CN203660889U - LED driving power source circuit - Google Patents
LED driving power source circuit Download PDFInfo
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- CN203660889U CN203660889U CN201320678444.1U CN201320678444U CN203660889U CN 203660889 U CN203660889 U CN 203660889U CN 201320678444 U CN201320678444 U CN 201320678444U CN 203660889 U CN203660889 U CN 203660889U
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Abstract
An LED driving power source circuit is disclosed and relates to the switch power source technology field. Pin 1 of a first connector is connected with one end of a fuse wire; the other end of the fuse wire is respectively connected with one end of a first capacitor, pin 1 of a power source converter, one end of a first electric resistor and one end of a second electric resistor; the other end of the first capacitor is respectively connected with pin 2 of the first connector and pin 2 of the power source converter; pin 3 of the power source converter is respectively connected with one end of a second capacitor, one end of an eighth electric resistor and one end of a first electric inductor; the other end of the first electric inductor is respectively connected with the other end of the eighth electric resistor, one end of a third capacitor, one end of a forth capacitor, one end of a tenth electric resistor, and pin 1 of a high frequency isolation transformer; pin 4 of the power source converter is respectively connected with the other end of the second capacitor and one end of a second electric inductor; the other end of the second electric inductor is connected with the other end of the third capacitor and is earthed; the other end of the forth capacitor is connected with one end of a ninth electric resistor. The LED driving power source circuit is low in cost, stable in performance, simple in circuit, high in efficiency, low in standby power dissipation and saved in energy.
Description
Technical field:
The utility model relates to switch power technology field, is specifically related to a kind of LED driving power circuit.
Background technology:
When the driving power of existing computer uses, its unstable properties, and also cost of manufacture is high, and high in standby power consumption in period, waste energy.
Utility model content:
The purpose of this utility model is to provide a kind of LED driving power circuit, and its cost is low, stable performance, and circuit is simple, and efficiency is high, and stand-by power consumption is low, saves the energy.
In order to solve the existing problem of background technology, the utility model is to adopt following technical scheme: it comprises connector one CN1, connector two CN2, fuse F1, power supply changeover device B1, inductance one L1, inductance two L2, integrated circuit (IC) 1, electric capacity one-electric capacity ten C1-C10, resistance one-resistance 19 R1-R19, diode one-diode three D1-D3, accurate integrated regulator D4, high-frequency isolation transformer TR1, photoelectrical coupler Q1,1 pin of connector one CN1 is connected with one end of fuse F1, the other end of fuse F1 respectively with one end of electric capacity one C1, 1 pin of power supply changeover device B1, one end of resistance one R1, one end of resistance two R2 connects, the other end of electric capacity one C1 respectively with 2 pin of connector one CN1, 2 pin of power supply changeover device B1 connect, 3 pin of power supply changeover device B1 respectively with one end of electric capacity two C2, one end of resistance eight R8, one end of inductance one L1 connects, the other end of inductance one L1 respectively with the other end of resistance eight R8, one end of electric capacity three C3, one end of electric capacity four C4, one end of resistance ten R10, 1 pin of high-frequency isolation transformer TR1 connects, 4 pin of power supply changeover device B1 respectively with the other end of electric capacity two C2, one end of inductance two L2 connects, and the other end of inductance two L2 is connected and ground connection with the other end of electric capacity three C3, and the other end of electric capacity four C4 is connected with one end of resistance nine R9, and the other end of resistance nine R9 divides the other end of another and resistance ten R10, the negative pole of diode one D1 connects, the positive pole of diode one D1 respectively with 3 pin of high-frequency isolation transformer TR1, 5 pin of integrated circuit (IC) 1, 6 pin connect, and 4 pin of high-frequency isolation transformer TR1 are connected with one end of resistance 19 R19, and the other end of resistance 19 R19 is connected with the positive pole of diode two D2, the negative pole of diode two D2 respectively with one end of electric capacity eight C8, one end of electric capacity seven C7, one end of resistance three R3, one end of resistance four R4, one end of resistance five R5, 2 pin of integrated circuit (IC) 1 connect, the other end of resistance three R3 respectively with the other end of resistance four R4, the other end of resistance one R1, the other end of resistance two R2 connects, and the other end of resistance five R5 is connected with 1 pin of integrated circuit (IC) 1,3 pin of integrated circuit (IC) 1 respectively with one end of electric capacity nine C9, 1 pin of photoelectrical coupler Q1 connects, 4 pin of integrated circuit (IC) 1 respectively with one end of resistance six R6, one end of resistance seven R7 connects, the other end of resistance six R6 is connected and ground connection with the other end of resistance seven R7, the other end ground connection of electric capacity nine C9, the 2 pin ground connection of photoelectrical coupler Q1, 3 pin of photoelectrical coupler Q1 are connected with one end of resistance 18 R18 respectively, one end of electric capacity ten C10, 1 pin of accurate integrated regulator D4 connects, and the other end of electric capacity ten C10 is connected with one end of resistance 16 R16, the other end of resistance 16 R16 respectively with one end of resistance 17 R17, 3 pin of accurate integrated regulator D4, one end of resistance 14 R14 connects, and the other end of resistance 14 R14 is connected with one end of resistance 13 R13, the other end of resistance 13 R13 respectively with one end of resistance 15 R15, 1 pin of connector two CN2, one end of electric capacity six C6, the negative pole of diode three D3, one end of electric capacity five C5 connects, the other end of resistance 15 R15 respectively with the other end of resistance 18 R18, 4 pin of photoelectrical coupler Q1 connect, the other end of electric capacity six C6 respectively with 6 pin of high-frequency isolation transformer TR1, 2 pin of connector two CN2 connect, the 5 pin ground connection of high-frequency isolation transformer TR1,7 pin of high-frequency isolation transformer TR1 respectively with the positive pole of diode three D3, one end of resistance 11 R11, one end of resistance 12 R12 connects, the other end of resistance 11 R11 respectively with the other end of resistance 12 R12, the other end of electric capacity five C5 connects.
Operation principle of the present utility model is: one, alternating current access binding post, again through fuse F1 process safety electric capacity, L phase and the N safety electric capacity that is in parallel after fuse, be linked into rectifier bridge rectification output direct current, direct current forms CLC type filter circuit (filter circuit can guarantee that product is within Electromagnetic Radiation Standards) through electric capacity again by electric capacity and two work type inductance, and by elementary (transformer 1PIN-3PIN) high voltage control of the flowing through IC-5PIN of high-frequency isolation transformer and 6PIN by inner metal-oxide-semiconductor (controlling IC is herein OB2358APL), transformer high-voltage input connects between IC-5PIN and 6PIN and goes here and there RCD absorbing circuit (the leakage inductance due to voltage spikes of RCD absorbing circuit energy absorbing high-frequency transformer and the reverse voltage spike of secondary side after transformer, protection IC and output rectifier diode), after get back to electric capacity ground from IC-4PIN through sample resistance and get back to rectifier bridge through CLC filtering again.High frequency transformer carries out isolation coupling and transfers energy to secondary (secondary is output);
Two, from fuse, contact resistance is used as start-up circuit (be connected on alternating current resistance consume power consumption herein little, reduce stand-by power consumption, raise the efficiency) to controlling IC-2PIN;
Three, start-up circuit contact resistance, to IC-1PIN, is used to provide the electric current and voltage of internal drive MOS;
Four, from transformer 4PIN contact resistance again through diode rectification electrochemical capacitor in parallel and low capacity patch capacitor to IC-2PIN, so that the electric current and voltage of the normal need of work of IC to be provided, and can play output over-voltage protection and VCC (IC operating voltage) overvoltage protection;
Five, IC-4PIN contact resistance is used for regulating maximum power, guarantees the overpower protection of product, and short-circuit protection;
Six, IC6PIN-7PIN is to electric capacity ground, and backflow rectifier bridge forms the current/voltage loop assurance circuit of IC and normally works;
Seven, Energy Coupling is arrived primary side by high frequency transformer, after secondary commutation diode rectification, (rectifier diode negative electrode sun level series capacitance resistance absorption due to voltage spikes protection diode reduces electromagnetic radiation) shunt capacitance, to secondary ground, connects output wiring terminal;
Eight, from secondary commutation contact resistance to the anode of the photoelectrical coupler cathode of flowing through, photoelectrical coupler anode and cathode two ends parallel resistance, (carry minimum working current to IC is provided) IC negative electrode (controlling IC is herein 431) the IC anode of flowing through again of flowing through is again got back to secondary ground;
Nine, from rectification, contact resistance dividing potential drop is sampled to IC reference edge, (detecting output voltage size feeds back) IC detects that output electrical signals control photoelectrical coupler passes the signal along to the elementary of photoelectrical coupler, (photoelectrical coupler plays primary and secondary electricity buffer action simultaneously) the photoelectrical coupler primary emission utmost point over the ground, the collector electrode over the ground little capacitor filtering of paster in parallel is transferred to the 3PIN (over the ground little patch capacitor can filtering high frequency clutter) of primary side control IC, thereby reaches constant-current voltage-stabilizing object and complete the work in every of whole power-supply system;
Ten, the negative electrode that is connected to IC from contact resistance dividing potential drop series winding RC composition RC resonant earthed system after rectification compensates (herein RC network can to the correlative compensations such as sampling period frequency, stabilizing circuit).
The utlity model has following beneficial effect: cost is low, stable performance, and circuit is simple, and efficiency is high, and stand-by power consumption is low, saves the energy.
Accompanying drawing explanation:
Fig. 1 is structural representation of the present utility model.
Embodiment:
Referring to Fig. 1, this embodiment adopts following technical scheme: it comprises connector one CN1, connector two CN2, fuse F1, power supply changeover device B1, inductance one L1, inductance two L2, integrated circuit (IC) 1, electric capacity one-electric capacity ten C1-C10, resistance one-resistance 19 R1-R19, diode one-diode three D1-D3, accurate integrated regulator D4, high-frequency isolation transformer TR1, photoelectrical coupler Q1,1 pin of connector one CN1 is connected with one end of fuse F1, the other end of fuse F1 respectively with one end of electric capacity one C1, 1 pin of power supply changeover device B1, one end of resistance one R1, one end of resistance two R2 connects, the other end of electric capacity one C1 respectively with 2 pin of connector one CN1, 2 pin of power supply changeover device B1 connect, 3 pin of power supply changeover device B1 respectively with one end of electric capacity two C2, one end of resistance eight R8, one end of inductance one L1 connects, the other end of inductance one L1 respectively with the other end of resistance eight R8, one end of electric capacity three C3, one end of electric capacity four C4, one end of resistance ten R10, 1 pin of high-frequency isolation transformer TR1 connects, 4 pin of power supply changeover device B1 respectively with the other end of electric capacity two C2, one end of inductance two L2 connects, and the other end of inductance two L2 is connected and ground connection with the other end of electric capacity three C3, and the other end of electric capacity four C4 is connected with one end of resistance nine R9, the other end of resistance nine R9 respectively with the other end of resistance ten R10, the negative pole of diode one D1 connects, the positive pole of diode one D1 respectively with 3 pin of high-frequency isolation transformer TR1, 5 pin of integrated circuit (IC) 1, 6 pin connect, and 4 pin of high-frequency isolation transformer TR1 are connected with one end of resistance 19 R19, and the other end of resistance 19 R19 is connected with the positive pole of diode two D2, the negative pole of diode two D2 respectively with one end of electric capacity eight C8, one end of electric capacity seven C7, one end of resistance three R3, one end of resistance four R4, one end of resistance five R5, 2 pin of integrated circuit (IC) 1 connect, the other end of resistance three R3 respectively with the other end of resistance four R4, the other end of resistance one R1, the other end of resistance two R2 connects, and the other end of resistance five R5 is connected with 1 pin of integrated circuit (IC) 1,3 pin of integrated circuit (IC) 1 respectively with one end of electric capacity nine C9, 1 pin of photoelectrical coupler Q1 connects, 4 pin of integrated circuit (IC) 1 respectively with one end of resistance six R6, one end of resistance seven R7 connects, the other end of resistance six R6 is connected and ground connection with the other end of resistance seven R7, the other end ground connection of electric capacity nine C9, the 2 pin ground connection of photoelectrical coupler Q1, 3 pin of photoelectrical coupler Q1 are connected with one end of resistance 18 R18 respectively, one end of electric capacity ten C10, 1 pin of accurate integrated regulator D4 connects, and the other end of electric capacity ten C10 is connected with one end of resistance 16 R16, the other end of resistance 16 R16 respectively with one end of resistance 17 R17, 3 pin of accurate integrated regulator D4, one end of resistance 14 R14 connects, and the other end of resistance 14 R14 is connected with one end of resistance 13 R13, the other end of resistance 13 R13 respectively with one end of resistance 15 R15, 1 pin of connector two CN2, one end of electric capacity six C6, the negative pole of diode three D3, one end of electric capacity five C5 connects, the other end of resistance 15 R15 respectively with the other end of resistance 18 R18, 4 pin of photoelectrical coupler Q1 connect, the other end of electric capacity six C6 respectively with 6 pin of high-frequency isolation transformer TR1, 2 pin of connector two CN2 connect, the 5 pin ground connection of high-frequency isolation transformer TR1,7 pin of high-frequency isolation transformer TR1 respectively with the positive pole of diode three D3, one end of resistance 11 R11, one end of resistance 12 R12 connects, the other end of resistance 11 R11 respectively with the other end of resistance 12 R12, the other end of electric capacity five C5 connects.
The operation principle of this embodiment is: one, alternating current access binding post, again through fuse F1 process safety electric capacity, L phase and the N safety electric capacity that is in parallel after fuse, be linked into rectifier bridge rectification output direct current, direct current forms CLC type filter circuit (filter circuit can guarantee that product is within Electromagnetic Radiation Standards) through electric capacity again by electric capacity and two work type inductance, and by elementary (transformer 1PIN-3PIN) high voltage control of the flowing through IC-5PIN of high-frequency isolation transformer and 6PIN by inner metal-oxide-semiconductor (controlling IC is herein OB2358APL), transformer high-voltage input connects between IC-5PIN and 6PIN and goes here and there RCD absorbing circuit (the leakage inductance due to voltage spikes of RCD absorbing circuit energy absorbing high-frequency transformer and the reverse voltage spike of secondary side after transformer, protection IC and output rectifier diode), after get back to electric capacity ground from IC-4PIN through sample resistance and get back to rectifier bridge through CLC filtering again.High frequency transformer carries out isolation coupling and transfers energy to secondary (secondary is output);
Two, from fuse, contact resistance is used as start-up circuit (be connected on alternating current resistance consume power consumption herein little, reduce stand-by power consumption, raise the efficiency) to controlling IC-2PIN;
Three, start-up circuit contact resistance, to IC--1PIN, is used to provide the electric current and voltage of internal drive MOS;
Four, from transformer 4PIN contact resistance again through diode rectification electrochemical capacitor in parallel and low capacity patch capacitor to IC-2PIN, so that the electric current and voltage of the normal need of work of IC to be provided, and can play output over-voltage protection and VCC (IC operating voltage) overvoltage protection;
Five, IC-4PIN contact resistance is used for regulating maximum power, guarantees the overpower protection of product, and short-circuit protection;
Six, IC6PIN-7PIN is to electric capacity ground, and backflow rectifier bridge forms the current/voltage loop assurance circuit of IC and normally works;
Seven, Energy Coupling is arrived primary side by high frequency transformer, after secondary commutation diode rectification, (rectifier diode negative electrode sun level series capacitance resistance absorption due to voltage spikes protection diode reduces electromagnetic radiation) shunt capacitance, to secondary ground, connects output wiring terminal;
Eight, from secondary commutation contact resistance to the anode of the photoelectrical coupler cathode of flowing through, photoelectrical coupler anode and cathode two ends parallel resistance, (carry minimum working current to IC is provided) IC negative electrode (controlling IC is herein 431) the IC anode of flowing through again of flowing through is again got back to secondary ground;
Nine, from rectification, contact resistance dividing potential drop is sampled to IC reference edge, (detecting output voltage size feeds back) IC detects that output electrical signals control photoelectrical coupler passes the signal along to the elementary of photoelectrical coupler, (photoelectrical coupler plays primary and secondary electricity buffer action simultaneously) the photoelectrical coupler primary emission utmost point over the ground, the collector electrode over the ground little capacitor filtering of paster in parallel is transferred to the 3PIN (over the ground little patch capacitor can filtering high frequency clutter) of primary side control IC, thereby reaches constant-current voltage-stabilizing object and complete the work in every of whole power-supply system;
Ten, the negative electrode that is connected to IC from contact resistance dividing potential drop series winding RC composition RC resonant earthed system after rectification compensates (herein RC network can to the correlative compensations such as sampling period frequency, stabilizing circuit).
This embodiment has following beneficial effect: cost is low, stable performance, and circuit is simple, and efficiency is high, and stand-by power consumption is low, saves the energy.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection range of the present utility model.
Claims (1)
1.LED driving power circuit, is characterized in that it comprises connector one (CN1), connector two (CN2), fuse (F1), power supply changeover device (B1), inductance one (L1), inductance two (L2), integrated circuit (IC1), electric capacity one-electric capacity ten (C1-C10), resistance one-resistance 19 (R1-R19), diode one-diode three (D1-D3), accurate integrated regulator (D4), high-frequency isolation transformer (TR1), photoelectrical coupler (Q1), 1 pin of connector one (CN1) is connected with one end of fuse (F1), the other end of fuse (F1) respectively with one end of electric capacity one (C1), 1 pin of power supply changeover device (B1), one end of resistance one (R1), one end of resistance two (R2) connects, the other end of electric capacity one (C1) respectively with 2 pin of connector one (CN1), 2 pin of power supply changeover device (B1) connect, 3 pin of power supply changeover device (B1) respectively with one end of electric capacity two (C2), one end of resistance eight (R8), one end of inductance one (L1) connects, the other end of inductance one (L1) respectively with the other end of resistance eight (R8), one end of electric capacity three (C3), one end of electric capacity four (C4), one end of resistance ten (R10), 1 pin of high-frequency isolation transformer (TR1) connects, 4 pin of power supply changeover device (B1) respectively with the other end of electric capacity two (C2), one end of inductance two (L2) connects, the other end of inductance two (L2) is connected and ground connection with the other end of electric capacity three (C3), the other end of electric capacity four (C4) is connected with one end of resistance nine (R9), the other end of resistance nine (R9) respectively with the other end of resistance ten (R10), the negative pole of diode one (D1) connects, the positive pole of diode one (D1) respectively with 3 pin of high-frequency isolation transformer (TR1), 5 pin of integrated circuit (IC1), 6 pin connect, 4 pin of high-frequency isolation transformer (TR1) are connected with one end of resistance 19 (R19), the other end of resistance 19 (R19) is connected with the positive pole of diode two (D2), the negative pole of diode two (D2) respectively with one end of electric capacity eight (C8), one end of electric capacity seven (C7), one end of resistance three (R3), one end of resistance four (R4), one end of resistance five (R5), 2 pin of integrated circuit (IC1) connect, the other end of resistance three (R3) respectively with the other end of resistance four (R4), the other end of resistance one (R1), the other end of resistance two (R2) connects, and the other end of resistance five (R5) is connected with 1 pin of integrated circuit (IC1), 3 pin of integrated circuit (IC1) respectively with one end of electric capacity nine (C9), 1 pin of photoelectrical coupler (Q1) connects, 4 pin of integrated circuit (IC1) respectively with one end of resistance six (R6), one end of resistance seven (R7) connects, the other end of resistance six (R6) is connected and ground connection with the other end of resistance seven (R7), the other end ground connection of electric capacity nine (C9), 2 pin ground connection of photoelectrical coupler (Q1), 3 pin of photoelectrical coupler (Q1) are connected with one end of resistance 18 (R18) respectively, one end of electric capacity ten (C10), 1 pin of accurate integrated regulator (D4) connects, the other end of electric capacity ten (C10) is connected with one end of resistance 16 (R16), the other end of resistance 16 (R16) respectively with one end of resistance 17 (R17), 3 pin of accurate integrated regulator (D4), one end of resistance 14 (R14) connects, the other end of resistance 14 (R14) is connected with one end of resistance 13 (R13), the other end of resistance 13 (R13) respectively with one end of resistance 15 (R15), 1 pin of connector two (CN2), one end of electric capacity six (C6), the negative pole of diode three (D3), one end of electric capacity five (C5) connects, the other end of resistance 15 (R15) respectively with the other end of resistance 18 (R18), 4 pin of photoelectrical coupler (Q1) connect, the other end of electric capacity six (C6) respectively with 6 pin of high-frequency isolation transformer (TR1), 2 pin of connector two (CN2) connect, 5 pin ground connection of high-frequency isolation transformer (TR1), 7 pin of high-frequency isolation transformer (TR1) respectively with the positive pole of diode three (D3), one end of resistance 11 (R11), one end of resistance 12 (R12) connects, the other end of resistance 11 (R11) respectively with the other end of resistance 12 (R12), the other end of electric capacity five (C5) connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320678444.1U CN203660889U (en) | 2013-10-31 | 2013-10-31 | LED driving power source circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320678444.1U CN203660889U (en) | 2013-10-31 | 2013-10-31 | LED driving power source circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203660889U true CN203660889U (en) | 2014-06-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320678444.1U Expired - Fee Related CN203660889U (en) | 2013-10-31 | 2013-10-31 | LED driving power source circuit |
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| Country | Link |
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| CN (1) | CN203660889U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104242616A (en) * | 2014-10-15 | 2014-12-24 | 国家电网公司 | Power supply circuit of multi-functional electric energy meter |
| CN107667464A (en) * | 2015-06-01 | 2018-02-06 | 飞利浦照明控股有限公司 | Led driver and driving method |
-
2013
- 2013-10-31 CN CN201320678444.1U patent/CN203660889U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104242616A (en) * | 2014-10-15 | 2014-12-24 | 国家电网公司 | Power supply circuit of multi-functional electric energy meter |
| CN107667464A (en) * | 2015-06-01 | 2018-02-06 | 飞利浦照明控股有限公司 | Led driver and driving method |
| CN107667464B (en) * | 2015-06-01 | 2020-04-17 | 飞利浦照明控股有限公司 | LED driver and driving method |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140618 Termination date: 20141031 |
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| EXPY | Termination of patent right or utility model |