CN205051940U - Light modulatable LED drive power supply - Google Patents
Light modulatable LED drive power supply Download PDFInfo
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- CN205051940U CN205051940U CN201520822349.3U CN201520822349U CN205051940U CN 205051940 U CN205051940 U CN 205051940U CN 201520822349 U CN201520822349 U CN 201520822349U CN 205051940 U CN205051940 U CN 205051940U
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Abstract
The utility model belongs to the technical field of LED lighting technology and specifically relates to a light modulatable LED drive power supply is related to. Silicon controlled rectifier ware input be connected with the NULL power, silicon controlled rectifier ware output is connected with bridge type rectifier circuit and supplementary rectifier circuit input respectively, bridge type rectifier circuit and supplementary rectifier circuit's output is connected with APFC circuit input end respectively, APFC circuit output is connected with the isolation transformer input, the isolation transformer output is connected with NULL 0 circuit input end, the output and the LED load input of NULL 0 circuit are connected. The utility model discloses a supplementary rectifier circuit and dimmer circuit have eliminated LED load scintillation basically for the silicon controlled rectifier ware can be better the load of matching LED. The utility model discloses it comes simple structure, reliable operation to improve based on traditional alternating load silicon controlled rectifier circuit.
Description
Technical field
The utility model relates to technical field of LED illumination, specifically relates to a kind of Dimmable LED driving power.
Background technology
Along with LED is in the different application demand of every field, LED drive circuit is also in constantly progressive and development.Relative to conventional light source, LED has significant advantage.
In order to give full play to LED advantage, the highly efficient driver circuit matched with it must be developed, at present so a technical bottleneck of restriction LED development be in the future LED drive power system, one whether efficient LED drive system directly affect light efficiency and the life-span of LED.Develop low cost, high efficiency LED drive system is very necessary.
LED wants to realize tunable optical, and the variable phase angle that its power supply must can detect controllable silicon controller exports, to adjust the electric current flowing to LED.While maintenance dimmer normally works, accomplish that this point is very difficult, often cause performance not good.Problem can show as the problems such as flicker and message noise.These bad phenomenon are normally caused by factors such as false triggering or too early shutoff controllable silicons.The basic reason of false triggering has occurred current oscillation when controlled silicon conducting.
Summary of the invention
The technical problems to be solved in the utility model is the deficiency existed for prior art, provides one to eliminate LED load scintillation, makes controllable silicon dimmer can mate the Dimmable LED driving power of LED load preferably.
A kind of Dimmable LED driving power of the utility model is achieved by following technical proposals: a kind of Dimmable LED driving power comprises controllable silicon dimmer, rectifier circuit, auxiliary rectifier circuit, APFC circuit, isolating transformer, output driving circuit, light adjusting circuit, comparator, cooling circuit, described controllable silicon dimmer input is connected with alternating current input power supplying, controllable silicon dimmer output is connected with bridge rectifier and auxiliary rectifier circuit input respectively, bridge rectifier is connected with APFC circuit input end respectively with the output of auxiliary rectifier circuit, APFC circuit output end is connected with isolating transformer input, isolating transformer output is connected with output driving circuit input, the output of output driving circuit is connected with LED load input.
A kind of Dimmable LED driving power of the utility model has following beneficial effect compared with prior art: the utility model proposes a kind of Dimmable LED driving power, for the LED drive power of silicon controlled dimmer for light control, system primarily of controllable silicon dimmer, rectifier circuit, auxiliary rectifier circuit, APFC circuit, isolating transformer, output driving circuit, light adjusting circuit, comparator, cooling circuit composition.This utility model essentially eliminates LED load scintillation by auxiliary rectifier circuit and light adjusting circuit, makes controllable silicon dimmer can mate LED load preferably.The utility model is based on conventional AC load controllable silicon light modulation circuits improvement, and structure is simple, reliable operation.
The utility model utilizes the break-make of controllable silicon dimmer control APFC chip to carry out light modulation to LED load, when regulating controllable silicon dimmer, when the angle of flow of copped wave alternating current changes, then in the cycle, the duty ratio of LED load current signal also changes thereupon, so LED load average current just changes, and therefore achieves the control to LED load electric current by adjustment controllable silicon dimmer.
The utility model is that rectifier circuit devises auxiliary rectifier circuit, and has increased constant-current dimming circuit newly.The utility model, by regulating the break-make of controllable silicon dimmer control APFC chip, changes the size of average output current, realizes the control to LED load.APFC circuit can select UC3854 to be the APFC of core as required.The utility model takes semiconductor refrigerating cooling solution, adopt ADUC824 as semiconductor refrigerating drive circuit core, the power drive of refrigeration adopts full bridge circuit, can complete and drive the bidirectional current of system, complete refrigeration cool-down under the condition of single power supply.
Accompanying drawing explanation
A kind of Dimmable LED driving power of the utility model has following accompanying drawing:
Fig. 1 is a kind of Dimmable LED driving power source system of the utility model structural representation.
Wherein: 1, controllable silicon dimmer; 2, rectifier circuit; 3, auxiliary rectifier circuit; 4, APFC circuit; 5, isolating transformer; 6, output driving circuit; 7, light adjusting circuit; 8, comparator; 9, cooling circuit; 10, LED load; 11, input is exchanged.
Embodiment
Below in conjunction with drawings and Examples, a kind of Dimmable LED driving power of the utility model technical scheme is further described.
As shown in Figure 1, a kind of Dimmable LED driving power comprises controllable silicon dimmer 1, rectifier circuit 2, auxiliary rectifier circuit 3, APFC circuit 4, isolating transformer 5, output driving circuit 6, light adjusting circuit 7, comparator 8, cooling circuit 9, described controllable silicon dimmer 1 input is connected with alternating current input power supplying 11, controllable silicon dimmer 1 output is connected with bridge rectifier 2 and auxiliary rectifier circuit 3 input respectively, bridge rectifier 2 is connected with APFC circuit 4 input respectively with the output of auxiliary rectifier circuit 3, APFC circuit 4 output is connected with isolating transformer 5 input, isolating transformer 5 output is connected with output driving circuit 6 input, the output of output driving circuit 6 is connected with LED load 10 input.
Further, described LED load 10 is connected with light adjusting circuit 7 input, and light adjusting circuit 7 output is connected with comparator 8 input, and comparator 8 output is connected with APFC circuit 4 input.
Further, described cooling circuit 9 output is connected with LED load 10.
Further, described auxiliary rectifier circuit 3 forms system rectification circuit with rectifier circuit 2, powers after connecting controllable silicon dimmer 1 dividing potential drop for APFC circuit 4.
Further, described light adjusting circuit 7 is current constant control light adjusting circuit.
Further, described cooling circuit 9 is the cooling circuit of based semiconductor Refrigeration Technique.
Embodiment 1.
As shown in Figure 1, a kind of Dimmable LED driving power comprises controllable silicon dimmer 1, rectifier circuit 2, auxiliary rectifier circuit 3, APFC circuit 4, isolating transformer 5, output driving circuit 6, light adjusting circuit 7, comparator 8, cooling circuit 9, described controllable silicon dimmer 1 input is connected with alternating current input power supplying 11, controllable silicon dimmer 1 output is connected with bridge rectifier 2 and auxiliary rectifier circuit 3 input respectively, bridge rectifier 2 is connected with APFC circuit 4 input respectively with the output of auxiliary rectifier circuit 3, APFC circuit 4 output is connected with isolating transformer 5 input, isolating transformer 5 output is connected with output driving circuit 6 input, the output of output driving circuit 6 is connected with LED load 10 input.
Further, described LED load 10 is connected with light adjusting circuit 7 input, and light adjusting circuit 7 output is connected with comparator 8 input, and comparator 8 output is connected with APFC circuit 4 input.
Preferably, described cooling circuit 9 output is connected with LED load 10.
Preferably, described auxiliary rectifier circuit 3 forms system rectification circuit with rectifier circuit 2, powers after connecting controllable silicon dimmer 1 dividing potential drop for APFC circuit 4.
Preferably, described light adjusting circuit 7 is current constant control light adjusting circuit.
Preferably, described cooling circuit 9 is the cooling circuit of based semiconductor Refrigeration Technique.
The utility model exemplifying embodiment is as follows:
System is primarily of controllable silicon dimmer, and rectifier circuit, auxiliary rectifier circuit, APFC circuit, isolating transformer, output driving circuit, light adjusting circuit, comparator, cooling circuit forms.System utilizes the break-make of controllable silicon dimmer control APFC chip to carry out light modulation to LED load, when regulating controllable silicon dimmer, when the angle of flow of copped wave alternating current changes, then in the cycle, the duty ratio of LED load current signal also changes thereupon, so LED load average current just changes, and therefore achieves the control to LED load electric current by adjustment controllable silicon dimmer.
The utility model is that rectifier circuit devises auxiliary rectifier circuit, and has increased constant-current dimming circuit newly.The utility model, by regulating the break-make of controllable silicon dimmer control APFC chip, changes the size of average output current, realizes the control to LED load.APFC circuit can select UC3854 to be the APFC of core as required.
Bridge rectifier Main Function converts alternating current to direct current, can select DF06S rectifier bridge, and the introducing reason of auxiliary rectifier circuit is mainly avoided silicon controlled false triggering or turns off too early, thus cause the problems such as LED load flicker and message noise.Auxiliary rectifier circuit is by two rectifier diodes, and current-limiting resistance, bleeder resistor, filter capacitor, voltage stabilizing didoe forms.Its principle is that two rectifier diodes of two rectifier diodes and DF06S inside form a new rectifier bridge, is converted to direct current, through current-limiting resistance and earial drainage loop voltage-distributing by by the input voltage after controllable silicon dimmer effect.
Constant-current dimming circuit can select TSM1052 two ore control counter flow controller, and this device not only can work under the wide power voltage scope between 1.7V to 1.8V, can also process minimum input voltage.TSM1052 is integrated with an accurate voltage reference source, two operational amplifiers and a low-side current sensor circuit.Voltage reference source and an operational amplifier constitute voltage control loop, and current-sensing circuit and another one operational amplifier constitute current regulator.Constant-current dimming circuit is made up of double operational control chip TSM1052, current sense resistor and photoelectric coupled device U2B.
In view of the importance of system radiating, system takes semiconductor refrigerating cooling solution, adopt ADUC824 as semiconductor refrigerating drive circuit core, the power drive of refrigeration adopts full bridge circuit, can complete under the condition of single power supply and the bidirectional current of system is driven, complete refrigeration cool-down.
Claims (6)
1. a Dimmable LED driving power, comprise controllable silicon dimmer (1), rectifier circuit (2), auxiliary rectifier circuit (3), APFC circuit (4), isolating transformer (5), output driving circuit (6), light adjusting circuit (7), comparator (8), cooling circuit (9), it is characterized in that: described controllable silicon dimmer (1) input is connected with alternating current input power supplying (11), controllable silicon dimmer (1) output is connected with bridge rectifier (2) and auxiliary rectifier circuit (3) input respectively, bridge rectifier (2) is connected with APFC circuit (4) input respectively with the output of auxiliary rectifier circuit (3), APFC circuit (4) output is connected with isolating transformer (5) input, isolating transformer (5) output is connected with output driving circuit (6) input, the output of output driving circuit (6) is connected with LED load (10) input.
2. Dimmable LED driving power according to claim 1, it is characterized in that: described LED load (10) is connected with light adjusting circuit (7) input, light adjusting circuit (7) output is connected with comparator (8) input, and comparator (8) output is connected with APFC circuit (4) input.
3. Dimmable LED driving power according to claim 1, is characterized in that: described cooling circuit (9) output is connected with LED load (10).
4. Dimmable LED driving power according to claim 1, is characterized in that: described auxiliary rectifier circuit (3) and rectifier circuit (2) form system rectification circuit, is APFC circuit (4) power supply after connecting controllable silicon dimmer (1) dividing potential drop.
5. Dimmable LED driving power according to claim 1, is characterized in that: described light adjusting circuit (7) is current constant control light adjusting circuit.
6. Dimmable LED driving power according to claim 1, is characterized in that: the cooling circuit that described cooling circuit (9) is based semiconductor Refrigeration Technique.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520822349.3U CN205051940U (en) | 2015-10-23 | 2015-10-23 | Light modulatable LED drive power supply |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520822349.3U CN205051940U (en) | 2015-10-23 | 2015-10-23 | Light modulatable LED drive power supply |
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| CN205051940U true CN205051940U (en) | 2016-02-24 |
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| CN201520822349.3U Active CN205051940U (en) | 2015-10-23 | 2015-10-23 | Light modulatable LED drive power supply |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106851948A (en) * | 2017-04-14 | 2017-06-13 | 合肥酷庆信息科技有限公司 | A kind of intelligent lighting light modulation tinting system based on wireless network |
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- 2015-10-23 CN CN201520822349.3U patent/CN205051940U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106851948A (en) * | 2017-04-14 | 2017-06-13 | 合肥酷庆信息科技有限公司 | A kind of intelligent lighting light modulation tinting system based on wireless network |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information |
Inventor after: Wang Long Inventor after: Jing Yongkang Inventor before: Hao Yong |
|
| CB03 | Change of inventor or designer information | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170727 Address after: 810000 No. 166, entrepreneurial road, Midtown, Qinghai, Xining Patentee after: QINGHAI GREEN GRASS OF TECHNOLOGY CO.,LTD. Address before: 810007 Xining Economic Development Zone, Qinghai Road, No. 33 min Patentee before: XINING YUEGUANG SOLAR ENERGY TECHNOLOGY CO.,LTD. |
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| TR01 | Transfer of patent right | ||
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Effective date of registration: 20200511 Granted publication date: 20160224 |
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| PD01 | Discharge of preservation of patent |
Date of cancellation: 20230511 Granted publication date: 20160224 |
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| PD01 | Discharge of preservation of patent | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20230511 Granted publication date: 20160224 |
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