CN202565533U - Long-lifetime resonant-soft-switching LED synchronized driving power supply - Google Patents
Long-lifetime resonant-soft-switching LED synchronized driving power supply Download PDFInfo
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- CN202565533U CN202565533U CN2012201954403U CN201220195440U CN202565533U CN 202565533 U CN202565533 U CN 202565533U CN 2012201954403 U CN2012201954403 U CN 2012201954403U CN 201220195440 U CN201220195440 U CN 201220195440U CN 202565533 U CN202565533 U CN 202565533U
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- 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
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Abstract
The utility model discloses a long-lifetime resonant-soft-switching LED synchronized driving power supply. The LED driving power supply is characterized in that the driving power supply comprises a rectification circuit (1), a power factor correction circuit (2), an energy storage coil L1, a boosting driving tube Q1, a boosting diode D1, a resonant-soft-switching half-bridge circuit (3), half-bridge driving tubes Q2 and Q3, a high-frequency transformer T1, a synchronized rectification circuit (4), rectification MOS tubes Q4 and Q5, and a constant current control circuit (5). The driving power supply has the advantages of long lifetime.
Description
Technical field
The utility model relates to a kind of LED driven in synchronism power supply, specifically long LED resonant type soft-switch driven in synchronism power supply of a kind of life-span.
Background technology
Electrochemical capacitor is all arranged in the existing Switching Power Supply, lost efficacy, had a strong impact on the useful life of Switching Power Supply owing to electrochemical capacitor dries up at the higher occasion electrolyte of temperature easily.The life-span of general electrochemical capacitor is about 8,000 hours.Seriously restricted the normal use of LED illuminating lamp.LED electricity-saving lamp on the market mostly adopts resistance-capacitance depressurization power supply or low power factor Switching Power Supply now, perhaps clear-cut Switching Power Supply of bribing usefulness in market.Exist power supply and the unmatched serious problems of LED illuminating lamp, so make the LED illuminating lamp scrap in advance, general LED illuminating lamp also just can use 1-2, seldom can use 2-3.
Summary of the invention
The purpose of the utility model provides long LED resonant type soft-switch driven in synchronism power supply of a kind of life-span.
The purpose of the utility model realizes through following technical scheme:
A kind of LED long-life resonant type soft-switch driven in synchronism power supply; It is characterized in that: said driving power comprises rectification circuit (1), circuit of power factor correction (2), energy storage coil L1, the driving tube Q1 that boosts, booster diode D1, resonant type soft-switch half-bridge circuit (3); Half-bridge driven pipe Q2, Q3 and high frequency transformer T1, circuit of synchronous rectification (4), rectification metal-oxide-semiconductor Q4, Q5 and constant-current control circuit (5); The direct current outlet side of rectification circuit (1) also is connected to CBB capacitor C 1, and energy storage coil L1 is connected between high direct voltage and the booster diode D1, the other end of booster diode D1 is connected to resonant type soft-switch half-bridge circuit (3) and power supply for it; Energy storage coil L1 links to each other with the negative pole of the direct current output of rectifier (1) with the source electrode that the junction of booster diode D1 is connected to the drain electrode of the driving tube Q1 that boosts, the driving tube Q1 that boosts; The signal output part of circuit of power factor correction (2) is connected to the grid of the driving tube Q1 that boosts; Resonant type soft-switch half-bridge circuit (3) is connected to the negative pole end of booster diode D1 and the negative pole of rectifier (1) output; The elementary end of high frequency transformer T1 through reactance coil L2, be connected to the centre of half-bridge driven power tube Q2, Q3, the other end connects the rectification output negative pole through capacitor C 2.The two ends of T1 level of high frequency transformer meet rectification metal-oxide-semiconductor Q4, Q5 respectively; The grid of rectification metal-oxide-semiconductor is connected to synchronous rectification control chip (4) respectively; Capacitor C 3 is the output dc filter capacitor, and an end A of constant-current control circuit (5) is connected to direct current output V+ end, carries out voltage control; Other end B is connected to the end of load sampling resistor R2, accomplishes current sample; The C of constant-current control circuit (5) is terminated at the control end of resonant type soft-switch half-bridge circuit (2).
The utility model compared with prior art has the following advantages.
The utility model improves the operating frequency of Switching Power Supply, adopts the resonant type soft-switch principle, to reduce the switching loss of metal-oxide-semiconductor, reduces Switching Power Supply self-heating amount, adopts differential mode and common mode inductance and CBB electric capacity to eliminate high order harmonic component; Adopt synchronous rectification, reduce the wastage and raise the efficiency.The LED driving power must be obeyed the specification requirement of LED luminous tube.Make it to be complementary, realize the long-life design of LED driving power with the useful life of LED lamp pearl.
Description of drawings
Fig. 1 is the block diagram of the utility model LED long-life resonant type soft-switch driven in synchronism power supply;
Fig. 2 is the fundamental diagram of the utility model LED long-life resonant type soft-switch driven in synchronism power supply.
Embodiment
Below in conjunction with accompanying drawing the utility model LED long-life resonant type soft-switch driven in synchronism power supply is elaborated.
Like Fig. 1 and shown in Figure 2; The utility model LED long-life resonant type soft-switch driven in synchronism power supply comprises rectification circuit 1, circuit of power factor correction 2, energy storage coil L1, the driving tube Q1 that boosts, booster diode D1, resonant type soft-switch half-bridge circuit 3; Half-bridge driven pipe Q2, Q3 and high frequency transformer T1, circuit of synchronous rectification 4, rectification metal-oxide-semiconductor Q4, Q5 and constant-current control circuit 5; The direct current outlet side of rectification circuit 1 also is connected to CBB capacitor C 1, and energy storage coil L1 is connected between high direct voltage and the booster diode D1, the other end of booster diode D1 is connected to resonant type soft-switch half-bridge circuit 3 and power supply for it; Energy storage coil L1 links to each other with the negative pole of the direct current output of rectifier 1 with the source electrode that the junction of booster diode D1 is connected to the drain electrode of the driving tube Q1 that boosts, the driving tube Q1 that boosts; The signal output part of circuit of power factor correction 2 is connected to the grid of the driving tube Q1 that boosts; Resonant type soft-switch half-bridge circuit 3 is connected to the negative pole end of booster diode D1 and the negative pole of rectifier 1 output; The elementary end of high frequency transformer T1 through reactance coil L2, be connected to the centre of half-bridge driven power tube Q2, Q3, the other end connects the rectification output negative pole through capacitor C 2.The two ends of T1 level of high frequency transformer meet rectification metal-oxide-semiconductor Q4, Q5 respectively; The grid of rectification metal-oxide-semiconductor is connected to synchronous rectification control chip 4 respectively; Capacitor C 3 is the output dc filter capacitor;
end A of constant-current control circuit 5 is connected to direct current output V+ end; Carry out voltage control, other end B is connected to the end of load sampling resistor R2, accomplishes current sample; The C of constant-current control circuit 5 is terminated at the control end of resonant type soft-switch half-bridge circuit 2.
The utility model improves the operating frequency of Switching Power Supply, adopts the resonant type soft-switch principle, to reduce the switching loss of metal-oxide-semiconductor, reduces Switching Power Supply self-heating amount, adopts differential mode and common mode inductance and CBB electric capacity to eliminate high order harmonic component; Adopt synchronous rectification, reduce the wastage and raise the efficiency.The LED driving power must be obeyed the specification requirement of LED luminous tube.Make it to be complementary, realize the long-life design of LED driving power with the useful life of LED lamp pearl.
Claims (1)
1. LED long-life resonant type soft-switch driven in synchronism power supply; It is characterized in that: said driving power comprises rectification circuit (1), circuit of power factor correction (2), energy storage coil L1, the driving tube Q1 that boosts, booster diode D1, resonant type soft-switch half-bridge circuit (3); Half-bridge driven pipe Q2, Q3 and high frequency transformer T1, circuit of synchronous rectification (4), rectification metal-oxide-semiconductor Q4, Q5 and constant-current control circuit (5); The direct current outlet side of rectification circuit (1) also is connected to CBB capacitor C 1, and energy storage coil L1 is connected between high direct voltage and the booster diode D1, the other end of booster diode D1 is connected to resonant type soft-switch half-bridge circuit (3) and power supply for it; Energy storage coil L1 links to each other with the negative pole of the direct current output of rectifier (1) with the source electrode that the junction of booster diode D1 is connected to the drain electrode of the driving tube Q1 that boosts, the driving tube Q1 that boosts; The signal output part of circuit of power factor correction (2) is connected to the grid of the driving tube Q1 that boosts; Resonant type soft-switch half-bridge circuit (3) is connected to the negative pole end of booster diode D1 and the negative pole of rectifier (1) output; The elementary end of high frequency transformer T1 through reactance coil L2, be connected to the centre of half-bridge driven power tube Q2, Q3, the other end connects the rectification output negative pole through capacitor C 2.The two ends of T1 level of high frequency transformer meet rectification metal-oxide-semiconductor Q4, Q5 respectively; The grid of rectification metal-oxide-semiconductor is connected to synchronous rectification control chip (4) respectively; Capacitor C 3 is the output dc filter capacitor, and an end A of constant-current control circuit (5) is connected to direct current output V+ end, carries out voltage control; Other end B is connected to the end of load sampling resistor R2, accomplishes current sample; The C of constant-current control circuit (5) is terminated at the control end of resonant type soft-switch half-bridge circuit (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201954403U CN202565533U (en) | 2012-04-25 | 2012-04-25 | Long-lifetime resonant-soft-switching LED synchronized driving power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201954403U CN202565533U (en) | 2012-04-25 | 2012-04-25 | Long-lifetime resonant-soft-switching LED synchronized driving power supply |
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| Publication Number | Publication Date |
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| CN202565533U true CN202565533U (en) | 2012-11-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201954403U Expired - Fee Related CN202565533U (en) | 2012-04-25 | 2012-04-25 | Long-lifetime resonant-soft-switching LED synchronized driving power supply |
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| CN (1) | CN202565533U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103762859A (en) * | 2014-02-26 | 2014-04-30 | 杨华新 | Non-electrolytic isolated type syntonic switching power supply |
| CN104980052A (en) * | 2015-07-22 | 2015-10-14 | 抚顺市新鸿升照明电子有限责任公司 | Variable frequency electroless constant current drive power supply |
-
2012
- 2012-04-25 CN CN2012201954403U patent/CN202565533U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103762859A (en) * | 2014-02-26 | 2014-04-30 | 杨华新 | Non-electrolytic isolated type syntonic switching power supply |
| CN104980052A (en) * | 2015-07-22 | 2015-10-14 | 抚顺市新鸿升照明电子有限责任公司 | Variable frequency electroless constant current drive power supply |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121128 Termination date: 20130425 |