CN203225917U - LED drive circuit module - Google Patents
LED drive circuit module Download PDFInfo
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- CN203225917U CN203225917U CN 201320100443 CN201320100443U CN203225917U CN 203225917 U CN203225917 U CN 203225917U CN 201320100443 CN201320100443 CN 201320100443 CN 201320100443 U CN201320100443 U CN 201320100443U CN 203225917 U CN203225917 U CN 203225917U
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Abstract
The utility model provides an LED drive circuit module. The LED drive circuit module comprises an LED drive chip and a valley fill circuit, wherein the valley fill circuit comprises a diode D2, a diode D3, a diode D4, an electrolytic capacitor C2, and an electrolytic capacitor C3; the electrolytic capacitor C2 is in serial connection with the diode D2, and the cathode of the electrolytic capacitor C2 is in connection with the cathode of the diode D2; the electrolytic capacitor C3 is in serial connection with the diode D4, and the anode of the electrolytic capacitor C3 is in connection with the anode of the diode D4; the anode of the electrolytic capacitor C2 and the cathode of the diode D4 are in connection with the positive output end of a rectification circuit (1); the cathode of the electrolytic capacitor C3 and the anode of the diode D2 are in connection with the negative output end of the rectification circuit (1); the anode of the diode D3 is in connection with the cathode of the diode D2, and the cathode of the diode D3 is in connection with the anode of the diode D4; and the cathode of the electrolytic capacitor C3 and the cathode of the diode D4 are in connection with a constant current and constant voltage control circuit and a load circuit.
Description
Technical field
The utility model relates to the driver part of LED lighting apparatus, especially the driver part of adjustable LED lighting apparatus.
Background technology
AC/DC converter on the general LED lamp all is connected with electrical network by rectification circuit.The importation generally is made of bridge rectifier and filter capacitor, and the two all belongs to non-linear element.Because the existence of big capacity filter capacitor, make the angle of flow of rectifier diode become very narrow, near the only ability conducting peak value of AC-input voltage causes exchanging input current to produce serious distortion, becomes to be spike, comprised a large amount of harmonic components in this current waveform, not only electrical network is impacted, the active power that also causes exporting after the filtering significantly reduces, and power factor is reduced significantly, simultaneously also make LED lamp pearl impaired easily, the useful life of light fixture is shorter.
The utility model content
The technical problems to be solved in the utility model is, deficiency at the prior art existence, a kind of led drive circuit module is provided, it can increase the angle of flow of rectifier diode, make and exchange input current reduction distortion, effectively improve power factor, not only reduce the influence to electrical network, and prolong the useful life of LED lamp pearl.
The utility model is that the technical scheme that its technical problem of solution adopts is:
The led drive circuit module that the utility model provides, comprise that LED drives chip and fills out the paddy circuit, the described input of filling out the paddy circuit links to each other with rectification circuit, output links to each other with constant-current and constant-voltage control circuit and load circuit, described constant-current and constant-voltage control circuit and load circuit drive chip with described LED and link to each other, wherein:
The described paddy circuit of filling out comprises diode D2, diode D3, diode D4 and electrochemical capacitor C2, electrochemical capacitor C3;
Electrochemical capacitor C2 and diode D2 are in series, and the negative pole of the negative pole of electrochemical capacitor C2 and diode D2 links to each other;
Electrochemical capacitor C3 and diode D4 are in series, and the positive pole of the positive pole of electrochemical capacitor C3 and diode D4 links to each other;
The negative pole of the positive pole of electrochemical capacitor C2 and diode D4 links to each other with the forward output of described rectification circuit (1);
The positive pole of the negative pole of electrochemical capacitor C3 and diode D2 links to each other with the negative sense output of described rectification circuit (1);
The positive pole of diode D3 links to each other with the negative pole of diode D2, and the negative pole of diode D3 links to each other with the positive pole of diode D4;
The negative pole of the negative pole of electrochemical capacitor C3 and diode D4 links to each other with described constant-current and constant-voltage control circuit and load circuit.
In another preference, be parallel with electrochemical capacitor C4 on the series circuit of described diode D4 and electrochemical capacitor C3, the positive pole of electrochemical capacitor C4 links to each other with the negative pole of diode D4, and the negative pole of electrochemical capacitor C4 links to each other with the negative pole of electrochemical capacitor C3.
The beneficial effects of the utility model are: can increase the angle of flow of rectifier diode, make to exchange input current reduction distortion, active power significantly increases, effectively improve power factor, not only reduce the influence to electrical network, and reduce the infringement to the LED lamp, effectively prolong the useful life of LED lamp pearl.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples, in the accompanying drawing:
Fig. 1 is the circuit diagram of led drive circuit module of the present utility model;
Fig. 2 fills out paddy circuit part enlarged diagram among Fig. 1.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with embodiment and accompanying drawing, the utility model is further described:
The led drive circuit module that the utility model provides, comprise that LED drives chip and fills out the paddy circuit, the described input of filling out the paddy circuit links to each other with rectification circuit, output links to each other with constant-current and constant-voltage control circuit and load circuit, described constant-current and constant-voltage control circuit and load circuit drive chip with described LED and link to each other, and wherein: the described paddy circuit of filling out comprises diode D2, diode D3, diode D4 and electrochemical capacitor C2, electrochemical capacitor C3; Electrochemical capacitor C2 and diode D2 are in series, and the negative pole of the negative pole of electrochemical capacitor C2 and diode D2 links to each other; Electrochemical capacitor C3 and diode D4 are in series, and the positive pole of the positive pole of electrochemical capacitor C3 and diode D4 links to each other; The negative pole of the positive pole of electrochemical capacitor C2 and diode D4 links to each other with the forward output of described rectification circuit (1); The positive pole of the negative pole of electrochemical capacitor C3 and diode D2 links to each other with the negative sense output of described rectification circuit (1); The positive pole of diode D3 links to each other with the negative pole of diode D2, and the negative pole of diode D3 links to each other with the positive pole of diode D4; The negative pole of the negative pole of electrochemical capacitor C3 and diode D4 links to each other with described constant-current and constant-voltage control circuit and load circuit.Be parallel with electrochemical capacitor C4 on the series circuit of described diode D4 and electrochemical capacitor C3, the positive pole of electrochemical capacitor C4 links to each other with the negative pole of diode D4, and the negative pole of electrochemical capacitor C4 links to each other with the negative pole of electrochemical capacitor C3.
Passive fill out the paddy circuit (power factor correction, PFC) circuit can increase considerably the angle of flow of rectifying tube, the angle of flow that makes it when positive half cycle expands to 30 °～150 °, the angle of flow during negative half period expands to 210 °～330 °.Like this, waveform just becomes comparison close to sine wave from burst pulse, thereby has improved power factor.This is equivalent to the zone, valley point in the spike current waveform " has been filled and led up " about 91%, so be referred to as to fill out the paddy circuit.The utility model provides fills out the paddy circuit, and C2 and C3 charge with series system, discharge with parallel way.
The led drive circuit module that the utility model provides, give the infrared induction module for power supply by Zener diode D5, Zener diode D6 drives chip power supply to LED, after driver module powers on, Vcs=0V, DRVN is output as height, opens metal-oxide-semiconductor Q1, electric current flows through LEDs, power inductance, metal-oxide-semiconductor Q1, resistance R 12, arrives ground then.Because the electric current in the power inductance can not suddenly change, when electric current is increased to the threshold values of Vcs, DRVN is output as low, close metal-oxide-semiconductor Q1, current circuit is from the power inductance to the sustained diode 7, arrive LEDs again, LED drives the detection of chip Cycle by Cycle and flows through the peak current of R12, thereby realizes constant output current.
The above only is 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., all should be included within the protection range of the present utility model.
Claims (2)
1. led drive circuit module, comprise that LED drives chip and fills out the paddy circuit, the described input of filling out the paddy circuit links to each other with rectification circuit, output links to each other with constant-current and constant-voltage control circuit and load circuit, described constant-current and constant-voltage control circuit and load circuit drive chip with described LED and link to each other, and it is characterized in that:
The described paddy circuit of filling out comprises diode D2, diode D3, diode D4 and electrochemical capacitor C2, electrochemical capacitor C3;
Electrochemical capacitor C2 and diode D2 are in series, and the negative pole of the negative pole of electrochemical capacitor C2 and diode D2 links to each other;
Electrochemical capacitor C3 and diode D4 are in series, and the positive pole of the positive pole of electrochemical capacitor C3 and diode D4 links to each other;
The negative pole of the positive pole of electrochemical capacitor C2 and diode D4 links to each other with the forward output of described rectification circuit (1);
The positive pole of the negative pole of electrochemical capacitor C3 and diode D2 links to each other with the negative sense output of described rectification circuit (1);
The positive pole of diode D3 links to each other with the negative pole of diode D2, and the negative pole of diode D3 links to each other with the positive pole of diode D4;
The negative pole of the negative pole of electrochemical capacitor C3 and diode D4 links to each other with described constant-current and constant-voltage control circuit and load circuit.
2. a kind of led drive circuit module according to claim 1, it is characterized in that: be parallel with electrochemical capacitor C4 on the series circuit of described diode D4 and electrochemical capacitor C3, the positive pole of electrochemical capacitor C4 links to each other with the negative pole of diode D4, and the negative pole of electrochemical capacitor C4 links to each other with the negative pole of electrochemical capacitor C3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320100443 CN203225917U (en) | 2013-03-05 | 2013-03-05 | LED drive circuit module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320100443 CN203225917U (en) | 2013-03-05 | 2013-03-05 | LED drive circuit module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203225917U true CN203225917U (en) | 2013-10-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320100443 Expired - Fee Related CN203225917U (en) | 2013-03-05 | 2013-03-05 | LED drive circuit module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203225917U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104968101A (en) * | 2015-06-23 | 2015-10-07 | 成都亿信标准认证集团有限公司 | Anti-lightning LED power supply protection circuit |
| CN104981064A (en) * | 2015-06-23 | 2015-10-14 | 成都亿信标准认证集团有限公司 | Simple and practical harmonic wave improved LED drive circuit |
| CN104981065A (en) * | 2015-06-23 | 2015-10-14 | 成都亿信标准认证集团有限公司 | LED drive device with valley fill circuit |
| CN105223899A (en) * | 2015-09-28 | 2016-01-06 | 成都贝发信息技术有限公司 | The workshop supervisory system that anti lightning interference performance is strong |
-
2013
- 2013-03-05 CN CN 201320100443 patent/CN203225917U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104968101A (en) * | 2015-06-23 | 2015-10-07 | 成都亿信标准认证集团有限公司 | Anti-lightning LED power supply protection circuit |
| CN104981064A (en) * | 2015-06-23 | 2015-10-14 | 成都亿信标准认证集团有限公司 | Simple and practical harmonic wave improved LED drive circuit |
| CN104981065A (en) * | 2015-06-23 | 2015-10-14 | 成都亿信标准认证集团有限公司 | LED drive device with valley fill circuit |
| CN105223899A (en) * | 2015-09-28 | 2016-01-06 | 成都贝发信息技术有限公司 | The workshop supervisory system that anti lightning interference performance is strong |
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Legal Events
| 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: 20131002 Termination date: 20140305 |