CN104470126A - LED bootstrap control system based on linear driving - Google Patents
LED bootstrap control system based on linear driving Download PDFInfo
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- CN104470126A CN104470126A CN201410715537.6A CN201410715537A CN104470126A CN 104470126 A CN104470126 A CN 104470126A CN 201410715537 A CN201410715537 A CN 201410715537A CN 104470126 A CN104470126 A CN 104470126A
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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 invention discloses an LED bootstrap control system based on linear driving. The system mainly comprises a rectifying and filtering circuit, a voltage detection circuit, a bootstrap circuit and a voltage stabilizing circuit, wherein the voltage detection circuit is connected with the output end of the rectifying and filtering circuit, the bootstrap circuit is connected with the voltage detection circuit, and the voltage stabilizing circuit is connected with the bootstrap circuit. The system is characterized by further comprising a linear driving circuit which is connected with the rectifying and filtering circuit and the voltage detection circuit simultaneously; the linear driving circuit is composed of a driving chip U3, a triode VT2, a triode VT3, a triode VT4, a triode VT5, a polar capacitor C11, a resistor R12 and the like; the positive electrode of the polar capacitor C11 is connected with the rectifying and filtering circuit, and the negative electrode of the polar capacitor C11 is connected with a pin IN1 of the driving chip U3 after passing through a resistor R11; one end of the resistor R12 is connected with the collector electrode of the triode VT5, and the other end of the resistor R12 is connected with the base electrode of the triode VT3 after passing through a resistor R13. Compared with a traditional LED driving system, since the high-power LED driving system based on linear driving is provided with the linear driving circuit, the LED bootstrap control system based on linear driving is provided with the linear driving circuit, and the linear driving circuit can effectively improve the load capacity of the driving system, so more LED lamp groups can be driven simultaneously to meet the demands of people.
Description
Technical field
The present invention relates to a kind of drive system, specifically refer to a kind of LED based on Linear Driving bootstrapping control system.
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 electrical pressure testing 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 voltage detecting circuit.But its load capacity of traditional LED drive system that current people adopt is very limited, can not meet the requirement of people.
Summary of the invention
The object of the invention is to overcome the very limited defect of current LED driving system loads ability, a kind of bootstrapping of the LED based on Linear Driving control system that can promote load capacity is provided.
Object of the present invention is achieved through the following technical solutions: based on the LED bootstrapping control system of Linear Driving, mainly comprise current rectifying and wave filtering circuit, the voltage detecting circuit be connected with rectification filter circuit output end, the boostrap circuit be connected with voltage detecting circuit, the voltage stabilizing circuit be connected with boostrap circuit, also comprises the linear drive circuit be simultaneously connected with voltage detecting circuit with current rectifying and wave filtering circuit, described linear drive circuit is by driving chip U3, triode VT2, triode VT3, triode VT4, triode VT5, positive pole is connected with current rectifying and wave filtering circuit, the polar capacitor C11 that negative pole is connected with the IN1 pin of driving chip U3 after resistance R11, one end is connected with the collector electrode of triode VT5, the resistance R12 that the other end is connected with the base stage of triode VT3 after resistance R13, positive pole is connected with the base stage of triode VT5, the polar capacitor C13 that negative pole is connected with the IN1 pin of driving chip U3, positive pole is connected with the IN2 pin of driving chip U3, the polar capacitor C12 of minus earth, one end is connected with the emitter of triode VT5, the resistance R15 that the other end is connected with the base stage of triode VT2, one end is connected with the base stage of triode VT2, the resistance R14 that the other end is connected with the base stage of triode VT3, N pole is connected with the collector electrode of triode VT5, the diode D3 that P pole is connected with the collector electrode of triode VT2, positive terminal is connected with the collector electrode of triode VT5, the not gate K that end of oppisite phase is connected with triode VT4 collector electrode, one end is connected with triode VT4 emitter, the resistance R17 that the other end is connected with the emitter of triode VT3 after resistance R16, the end of oppisite phase of P pole NAND gate K is connected, the diode D2 that N pole is connected with the tie point of resistance R16 with resistance R17 forms, the VCC pin of described driving chip U3 is connected with the base stage of triode VT5, END pin ground connection, OUT pin are connected with the collector electrode of triode VT2, the collector electrode of triode VT2 is also connected with the base stage of triode VT4, its emitter is connected with the base stage of triode man VT3, the grounded collector of triode VT3, the N pole of diode D2 is connected with voltage detecting circuit.
Described current rectifying and wave filtering circuit is by fuse FU, and resistance R1, diode bridge rectifier U, polar capacitor C1 form; Fuse FU is serially connected on an input of diode bridge rectifier U, resistance R1 is then serially connected on another input of diode bridge rectifier U, the positive and negative electrode of polar capacitor C1 is then serially connected between two outputs of diode bridge rectifier U, and the positive pole of polar capacitor C1 is connected with the positive pole of electric capacity C11, its negative pole is connected with voltage detecting circuit.
Described voltage detecting circuit is by detection chip U1, diode D1, one end is connected with the LN pin of detection chip U1, the polar capacitor C2 that the other end is connected with the negative pole of polar capacitor C1, one end is connected with the CS2 pin of detection chip U1, the resistance R3 that the other end is then connected with the negative pole of polar capacitor C1, one end is connected with the CS1 pin of detection chip U1, the resistance R5 that the other end is then connected with the negative pole of polar capacitor C1, one end is connected with the GND pin of detection chip U1, the polar capacitor 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 detection chip U1 after polar capacitor C3, and form with the polar capacitor C4 that resistance R4 is in parallel, the N pole of described diode D1 is simultaneously with the N pole of diode D2 and boostrap circuit is connected, its P pole is then connected with DRA2 pin with the DRA1 pin of detection chip U1 simultaneously, the V33 pin of detection chip U1 is connected with its LN pin, and SW pin is then connected with boostrap circuit.
Described boostrap circuit is by triode VT1, field effect transistor Q, be connected with the N pole of diode D1 and voltage stabilizing circuit while of one end, 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 polar capacitor 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 polar capacitor C7 that negative pole is connected with the negative pole of polar capacitor 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 polar capacitor C6 of negative pole ground connection after resistance R9, positive pole is connected with the SW pin of detection chip U1, the polar capacitor 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 polar capacitor C5, the other end be then connected with the positive pole of polar capacitor C6 resistance R7 form, 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 polar capacitor C6.
Described voltage stabilizing circuit comprises three terminal regulator U2, polar capacitor C9, and polar capacitor C10; The positive pole of polar capacitor C9 is connected with the GND pin of three terminal regulator U2, minus earth, the positive pole of polar capacitor C10 is connected with the OUT pin of three terminal regulator U2, negative pole is connected with the negative pole of polar capacitor C8, and the IN pin of described three terminal regulator U2 is connected with the positive pole of polar capacitor C4.
The present invention comparatively prior art compares, and has the following advantages and beneficial effect:
(1) overall structure of the present invention is very simple, not only makes and very easy to use, and stability is high.
(2) the present invention compares with traditional LED drive system and is provided with linear drive 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 invention.
Fig. 2 is the structural representation of linear drive circuit of the present invention.
Embodiment
Below in conjunction with embodiment, the present invention is described in further detail, but embodiments of the present invention are not limited thereto.
Embodiment
As shown in Figure 1, LED based on Linear Driving bootstrapping control system of the present invention, mainly comprise current rectifying and wave filtering circuit, the voltage detecting circuit be connected with rectification filter circuit output end, the boostrap circuit be connected with voltage detecting circuit, the voltage stabilizing circuit be connected with boostrap circuit, also comprises the linear drive circuit be simultaneously connected with voltage detecting circuit with current rectifying and wave filtering circuit.
As shown in Figure 2, described linear drive circuit is by driving chip U3, triode VT2, triode VT3, triode VT4, triode VT5, positive pole is connected with current rectifying and wave filtering circuit, the polar capacitor C11 that negative pole is connected with the IN1 pin of driving chip U3 after resistance R11, one end is connected with the collector electrode of triode VT5, the resistance R12 that the other end is connected with the base stage of triode VT3 after resistance R13, positive pole is connected with the base stage of triode VT5, the polar capacitor C13 that negative pole is connected with the IN1 pin of driving chip U3, positive pole is connected with the IN2 pin of driving chip U3, the polar capacitor C12 of minus earth, one end is connected with the emitter of triode VT5, the resistance R15 that the other end is connected with the base stage of triode VT2, one end is connected with the base stage of triode VT2, the resistance R14 that the other end is connected with the base stage of triode VT3, N pole is connected with the collector electrode of triode VT5, the diode D3 that P pole is connected with the collector electrode of triode VT2, positive terminal is connected with the collector electrode of triode VT5, the not gate K that end of oppisite phase is connected with triode VT4 collector electrode, one end is connected with triode VT4 emitter, the resistance R17 that the other end is connected with the emitter of triode VT3 after resistance R16, the end of oppisite phase of P pole NAND gate K is connected, the diode D2 that N pole is connected with the tie point of resistance R16 with resistance R17 forms, the VCC pin of described driving chip U3 is connected with the base stage of triode VT5, END pin ground connection, OUT pin are connected with the collector electrode of triode VT2, the collector electrode of triode VT2 is also connected with the base stage of triode VT4, its emitter is connected with the base stage of triode man VT3, the grounded collector of triode VT3, the N pole of diode D2 is connected with voltage detecting circuit.Linear drive circuit, it effectively can promote the load capacity of drive system, thus can drive more LED group, to meet the demand of people simultaneously.In order to ensure implementation result, described driving chip U3 is preferably LM387 integrated chip, its highly sensitive and low price.
Described current rectifying and wave filtering circuit is by fuse FU, and resistance R1, diode bridge rectifier U, polar capacitor C1 form; Fuse FU is serially connected on an input of diode bridge rectifier U, resistance R1 is then serially connected on another input of diode bridge rectifier U, the positive and negative electrode of polar capacitor C1 is then serially connected between two outputs of diode bridge rectifier U, and the positive pole of polar capacitor C1 is connected with the positive pole of electric capacity C11, its negative pole is connected with voltage detecting circuit.
Described voltage detecting circuit is by detection chip U1, diode D1, one end is connected with the LN pin of detection chip U1, the polar capacitor C2 that the other end is connected with the negative pole of polar capacitor C1, one end is connected with the CS2 pin of detection chip U1, the resistance R3 that the other end is then connected with the negative pole of polar capacitor C1, one end is connected with the CS1 pin of detection chip U1, the resistance R5 that the other end is then connected with the negative pole of polar capacitor C1, one end is connected with the GND pin of detection chip U1, the polar capacitor 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 detection chip U1 after polar capacitor C3, and form with the polar capacitor C4 that resistance R4 is in parallel, the N pole of described diode D1 is simultaneously with the N pole of diode D2 and boostrap circuit is connected, its P pole is then connected with DRA2 pin with the DRA1 pin of detection chip U1 simultaneously, the V33 pin of detection chip U1 is connected with its LN pin, and SW pin is then connected with boostrap circuit.
Described boostrap circuit is by triode VT1, field effect transistor Q, be connected with the N pole of diode D1 and voltage stabilizing circuit while of one end, 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 polar capacitor 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 polar capacitor C7 that negative pole is connected with the negative pole of polar capacitor 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 polar capacitor C6 of negative pole ground connection after resistance R9, positive pole is connected with the SW pin of detection chip U1, the polar capacitor 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 polar capacitor C5, the other end be then connected with the positive pole of polar capacitor C6 resistance R7 form, 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 polar capacitor C6.
Described voltage stabilizing circuit comprises three terminal regulator U2, polar capacitor C9, and polar capacitor C10; The positive pole of polar capacitor C9 is connected with the GND pin of three terminal regulator U2, minus earth, the positive pole of polar capacitor C10 is connected with the OUT pin of three terminal regulator U2, negative pole is connected with the negative pole of polar capacitor C8, and the IN pin of described three terminal regulator U2 is connected with the positive pole of polar capacitor C4.
As mentioned above, just the present invention can well be realized.
Claims (5)
1. based on the LED bootstrapping control system of Linear Driving, mainly comprise current rectifying and wave filtering circuit, the voltage detecting circuit be connected with rectification filter circuit output end, the boostrap circuit be connected with voltage detecting circuit, the voltage stabilizing circuit be connected with boostrap circuit, is characterized in that: also comprise the linear drive circuit be simultaneously connected with voltage detecting circuit with current rectifying and wave filtering circuit, described linear drive circuit is by driving chip U3, triode VT2, triode VT3, triode VT4, triode VT5, positive pole is connected with current rectifying and wave filtering circuit, the polar capacitor C11 that negative pole is connected with the IN1 pin of driving chip U3 after resistance R11, one end is connected with the collector electrode of triode VT5, the resistance R12 that the other end is connected with the base stage of triode VT3 after resistance R13, positive pole is connected with the base stage of triode VT5, the polar capacitor C13 that negative pole is connected with the IN1 pin of driving chip U3, positive pole is connected with the IN2 pin of driving chip U3, the polar capacitor C12 of minus earth, one end is connected with the emitter of triode VT5, the resistance R15 that the other end is connected with the base stage of triode VT2, one end is connected with the base stage of triode VT2, the resistance R14 that the other end is connected with the base stage of triode VT3, N pole is connected with the collector electrode of triode VT5, the diode D3 that P pole is connected with the collector electrode of triode VT2, positive terminal is connected with the collector electrode of triode VT5, the not gate K that end of oppisite phase is connected with triode VT4 collector electrode, one end is connected with triode VT4 emitter, the resistance R17 that the other end is connected with the emitter of triode VT3 after resistance R16, the end of oppisite phase of P pole NAND gate K is connected, the diode D2 that N pole is connected with the tie point of resistance R16 with resistance R17 forms, the VCC pin of described driving chip U3 is connected with the base stage of triode VT5, END pin ground connection, OUT pin are connected with the collector electrode of triode VT2, the collector electrode of triode VT2 is also connected with the base stage of triode VT4, its emitter is connected with the base stage of triode man VT3, the grounded collector of triode VT3, the N pole of diode D2 is connected with voltage detecting circuit.
2. the LED based on Linear Driving according to claim 1 boots control system, it is characterized in that: described current rectifying and wave filtering circuit is by fuse FU, and resistance R1, diode bridge rectifier U, polar capacitor C1 form; Fuse FU is serially connected on an input of diode bridge rectifier U, resistance R1 is then serially connected on another input of diode bridge rectifier U, the positive and negative electrode of polar capacitor C1 is then serially connected between two outputs of diode bridge rectifier U, and the positive pole of polar capacitor C1 is connected with the positive pole of electric capacity C11, its negative pole is connected with voltage detecting circuit.
3. the bootstrapping of the LED based on Linear Driving control system according to claim 2, it is characterized in that: described voltage detecting circuit is by detection chip U1, diode D1, one end is connected with the LN pin of detection chip U1, the polar capacitor C2 that the other end is connected with the negative pole of polar capacitor C1, one end is connected with the CS2 pin of detection chip U1, the resistance R3 that the other end is then connected with the negative pole of polar capacitor C1, one end is connected with the CS1 pin of detection chip U1, the resistance R5 that the other end is then connected with the negative pole of polar capacitor C1, one end is connected with the GND pin of detection chip U1, the polar capacitor 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 detection chip U1 after polar capacitor C3, and form with the polar capacitor C4 that resistance R4 is in parallel, the N pole of described diode D1 is simultaneously with the N pole of diode D2 and boostrap circuit is connected, its P pole is then connected with DRA2 pin with the DRA1 pin of detection chip U1 simultaneously, the V33 pin of detection chip U1 is connected with its LN pin, and SW pin is then connected with boostrap circuit.
4. the bootstrapping of the LED based on Linear Driving control system according to claim 3, it is characterized in that: described boostrap circuit is by triode VT1, field effect transistor Q, be connected with the N pole of diode D1 and voltage stabilizing circuit while of one end, 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 polar capacitor 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 polar capacitor C7 that negative pole is connected with the negative pole of polar capacitor 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 polar capacitor C6 of negative pole ground connection after resistance R9, positive pole is connected with the SW pin of detection chip U1, the polar capacitor 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 polar capacitor C5, the other end be then connected with the positive pole of polar capacitor C6 resistance R7 form, 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 polar capacitor C6.
5. the bootstrapping of the LED based on Linear Driving control system according to claim 4, is characterized in that: described voltage stabilizing circuit comprises three terminal regulator U2, polar capacitor C9, and polar capacitor C10; The positive pole of polar capacitor C9 is connected with the GND pin of three terminal regulator U2, minus earth, the positive pole of polar capacitor C10 is connected with the OUT pin of three terminal regulator U2, negative pole is connected with the negative pole of polar capacitor C8, and the IN pin of described three terminal regulator U2 is connected with the positive pole of polar capacitor C4.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410715537.6A CN104470126A (en) | 2014-11-29 | 2014-11-29 | LED bootstrap control system based on linear driving |
| CN201510323675.4A CN104994620A (en) | 2014-11-29 | 2015-06-12 | LED bootstrap control system based on step-down constant current |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410715537.6A CN104470126A (en) | 2014-11-29 | 2014-11-29 | LED bootstrap control system based on linear driving |
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| CN104470126A true CN104470126A (en) | 2015-03-25 |
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| CN201410715537.6A Pending CN104470126A (en) | 2014-11-29 | 2014-11-29 | LED bootstrap control system based on linear driving |
| CN201510323675.4A Pending CN104994620A (en) | 2014-11-29 | 2015-06-12 | LED bootstrap control system based on step-down constant current |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510323675.4A Pending CN104994620A (en) | 2014-11-29 | 2015-06-12 | LED bootstrap control system based on step-down constant current |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104994620A (en) * | 2014-11-29 | 2015-10-21 | 成都颉盛科技有限公司 | LED bootstrap control system based on step-down constant current |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101394104B (en) * | 2007-09-18 | 2011-06-08 | 广鹏科技股份有限公司 | USB charger circuit |
| TW201008097A (en) * | 2008-08-01 | 2010-02-16 | Addtek Corp | Buck converter with surge protection |
| CN102244954A (en) * | 2010-05-12 | 2011-11-16 | 英飞特电子（杭州）有限公司 | Constant current drive circuit with high power factor |
| CN202738178U (en) * | 2012-06-14 | 2013-02-13 | 青岛威力风光发电设备有限公司 | LED voltage reduction drive circuit |
| CN202818688U (en) * | 2012-07-06 | 2013-03-20 | 成都市思博睿科技有限公司 | Constant-current drive apparatus used for LED circuit |
| CN103687137A (en) * | 2012-09-07 | 2014-03-26 | 成都默一科技有限公司 | Constant-current driving device for LED circuit |
| CN103904879A (en) * | 2014-01-09 | 2014-07-02 | 常州隆辉照明科技有限公司 | Compensating circuit and method for buck circuit power factor |
| CN104470126A (en) * | 2014-11-29 | 2015-03-25 | 成都思茂科技有限公司 | LED bootstrap control system based on linear driving |
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- 2014-11-29 CN CN201410715537.6A patent/CN104470126A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104994620A (en) * | 2014-11-29 | 2015-10-21 | 成都颉盛科技有限公司 | LED bootstrap control system based on step-down constant current |
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Application publication date: 20150325 |