CN204498405U - Based on the LED drive system that bootstrapping controls - Google Patents
Based on the LED drive system that bootstrapping controls Download PDFInfo
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- CN204498405U CN204498405U CN201420694839.5U CN201420694839U CN204498405U CN 204498405 U CN204498405 U CN 204498405U CN 201420694839 U CN201420694839 U CN 201420694839U CN 204498405 U CN204498405 U CN 204498405U
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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
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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Abstract
The utility model discloses a kind of LED drive system controlled based on bootstrapping, mainly comprise current rectifying and wave filtering circuit, the drive circuit be connected with rectification filter circuit output end, voltage stabilizing circuit, is characterized in that: between drive circuit and voltage stabilizing circuit, be also provided with boostrap circuit; Described boostrap circuit is by triode VT1, field effect transistor Q, the resistance R10 that one end is connected with voltage stabilizing circuit with drive circuit simultaneously, the other end is then connected with the collector electrode of triode VT1, the electric capacity C8 that positive pole is connected with the emitter of triode VT1, negative pole is then connected with voltage stabilizing circuit, the compositions such as the electric capacity C7 that positive pole is connected with the source electrode of field effect transistor Q, negative pole is connected with the negative pole of electric capacity C8; Be provided with boostrap circuit, it effectively can promote the load capacity of drive system, thus can drive more LED group, to meet the demand of people simultaneously.
Description
Technical field
The utility model relates to a kind of drive system, specifically refers to a kind of LED drive system controlled based on bootstrapping.
Background technology
LED, as novel energy-conserving light source, with its environmental protection, the feature such as energy-conservation, the life-span is long, volume is little, is extensively received by people and adopts.Due to the semiconductor device that LED is characteristic sensitivity, have negative temperature characteristic again, therefore in application process, LED drive circuit plays considerable effect for impelling LED to be in stable, reliable operating state.
Along with people's living standard constantly improves, no matter have higher requirement to LED brightness and energy consumption at home or in shop, namely people need, while improving LED brightness further, to need LED to have lower energy consumption.So people just have higher requirement to LED lamp drive circuit.But its load capacity of traditional LED drive system that current people adopt is very limited, can not meet the requirement of people.
Utility model content
The purpose of this utility model is to overcome the very limited defect of current LED driving system loads ability, provides a kind of LED drive system controlled based on bootstrapping that can promote load capacity.
The purpose of this utility model is achieved through the following technical solutions: the LED drive system controlled based on bootstrapping, mainly comprise current rectifying and wave filtering circuit, the drive circuit be connected with rectification filter circuit output end, voltage stabilizing circuit, is also provided with boostrap circuit between drive circuit and voltage stabilizing circuit, described boostrap circuit is by triode VT1, field effect transistor Q, one end is connected with voltage stabilizing circuit with drive circuit simultaneously, the resistance R10 that the other end is then connected with the collector electrode of triode VT1, positive pole is connected with the emitter of triode VT1, the electric capacity C8 that negative pole is then connected with voltage stabilizing circuit, positive pole is connected with the source electrode of field effect transistor Q, the electric capacity C7 that negative pole is connected with the negative pole of electric capacity C8, one end is connected with the base stage of triode VT1, the resistance R6 of other end ground connection after resistance R8, positive pole is connected with the tie point of resistance R8 with resistance R6, the electric capacity C6 of negative pole ground connection after resistance R9, positive pole is connected with drive circuit, the electric capacity C5 that negative pole is then connected with the grid of field effect transistor Q, and one end is connected with the negative pole of electric capacity C5, the resistance R7 that the other end is then connected with the positive pole of electric capacity C6 forms, the drain electrode of described field effect transistor Q is connected with the base stage of triode VT1, and source electrode is connected with the negative pole of electric capacity C6.
Further, described current rectifying and wave filtering circuit is by fuse FU, and resistance R1, diode bridge rectifier U, electric capacity C1 form; Fuse FU is serially connected on an input of diode bridge rectifier U, and resistance R1 is then serially connected on another input of diode bridge rectifier U, and the positive and negative electrode of electric capacity C1 is then serially connected between two outputs of diode bridge rectifier U.
Described drive circuit is by driving chip U1, diode D1, one end is connected with the LN pin of driving chip U1, the electric capacity C2 that the other end is connected with the negative pole of electric capacity C1, one end is connected with the CS2 pin of driving chip U1, the resistance R3 that the other end is then connected with the negative pole of electric capacity C1, one end is connected with the CS1 pin of driving chip U1, the resistance R5 that the other end is then connected with the negative pole of electric capacity C1, one end is connected with the GND pin of driving chip U1, the electric capacity R2 of other end ground connection, one end is connected with the N pole of diode D1, the resistance R4 that the other end is connected with the SOU pin of driving chip U1 after electric capacity C3, and form with the electric capacity C4 that resistance R4 is in parallel, the N pole of described diode D1 is simultaneously with the positive pole of electric capacity C1 and resistance R10 is connected, its P pole is then connected with DRA2 pin with the DRA1 pin of driving chip U1 simultaneously, the V33 pin of driving chip U1 is connected with its LN pin, and SW pin is then connected with the positive pole of electric capacity C5.
Described voltage stabilizing circuit comprises three terminal regulator U2, electric capacity C9, and electric capacity C10; The positive pole of electric capacity C9 is connected with the GND pin of three terminal regulator U2, minus earth, the positive pole of electric capacity C10 is connected with the OUT pin of three terminal regulator U2, negative pole is connected with the negative pole of electric capacity C8, and the IN pin of described three terminal regulator U2 is connected with the positive pole of electric capacity C4.
The utility model comparatively prior art is compared, and has the following advantages and beneficial effect:
(1) overall structure of the present utility model is very simple, not only makes and very easy to use, and stability is high.
(2) the utility model is compared with traditional LED drive system and is provided with boostrap circuit, and it effectively can promote the load capacity of drive system, thus can drive more LED group, to meet the demand of people simultaneously.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present utility model.
Embodiment
Below in conjunction with embodiment, the utility model is described in further detail, but execution mode of the present utility model is not limited thereto.
Embodiment
As shown in Figure 1, the LED drive system controlled based on bootstrapping of the present utility model, mainly comprises current rectifying and wave filtering circuit, the drive circuit be connected with rectification filter circuit output end, voltage stabilizing circuit.Between drive circuit and voltage stabilizing circuit, also boostrap circuit is provided with in order to realize the utility model.
This boostrap circuit is by triode VT1, field effect transistor Q, one end is connected with voltage stabilizing circuit with drive circuit simultaneously, the resistance R10 that the other end is then connected with the collector electrode of triode VT1, positive pole is connected with the emitter of triode VT1, the electric capacity C8 that negative pole is then connected with voltage stabilizing circuit, positive pole is connected with the source electrode of field effect transistor Q, the electric capacity C7 that negative pole is connected with the negative pole of electric capacity C8, one end is connected with the base stage of triode VT1, the resistance R6 of other end ground connection after resistance R8, positive pole is connected with the tie point of resistance R8 with resistance R6, the electric capacity C6 of negative pole ground connection after resistance R9, positive pole is connected with drive circuit, the electric capacity C5 that negative pole is then connected with the grid of field effect transistor Q, and one end is connected with the negative pole of electric capacity C5, the resistance R7 that the other end is then connected with the positive pole of electric capacity C6 forms, the drain electrode of described field effect transistor Q is connected with the base stage of triode VT1, and source electrode is connected with the negative pole of electric capacity C6.This boostrap circuit serves the effect of voltage follower in systems in which, makes drive system have very large input impedance, thus improve the load capacity of drive system by its effect.
The voltage of coming in from civil power input is alternating voltage, therefore, is provided with current rectifying and wave filtering circuit in system, thus civil power is become smooth-going direct current.Described current rectifying and wave filtering circuit is by fuse FU, and resistance R1, diode bridge rectifier U, electric capacity C1 form; Fuse FU is serially connected on an input of diode bridge rectifier U, and resistance R1 is then serially connected on another input of diode bridge rectifier U, and the positive and negative electrode of electric capacity C1 is then serially connected between two outputs of diode bridge rectifier U.
Drive circuit plays the driving effect of whole system, it is by driving chip U1, diode D1, one end is connected with the LN pin of driving chip U1, the electric capacity C2 that the other end is connected with the negative pole of electric capacity C1, one end is connected with the CS2 pin of driving chip U1, the resistance R3 that the other end is then connected with the negative pole of electric capacity C1, one end is connected with the CS1 pin of driving chip U1, the resistance R5 that the other end is then connected with the negative pole of electric capacity C1, one end is connected with the GND pin of driving chip U1, the electric capacity R2 of other end ground connection, one end is connected with the N pole of diode D1, the resistance R4 that the other end is connected with the SOU pin of driving chip U1 after electric capacity C3, and form with the electric capacity C4 that resistance R4 is in parallel, the N pole of described diode D1 is simultaneously with the positive pole of electric capacity C1 and resistance R10 is connected, its P pole is then connected with DRA2 pin with the DRA1 pin of driving chip U1 simultaneously, the V33 pin of driving chip U1 is connected with its LN pin, and SW pin is then connected with the positive pole of electric capacity C5.
Voltage stabilizing circuit can make the voltage of output more stable, and it comprises three terminal regulator U2, electric capacity C9, and electric capacity C10; The positive pole of electric capacity C9 is connected with the GND pin of three terminal regulator U2, minus earth, the positive pole of electric capacity C10 is connected with the OUT pin of three terminal regulator U2, negative pole is connected with the negative pole of electric capacity C8, and the IN pin of described three terminal regulator U2 is connected with the positive pole of electric capacity C4.
As mentioned above, just the utility model can well be realized.
Claims (4)
1., based on the LED drive system that bootstrapping controls, mainly comprise current rectifying and wave filtering circuit, the drive circuit be connected with rectification filter circuit output end, voltage stabilizing circuit, is characterized in that: between drive circuit and voltage stabilizing circuit, be also provided with boostrap circuit, described boostrap circuit is by triode VT1, field effect transistor Q, one end is connected with voltage stabilizing circuit with drive circuit simultaneously, the resistance R10 that the other end is then connected with the collector electrode of triode VT1, positive pole is connected with the emitter of triode VT1, the electric capacity C8 that negative pole is then connected with voltage stabilizing circuit, positive pole is connected with the source electrode of field effect transistor Q, the electric capacity C7 that negative pole is connected with the negative pole of electric capacity C8, one end is connected with the base stage of triode VT1, the resistance R6 of other end ground connection after resistance R8, positive pole is connected with the tie point of resistance R8 with resistance R6, the electric capacity C6 of negative pole ground connection after resistance R9, positive pole is connected with drive circuit, the electric capacity C5 that negative pole is then connected with the grid of field effect transistor Q, and one end is connected with the negative pole of electric capacity C5, the resistance R7 that the other end is then connected with the positive pole of electric capacity C6 forms, the drain electrode of described field effect transistor Q is connected with the base stage of triode VT1, and source electrode is connected with the negative pole of electric capacity C6.
2. the LED drive system controlled based on bootstrapping according to claim 1, is characterized in that: described current rectifying and wave filtering circuit is by fuse FU, and resistance R1, diode bridge rectifier U, electric capacity C1 form; Fuse FU is serially connected on an input of diode bridge rectifier U, and resistance R1 is then serially connected on another input of diode bridge rectifier U, and the positive and negative electrode of electric capacity C1 is then serially connected between two outputs of diode bridge rectifier U.
3. the LED drive system controlled based on bootstrapping according to claim 2, it is characterized in that: described drive circuit is by driving chip U1, diode D1, one end is connected with the LN pin of driving chip U1, the electric capacity C2 that the other end is connected with the negative pole of electric capacity C1, one end is connected with the CS2 pin of driving chip U1, the resistance R3 that the other end is then connected with the negative pole of electric capacity C1, one end is connected with the CS1 pin of driving chip U1, the resistance R5 that the other end is then connected with the negative pole of electric capacity C1, one end is connected with the GND pin of driving chip U1, the electric capacity R2 of other end ground connection, one end is connected with the N pole of diode D1, the resistance R4 that the other end is connected with the SOU pin of driving chip U1 after electric capacity C3, and form with the electric capacity C4 that resistance R4 is in parallel, the N pole of described diode D1 is simultaneously with the positive pole of electric capacity C1 and resistance R10 is connected, its P pole is then connected with DRA2 pin with the DRA1 pin of driving chip U1 simultaneously, the V33 pin of driving chip U1 is connected with its LN pin, and SW pin is then connected with the positive pole of electric capacity C5.
4. the LED drive system controlled based on bootstrapping according to claim 3, is characterized in that: described voltage stabilizing circuit comprises three terminal regulator U2, electric capacity C9, and electric capacity C10; The positive pole of electric capacity C9 is connected with the GND pin of three terminal regulator U2, minus earth, the positive pole of electric capacity C10 is connected with the OUT pin of three terminal regulator U2, negative pole is connected with the negative pole of electric capacity C8, and the IN pin of described three terminal regulator U2 is connected with the positive pole of electric capacity C4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420694839.5U CN204498405U (en) | 2014-11-18 | 2014-11-18 | Based on the LED drive system that bootstrapping controls |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420694839.5U CN204498405U (en) | 2014-11-18 | 2014-11-18 | Based on the LED drive system that bootstrapping controls |
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| Publication Number | Publication Date |
|---|---|
| CN204498405U true CN204498405U (en) | 2015-07-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420694839.5U Expired - Fee Related CN204498405U (en) | 2014-11-18 | 2014-11-18 | Based on the LED drive system that bootstrapping controls |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105376892A (en) * | 2015-12-11 | 2016-03-02 | 成都翰道科技有限公司 | Intelligent LED lamp control system based on adjustable constant-current drive circuit |
| CN105517225A (en) * | 2015-12-11 | 2016-04-20 | 成都翰道科技有限公司 | Energy-saving control system of intelligent LED lamp |
-
2014
- 2014-11-18 CN CN201420694839.5U patent/CN204498405U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105376892A (en) * | 2015-12-11 | 2016-03-02 | 成都翰道科技有限公司 | Intelligent LED lamp control system based on adjustable constant-current drive circuit |
| CN105517225A (en) * | 2015-12-11 | 2016-04-20 | 成都翰道科技有限公司 | Energy-saving control system of intelligent LED lamp |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160509 Address after: 214174, room 3, building 311, No. 1901, Yan Xin Road, Huishan Economic Development Zone, Wuxi, Jiangsu Patentee after: JIANGSU JIHUI NEW ENERGY TECHNOLOGY CO., LTD. Address before: 610000, 8 South Street, Chengdu hi tech Zone, Sichuan Patentee before: Chengdu Cuopu Technology Co., Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150722 Termination date: 20191118 |