that the number of turn is identical, be connected and be used for the differential mode capacitor of short circuit differential mode noise electric current between zero line and the live wire, be connected and be used for the common mode capacitance of short circuit common mode noise current between zero line and the ground, be connected the rectifier bridge of forming by 4 diodes between the elementary winding of two common mode chokes and the secondary winding.
Above-mentioned circuit of power factor correction includes power factor corrector L6562D, divider resistance, the inductive current that inductive current is sampled detects resistance and peripheral circuit thereof, power factor corrector is connected by the output of divider resistance with the rectifier bridge of input filter rectifier, the inductive current detection resistance that inductive current is sampled is connected with the input pin 4 of power factor corrector, and the output pin of power factor corrector is connected with the grid of Q1.Above-mentioned standby mode change-over circuit includes single-chip switching power supply and peripheral circuit thereof.
Above-mentioned half-bridge drive circuit has included controlled resonant converter integrated and the high pressure resonant controller L6598 and the peripheral circuit thereof of high voltage half-bridge driver.
Above-mentioned output filtering and feedback circuit include the output of 5V voltage and feedback circuit and 12V, 24V output and feedback circuit, wherein output of 5V voltage and feedback circuit include phototransistor and peripheral circuit thereof, the collector electrode of phototransistor is connected with the feedback winding of transformer T3, the emitter of phototransistor is connected with the FB pin of single-chip switching power supply, 12V, 24V output and feedback circuit include phototransistor and peripheral circuit thereof, the collector electrode of phototransistor is connected the grounded emitter of phototransistor by the pin of the high pressure resonant controller in resistance and the half-bridge drive circuit.
Power factor corrector of the present utility model is used the PFC power factor correction technology owing to adopt the L6562 control chip, has improved the power factor of the utility model input, improves the conversion efficiency of power supply.In addition, half-bridge drive circuit of the present utility model adopts resonance oscillation semi-bridge drive controlling chip L6598, has enlarged output voltage range of the present utility model and output accuracy, and making output voltage is that multichannel is adjustable.In addition, the utility model adopts thin transformer, makes to the utlity model has light, little, thin characteristics, satisfies high-end electronic product to its function and performance demands.The utility model is that a kind of volume is little, in light weight, multichannel is exported, the wide middle power multichannel of voltage stabilized range is exported slim Switching Power Supply.Can be widely used in the fields such as household electrical appliance, electronic communication.
Description of drawings:
Fig. 1 is a schematic diagram of the present utility model;
Fig. 2 is for importing the circuit diagram of filter rectifier (1) in the utility model;
Fig. 3 is the circuit diagram of circuit of power factor correction in the utility model (2);
Fig. 4 is the circuit diagram of standby mode change-over circuit (3) in the utility model;
Fig. 5 is the circuit diagram of half-bridge drive circuit in the utility model (4);
Fig. 6 is output filtering and the 5V voltage output of feedback circuit (5) and the circuit diagram of feedback circuit in the utility model;
Fig. 7 is the circuit diagram of 12V, the output of 24V voltage and the feedback circuit of output filtering and feedback circuit (5) in the utility model;
Fig. 8 is a circuit diagram of exporting the 33V voltage follower circuit of filtering and feedback circuit (5) in the utility model;
Fig. 9 is the schematic diagram of thin transformer in the utility model;
Figure 10 is the structure chart of thin transformer in the utility model.
Embodiment:
Embodiment:
Schematic diagram of the present utility model as shown in Figure 1, include input filter rectifier 1, circuit of power factor correction 2, standby mode change-over circuit 3, half-bridge drive circuit 4, output filtering and feedback circuit 5, wherein the input of circuit of power factor correction 2 is connected with the output of input filter rectifier 1, the output of circuit of power factor correction 2 is connected with the input of half-bridge drive circuit 4, the input of standby mode change-over circuit 3 is connected with the output of output filtering and feedback circuit 5, and the output of standby mode change-over circuit 3 is connected with half-bridge drive circuit 4.
The circuit diagram of above-mentioned input filter rectifier 1 as shown in Figure 2, include two around to identical, that the number of turn is identical common mode choke L1, L2, be connected and be used for differential mode capacitor C4, C1, the C2 of short circuit differential mode noise electric current between zero line and the live wire, be connected and be used for common mode capacitance C7, the C8 of short circuit common mode noise current between zero line and the ground, be connected the rectifier bridge of forming by 4 diode D3 between the elementary winding of two common mode choke L1, L2 and the secondary winding.
The circuit diagram of above-mentioned circuit of power factor correction 2 as shown in Figure 3, include power factor corrector L6562D, divider resistance R3, R4, the inductive current that inductive current is sampled detects resistance R 17 and peripheral circuit thereof, power factor corrector L6562D is connected with the output of the rectifier bridge of input filter rectifier 1 by divider resistance R3, R4, the inductive current detection resistance R 17 that inductive current is sampled is connected with the input pin 4 of power factor corrector L6562D, and the output pin of power factor corrector L6562D is connected with the grid of Q1.
The circuit diagram of above-mentioned standby mode change-over circuit 3 includes single-chip switching power supply VIPER22A and peripheral circuit thereof as shown in Figure 4.
The circuit diagram of above-mentioned half-bridge drive circuit 4 as shown in Figure 5, the high pressure resonant controller L6598 and the peripheral circuit thereof that have included controlled resonant converter and high voltage half-bridge driver integrated.
The 5V voltage output of above-mentioned output filtering and feedback circuit 5 and the circuit diagram of feedback circuit are as shown in Figure 6, include output of 5V voltage and feedback circuit and 12V, 24V output and feedback circuit, wherein output of 5V voltage and feedback circuit include phototransistor PC3 and peripheral circuit thereof, the collector electrode of phototransistor PC3 is connected with the feedback winding of transformer T3, the emitter of phototransistor PC3 is connected with the FB pin of single-chip switching power supply VIPER22A, 12V, the circuit diagram of 24V output and feedback circuit as shown in Figure 7, include phototransistor PC2 and peripheral circuit thereof, the collector electrode of phototransistor PC2 is connected the grounded emitter of phototransistor PC2 by the pin 4 of the high pressure resonant controller L6598 in resistance R 50 and the half-bridge drive circuit 4.
The schematic diagram of above-mentioned thin transformer includes 3 road direct currents output of 12V, 24V, 33V as shown in Figure 9; Dc output power is 120~200W.Structure chart as shown in figure 10, volume is 40 * 40 * 25mm 3During the utility model work, exchange the input electromagnetic interface filter, the direction that electric current flows through in two windings is opposite, the magnetic flux that produces is cancelled each other, choke presents Low ESR, but when common mode noise current flows through two windings, the magnetic flux that produces leads to addition, this moment, choke presented high impedance, thereby play the effect that suppresses common-mode noise, be connected differential mode capacitor C4, C1, C2 between zero line and the live wire and be used for short circuit differential mode noise electric current, be connected common mode capacitance C7, C8 between zero line (live wire) and the ground and then be used for the short circuit common mode noise current.
The output voltage after the power factor correction and the output voltage of rectifier bridge are input to power factor corrector L6562D through behind the resitstance voltage divider respectively, handle the back conduct with reference to signal through internal multiplier.Inductive current detects and is input to L6562D through 4 pin after 17 pairs of inductive currents of resistance R are sampled, this signal and reference signal compare, voltage reaches threshold value on 4 pin, and when just inductive current rises to peak value, current comparator will stop to drive the grid of Q1, at this moment the electric current among the L descends along the slope, when electric current drops to zero, drive the Q1 conducting again, like this, just can force the variation track of current tracking voltage, realize the adjustment of power factor.
The control mode of VIPER22A is with Controlled in Current Mode and Based, and switching frequency is fixed on 60KHZ.When the output loop load variations, the biasing winding of transformer also can change simultaneously, this will make the electric current that flows to the FB pin also change, when feedback current becomes big, when making the inner ohmically voltage of detection surpass 0.23V, the overcurrent comparator can be exported a silence signal to turn-off MOSFET.
In addition, the inner threshold value in addition of VIPER22A, when the load minimizing, or when holding state, IFB is too little for feedback current, is approximately 12% o'clock of Id (primary side electric current), and promptly about 85mA, VIPer22A enters the burst mode of operation of frequency hopping.Circuit is skipped some switch periods, thereby has reduced equivalent switching frequency, reduces no-load loss.
The implementation method of feedback loop is to utilize output voltage to drive this FB pin by an optical coupler, to guarantee to import out the insulation between the output.
The high pressure resonant controller of the high voltage half-bridge driver of controlled resonant converter that has been integrated of the L6598 in the half-bridge drive circuit 4 and 600V, the lowest operating frequency of oscillator is determined jointly by external electric capacity and resistance, the triangle wave voltage that oscillator produces, through IC inner control logic system circuit, be converted into square-wave pulse, on pin HVG and LVG, export, and driven MOS FET power tube.
Output of 5V voltage and feedback circuit in output filtering and the feedback circuit (5), when the phototransistor conducting of PC3, feedback winding at transformer T3 feeds back to former limit to output current, this feedback current flows to the FB pin of VIPER22A by the phototransistor of PC3, by VIPER22A output current is detected, when output current is excessive, will stop to drive the MOSFET pipe of its inside.When the electric current that flows to the FB pin is too small, just represent that load lightens, this is that VIPER22A will enter burst mode, to reduce no-load loss.Phototransistor (PC2) in 12V, 24V output and the feedback circuit is used to transmit feedback signal (12V, 24V feedback), when phototransistor is worked, it can adjust the electric current that flows on the L6598 pin 4 by resistance R _ f max (being R50), thereby adjust the frequency of oscillator, realize adjustment output voltage.The peak frequency of Rfmax decision oscillator.
The schematic diagram of thin transformer as shown in Figure 9, structure chart as shown in figure 10, volume is 40 * 40 * 25mm 34 road direct currents output (full load) 1A (5V), 2A (12V), 3A (24V), 0.5A (33V); Dc output power is 120-200W.

Claims (7)

1. the power multichannel is exported slim Switching Power Supply in one kind, it is characterized in that including input filter rectifier (1), circuit of power factor correction (2), standby mode change-over circuit (3), half-bridge drive circuit (4), output rectifying and wave-filtering and feedback circuit (5), wherein the input of circuit of power factor correction (2) is connected with the output of input filter rectifier (1), the output of circuit of power factor correction (2) is connected with the input of half-bridge drive circuit (4), the input of standby mode change-over circuit (3) is connected with the output of output rectifying and wave-filtering and feedback circuit (5), and the output of standby mode change-over circuit (3) is connected with half-bridge drive circuit (4).
2. the power multichannel is exported slim Switching Power Supply in according to claim 1, it is characterized in that above-mentioned input filter rectifier (1) includes two around to the common mode choke identical, that the number of turn is identical (L1, L2), be connected and be used for the differential mode capacitor (C4, C1, C2) of short circuit differential mode noise electric current between zero line and the live wire, be connected and be used for the common mode capacitance (C7, C8) of short circuit common mode noise current between zero line and the ground, be connected the rectifier bridge of forming by 4 diodes (D3) between the elementary winding of two common mode chokes (L1, L2) and the secondary winding.
3. the power multichannel is exported slim Switching Power Supply in according to claim 2, it is characterized in that above-mentioned circuit of power factor correction (2) includes power factor corrector (L6562D), divider resistance (R3, R4), the inductive current that inductive current is sampled detects resistance R 17 and peripheral circuit thereof, power factor corrector (L6562D) is by divider resistance (R3, R4) output with the rectifier bridge of importing filter rectifier (1) is connected, the inductive current detection resistance (R17) that inductive current is sampled is connected with the input pin 4 of power factor corrector (L6562D), and the output pin of power factor corrector (L6562D) is connected with the grid of Q1.
4. the power multichannel is exported slim Switching Power Supply in according to claim 3, it is characterized in that above-mentioned standby mode change-over circuit (3) includes single-chip switching power supply (VIPER22A) and peripheral circuit thereof.
5. the power multichannel is exported slim Switching Power Supply in according to claim 3, it is characterized in that above-mentioned half-bridge drive circuit (4) has included controlled resonant converter integrated and the high pressure resonant controller (L6598) and the peripheral circuit thereof of high voltage half-bridge driver.
6. the power multichannel is exported slim Switching Power Supply in according to claim 3, it is characterized in that above-mentioned output filtering and feedback circuit (5) include the output of 5V voltage and feedback circuit and 12V, 24V output and feedback circuit, wherein output of 5V voltage and feedback circuit include phototransistor (PC3) and peripheral circuit thereof, the collector electrode of phototransistor (PC3) is connected with the feedback winding of transformer T3, the emitter of phototransistor (PC3) is connected with the FB pin of single-chip switching power supply (VIPER22A), 12V, 24V output and feedback circuit include phototransistor (PC2) and peripheral circuit thereof, the collector electrode of phototransistor (PC2) is by resistance R 50) be connected the grounded emitter of phototransistor (PC2) with the pin 4 of high pressure resonant controller (L6598) in the half-bridge drive circuit (4).
7. the power multichannel is exported slim Switching Power Supply in according to claim 3, and the volume that it is characterized in that above-mentioned thin transformer is 40 * 40 * 25mm 3It includes 4 road direct currents output of 5V, 12V, 24V, 33V; Dc output power is 120~200W.
CNU2007200522702U 2007-06-01 2007-06-01 Middle power multi-channel output thin switch power supply Expired - Fee Related CN201054545Y (en)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102595739A (en) * 2012-03-09 2012-07-18 新视野光电(郑州)有限公司 LED driving power supply circuit
CN102869145A (en) * 2011-07-09 2013-01-09 深圳市万禧节能科技有限公司 LED (light emitting diode) driving power supply
CN102916571A (en) * 2012-09-29 2013-02-06 西安空间无线电技术研究所 Power supply capable of suppressing low-frequency noises
CN102969902A (en) * 2012-12-17 2013-03-13 南京航空航天大学 Group control method of multiplexed output module power supply with low crossed adjusting rate
CN103001499A (en) * 2012-11-20 2013-03-27 常州能动电子科技有限公司 Medium-power high-pressure input power supply
CN103116392A (en) * 2011-11-16 2013-05-22 天津三星电子有限公司 Multi-displayer centralized power supply system
CN103904918A (en) * 2014-03-05 2014-07-02 象山元明光电科技有限公司 Multi-channel self-adaptive power balance output 50 V direct current power source and power control method thereof

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102869145A (en) * 2011-07-09 2013-01-09 深圳市万禧节能科技有限公司 LED (light emitting diode) driving power supply
CN103116392A (en) * 2011-11-16 2013-05-22 天津三星电子有限公司 Multi-displayer centralized power supply system
CN102595739A (en) * 2012-03-09 2012-07-18 新视野光电(郑州)有限公司 LED driving power supply circuit
CN102595739B (en) * 2012-03-09 2014-05-07 新视野光电(郑州)有限公司 LED driving power supply circuit
CN102916571A (en) * 2012-09-29 2013-02-06 西安空间无线电技术研究所 Power supply capable of suppressing low-frequency noises
CN102916571B (en) * 2012-09-29 2015-04-22 西安空间无线电技术研究所 Power supply capable of suppressing low-frequency noises
CN103001499A (en) * 2012-11-20 2013-03-27 常州能动电子科技有限公司 Medium-power high-pressure input power supply
CN102969902A (en) * 2012-12-17 2013-03-13 南京航空航天大学 Group control method of multiplexed output module power supply with low crossed adjusting rate
CN103904918A (en) * 2014-03-05 2014-07-02 象山元明光电科技有限公司 Multi-channel self-adaptive power balance output 50 V direct current power source and power control method thereof
CN103904918B (en) * 2014-03-05 2017-02-08 象山元明光电科技有限公司 Multi-channel self-adaptive power balance output 50 V direct current power source and power control method thereof

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Address after: 528300 Shunde, Guangdong, Daliang Industrial Park, Fengxiang, Xiang Xiang Road, No. 1

Patentee after: GUANGDONG REAL-DESIGN INTELLIGENT TECHNOLOGY CO., LTD.

Patentee after: Guangdong University of Technology

Address before: 528300 Guangdong city of Foshan province Daliang Huaye Industrial Zone Fengxiang Road No. 1

Patentee before: Foshan Shunde Realdesign Electronics Industry Co., Ltd.

Patentee before: Guangdong University of Technology

C56 Change in the name or address of the patentee

Owner name: GUANGDONG REAL-DESIGN INTELLIGENT TECHNOLOGY CO.,

Free format text: FORMER NAME: FOSHAN SHUNDE REALDESIGN ELECTRONICS INDUSTRY CO., LTD.

CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20080430

Termination date: 20150601

EXPY Termination of patent right or utility model