CN210899741U - LED double-light car lamp driving circuit - Google Patents
LED double-light car lamp driving circuit Download PDFInfo
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- CN210899741U CN210899741U CN201921571052.9U CN201921571052U CN210899741U CN 210899741 U CN210899741 U CN 210899741U CN 201921571052 U CN201921571052 U CN 201921571052U CN 210899741 U CN210899741 U CN 210899741U
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Abstract
The utility model provides a two light car light drive circuit of LED, switch over and power dimming circuit, drive circuit, rectifier circuit, prevent mistake switching circuit, feedback circuit, input terminal group and output terminal group including nonpolarity far and near light, input terminal group links to each other with the input of nonpolarity far and near light switch over and power dimming circuit, rectifier circuit, be connected with on the input terminal group and prevent mistake switching circuit, rectifier circuit's output and drive circuit are connected, drive circuit's output and nonpolarity far and near light switch over and power dimming circuit link to each other, be connected with feedback circuit between drive circuit and the nonpolarity far and near light switch over and the power dimming circuit, nonpolarity far and near light switch over and power dimming circuit's output links to each other with output terminal group. The driving circuit can be compatible with direct current common anode control and alternating current application, and can realize constant current output of different distance light and different power output of the distance light and the near light.
Description
[ technical field ] A method for producing a semiconductor device
The utility model relates to a lighting system control circuit's technical field, especially a two light car lamp drive circuit of LED.
[ background of the invention ]
The following defects or problems are common to the drive circuit for upgrading the LED motorcycle headlight replacing the conventional halogen bulb in the current market:
due to the limitation of volume, most of driving power supplies only support direct current common cathode control, and cannot be compatible with direct current common anode control and alternating current application, so that the problems of no brightness, serious stroboflash and even damage can occur under the condition of alternating current application, and the LED double-light vehicle lamp driving circuit is provided.
[ Utility model ] content
The utility model aims at solving the problem among the prior art, providing a two light car light drive circuit of LED, but compatible direct current is anodal control altogether and exchange and use, thereby can realize the different constant current output of far and near light and realize the different power output of far and near light.
For realizing the above-mentioned purpose, the utility model provides a two light car light drive circuit of LED, switch and power dimming circuit, drive circuit, rectifier circuit, prevent mistake switching circuit, feedback circuit, input terminal group and output terminal group including nonpolarity far and near light, input terminal group links to each other with the input of nonpolarity far and near light switch and power dimming circuit, rectifier circuit, be connected with on the input terminal group and prevent mistake switching circuit, rectifier circuit's output and drive circuit are connected, drive circuit's output and the far and near light switch of nonpolarity and power dimming circuit link to each other, be connected with feedback circuit between drive circuit and the far and near light switch of nonpolarity and the power dimming circuit, the output that the far and near light switched and power dimming circuit of nonpolarity links to each other with output terminal group.
Preferably, the input connection terminal group comprises a first connection terminal, a second connection terminal and a third connection terminal, the input terminal of the rectification circuit is connected with the first connection terminal, the second connection terminal and the third connection terminal, the first connection terminal, the second connection terminal and the third connection terminal are connected with the driving circuit after being filtered by the rectification circuit and the power supply filter capacitor, the non-polar far and near light switching and power dimming circuit comprises a seventh diode, an eighth diode, a ninth diode, a twelfth diode, a fourth resistor, a fifth resistor and a triode, the first connection terminal, the second connection terminal and the third connection terminal are respectively connected with the seventh diode, the eighth diode and the ninth diode, the driving circuit comprises a constant current control chip, the feedback circuit comprises a second resistor, one end of the second resistor is connected with the input terminal of the twelfth diode, the other end links to each other with the MOD foot of constant current control chip, prevent that mistake switching circuit links to each other with the input of the far and near light switching of nonpolarity and power dimmer circuit, output connection end group includes fourth link, fifth link, sixth link, the collecting electrode of triode links to each other with the fifth link, the projecting pole of triode links to each other with the sixth link, the base of triode and the series connection node connection of twelfth polar tube, fifth resistance, the other end and the sixth link of fifth resistance link to each other, and the other end and the fourth resistance of twelfth polar tube link to each other, drive circuit's output links to each other with the fourth link.
Preferably, the anti-miscwitching circuit comprises a seventh resistor and an eighth resistor, one end of the seventh resistor is connected with the first connection end and the series node of the seventh diode, the other end of the seventh resistor is connected with the second connection end, one end of the eighth resistor is connected with the seventh resistor and the series node of the second connection end, and the other end of the eighth resistor is connected with the third connection end.
Preferably, the driving circuit further includes a chip filter capacitor, a first resistor, an eleventh diode, an inductor, a ninth resistor, and a third resistor, where the pin 0 of the constant current control chip is connected to the eleventh diode and the inductor, the other end of the inductor is connected to the sixth connection end, the pins 1 and 2 of the constant current control chip are connected to one end of the ninth resistor, the other end of the ninth resistor is grounded, the pin 3 of the constant current control chip is grounded, the pin 4 of the constant current control chip is connected to the second resistor, the pin 5 of the constant current control chip is connected to one end of the third resistor, the other end of the third resistor is grounded, the pins 6 and 7 of the constant current control chip are connected to the eleventh diode, and the pin 8 of the constant current control chip is connected to the series node of the chip filter capacitor and the first resistor.
Preferably, the seventh diode and the eighth diode are both connected in series with a twelfth diode in the forward direction, the ninth diode and the twelfth diode are connected in series in the reverse direction, and a fourth resistor is connected in series between the eighth diode and the ninth diode.
Preferably, the rectifying circuit includes a first diode, a second diode, a third diode, a fourth diode, a fifth diode, and a sixth diode, the first diode and the fourth diode are connected in series in the forward direction, the first connection end is connected to a series connection node of the first diode and the fourth diode, the second diode and the fifth diode are connected in series in the forward direction, the second connection end is connected to a series connection node of the second diode and the fifth diode, the third diode and the sixth diode are connected in series in the forward direction, and the third connection end is connected to a series connection node of the third diode and the sixth diode.
The utility model has the advantages that: the utility model discloses constitute a perfect nonpolarity far-reaching distance light switching and power dimmer circuit by D7, D8, D9, D10, R2, R4, R5, Q1. The LED high-low beam light source output can be switched, and a dimming signal can be fed back to the IC, so that constant current output of different high beams and low beams is realized, and different power output of the high beams and the low beams is realized. The constant current output mode of the IC is determined by an MOD pin, and when the MOD pin of the IC is suspended or at a low level, the constant current output of the IC is in a low beam mode; when the MOD pin of the IC is at a high level, the constant current output of the IC is in a high beam mode; the high beam output current is determined by the RS resistance, and the low beam output current is determined by the R3 resistance.
The features and advantages of the present invention will be described in detail by embodiments with reference to the accompanying drawings.
[ description of the drawings ]
Fig. 1 is a schematic diagram of a driving circuit of a LED dual-light vehicle lamp.
[ detailed description ] embodiments
Referring to fig. 1, the LED dual-lighting lamp driving circuit of the present invention includes a non-polar high-low beam switching and power dimming circuit a1, a driving circuit a2, a rectifying circuit A3, a mis-switching prevention circuit a4, a feedback circuit a5, an input terminal group a6, and an output terminal group a7, the input terminal group A6 is connected with the input terminals of the non-polar high and low beam switching and power dimming circuit A1 and the rectifying circuit A3, the input terminal group A6 is connected with an anti-error switching circuit A4, the output end of the rectifying circuit A3 is connected with a driving circuit A2, the output end of the driving circuit a2 is connected with the non-polar high and low beam switching and power dimming circuit a1, a feedback circuit a5 is connected between the driving circuit a2 and the non-polar high and low beam switching and power dimming circuit a1, the output end of the non-polar high and low beam switching and power dimming circuit A1 is connected with the output terminal group A7.
Further, the input connection terminal group a6 includes a first connection terminal H, a second connection terminal GND and a third connection terminal L, the input terminal of the rectification circuit A3 is connected to the first connection terminal H, the second connection terminal GND and the third connection terminal L, the first connection terminal H, the second connection terminal GND and the third connection terminal L are connected to the driving circuit a2 after being filtered by the rectification circuit A3 and the power filter capacitor C1, the non-polar low-distance optical switching and power dimming circuit a1 includes a seventh diode D7, an eighth diode D8, a ninth diode D9, a twelfth diode D10, a second resistor R2, a fourth resistor R4, a fifth resistor R5 and a triode Q1, the first connection terminal H, the second connection terminal and the third connection terminal L are respectively connected to the seventh diode D7, the eighth diode D8 and the ninth diode D9, the driving circuit a2 includes a constant current control IC chip, one end of the second resistor R2 is connected with the input end of the twelfth diode D10, the other end is connected with the MOD pin of the constant current control chip IC, the anti-error switching circuit a4 is connected to the input terminal of the non-polarity high-low beam switching and power dimming circuit a1, the output terminal group A7 comprises a fourth connection terminal O +, a fifth connection terminal O1-, and a sixth connection terminal O2-, the collector of the transistor Q1 is connected to the fifth connection O1-, the emitter of the transistor Q1 is connected to the sixth connection O2-, the base of the triode Q1 is connected with the series node of a fifth diode D10 and a fifth resistor R5, the other end of the fifth resistor R5 is connected with a sixth connecting end O2-, the other end of the twelfth diode D10 is connected with a fourth resistor R4, and the output end of the driving circuit A2 is connected with a fourth connecting end O +.
Furthermore, the anti-misswitching circuit a4 includes a seventh resistor R7 and an eighth resistor R8, one end of the seventh resistor R7 is connected to the series node of the first connection terminal H and the seventh diode D7, the other end is connected to the second connection terminal GND, one end of the eighth resistor R8 is connected to the series node of the seventh resistor R7 and the second connection terminal GND, and the other end is connected to the third connection terminal L. The driving circuit A2 further comprises a chip filter capacitor C2, a first resistor R1, an eleventh diode D11, an inductor L1, a ninth resistor RS and a third resistor R3 which are arranged at the periphery of the constant current control chip IC, the pin 0 of the constant current control chip IC is connected with an eleventh diode D11 and an inductor L1, the other end of the inductor L1 is connected with a sixth connecting end O2-, the pins 1 and 2 of the constant current control chip IC are connected with one end of a ninth resistor RS, the other end of the ninth resistor RS is grounded, the pin 3 of the constant current control chip IC is grounded, the pin 4 of the constant current control chip IC is connected with a second resistor R2, the pin 5 of the constant current control chip IC is connected with one end of a third resistor R3, the other end of the third resistor R3 is grounded, the pins 6 and 7 of the constant current control chip IC are connected with an eleventh diode D11, and the pin 8 of the constant current control chip IC is connected with the series node of a chip filter capacitor C2 and a first resistor R1. The seventh diode D7 and the eighth diode D8 are connected with a twelfth diode D10 in series in the forward direction, the ninth diode D9 is connected with the twelfth diode D10 in series in the reverse direction, and a fourth resistor R4 is connected between the eighth diode D8 and the ninth diode D9 in series. The rectifying circuit A3 comprises a first diode D1, a second diode D2, a third diode D3, a fourth diode D4, a fifth diode D5 and a sixth diode D6, the first diode D1 and the fourth diode D4 are connected in series in a forward direction, a first connection end H is connected with a series node of a first diode D1 and the fourth diode D4, the second diode D2 and the fifth diode D5 are connected in series in the forward direction, a second connection end GND is connected with a series node of a second diode D2 and a fifth diode D5, the third diode D3 and the sixth diode D6 are connected in series in the forward direction, and a third connection end L is connected with a series node of the third diode D3 and the sixth diode D6.
The utility model discloses a circuit theory of operation as follows:
common negative control mode:
when the common negative pole is near light, GND is connected with the negative pole, L is connected with the positive pole, and the constant current IC works after rectification by the bridge rectifier circuit and filtering by the capacitor. D8, D9 block in reverse direction, the MOD foot of IC is unsettled, IC output constant current is low beam setting current, Q1 is not conducted, O1-no output, O +, O2-output, low beam LED is conducted, and the LED lamp works in a low beam mode.
When the common negative pole is far away, GND is connected with the negative pole, H is connected with the positive pole, and the constant current IC works after rectification by the bridge rectifier circuit and filtering by the capacitor. D8 is blocked reversely, D7 is conducted, voltage reaches the MOD pin of the IC through R4 and R2, the MOD of the IC is at a high level, the IC outputs constant current as high beam set current, Q1 is conducted, O +, O2 and O1 are all output, high beam LEDs and low beam LEDs are all conducted, and the LED lamp works in a high beam mode.
Common positive electrode control mode:
when the common anode is near light, GND is connected with the anode, L is connected with the cathode, and the constant-current IC works after rectification by a bridge rectifier circuit and filtering by a capacitor. D8, D9 and R4 are conducted, the MOD pin of the IC is low in level, the constant current output by the IC is the low-beam set current, Q1 is not conducted, O1-has no output, O +, O2-has output, the low-beam LED is conducted, and the LED lamp works in a low-beam mode.
When the common anode is far away, GND is connected with the anode, H is connected with the cathode, and the constant-current IC works after rectification by the bridge rectifier circuit and filtering by the capacitor. D7 is blocked reversely, D8 is conducted, voltage reaches the MOD pin of the IC through R4 and R2, the MOD of the IC is at a high level, the IC outputs constant current as high beam set current, Q1 is conducted, O +, O2 and O1 are all output, high beam LEDs and low beam LEDs are all conducted, and the LED lamp works in a high beam mode.
An alternating current control mode:
under the condition of alternating current power supply, alternating current works through a constant current IC after rectification of a bridge rectifier circuit and capacitive filtering, and the high beam and the low beam are switched into a mixed working mode of alternately working under the control of common positive and common negative according to alternating current waveforms.
The above-mentioned embodiment is right the utility model discloses an explanation, it is not right the utility model discloses a limited, any right the scheme after the simple transform of the utility model all belongs to the protection scope of the utility model.
Claims (6)
1. The utility model provides a two light car light drive circuit of LED which characterized in that: comprises a non-polar far and near light switching and power dimming circuit (A1), a drive circuit (A2), a rectifying circuit (A3), an anti-error switching circuit (A4), a feedback circuit (A5), an input wiring terminal group (A6) and an output wiring terminal group (A7), the input terminal group (A6) is connected with the input ends of the non-polar high and low beam switching and power dimming circuit (A1) and the rectifying circuit (A3), the input terminal group (A6) is connected with an anti-error switching circuit (A4), the output end of the rectifying circuit (A3) is connected with a driving circuit (A2), the output end of the driving circuit (A2) is connected with a non-polar high-low beam switching and power dimming circuit (A1), a feedback circuit (A5) is connected between the drive circuit (A2) and the nonpolar high-low beam switching and power dimming circuit (A1), the output end of the non-polar far and near light switching and power dimming circuit (A1) is connected with an output wiring terminal group (A7).
2. The LED dual-lamp driving circuit as claimed in claim 1, wherein: the input connection terminal group (A6) comprises a first connection terminal (H), a second connection terminal (GND) and a third connection terminal (L), the input end of the rectification circuit (A3) is connected with the first connection terminal (H), the second connection terminal (GND) and the third connection terminal (L), the first connection terminal (H), the second connection terminal (GND) and the third connection terminal (L) are connected with the driving circuit (A2) after being filtered by the rectification circuit (A3) and the power supply filter capacitor (C1), the non-polarity far-near light switching and power dimming circuit (A1) comprises a seventh diode (D7), an eighth diode (D8), a ninth diode (D9), a twelfth diode (D10), a fourth resistor (R4), a fifth resistor (R5) and a triode (Q1), and the first connection terminal (H), the second connection terminal (GND) and the third connection terminal (L) are respectively connected with the seventh diode (D7), A eighth diode (D8) and a ninth diode (D9), the driving circuit (A2) includes a constant current control chip (IC), the feedback circuit (A5) includes a second resistor (R2), one end of the second resistor (R2) is connected to an input end of a twelfth diode (D10), the other end of the second resistor (R5) is connected to a MOD pin of the constant current control chip (IC), the anti-miscwitching circuit (A4) is connected to an input end of the nonpolar far-near light switching and power dimming circuit (A1), the output terminal group (A7) includes a fourth connection terminal (O +), a fifth connection terminal (O1-), and a sixth connection terminal (O2-), a collector of the triode (Q1) is connected to the fifth connection terminal (O1-), an emitter of the triode (Q1) is connected to the sixth connection terminal (O2-), and a base of the triode (Q1) is connected to the twelfth diode (D10), The series nodes of a fifth resistor (R5) are connected, the other end of the fifth resistor (R5) is connected with a sixth connecting end (O2-), the other end of a twelfth diode (D10) is connected with a fourth resistor (R4), and the output end of the driving circuit (A2) is connected with the fourth connecting end (O +).
3. A LED dual lamp driving circuit as claimed in claim 2, wherein: the anti-misoperation switching circuit (A4) comprises a seventh resistor (R7) and an eighth resistor (R8), one end of the seventh resistor (R7) is connected with the series node of the first connecting end (H) and the seventh diode (D7), the other end of the seventh resistor (R7) is connected with the second connecting end (GND), one end of the eighth resistor (R8) is connected with the series node of the seventh resistor (R7) and the second connecting end (GND), and the other end of the eighth resistor (R8) is connected with the third connecting end (L).
4. A LED dual lamp driving circuit as claimed in claim 2, wherein: the drive circuit (A2) further comprises a chip filter capacitor (C2), a first resistor (R1), an eleventh diode (D11), an inductor (L1), a ninth Resistor (RS) and a third resistor (R3) which are arranged at the periphery of the constant current control chip (IC), wherein a pin 0 of the constant current control chip (IC) is connected with the eleventh diode (D11) and the inductor (L1), the other end of the inductor (L1) is connected with a sixth connecting end (O2-), pins 1 and 2 of the constant current control chip (IC) are connected with one end of the ninth Resistor (RS), the other end of the ninth Resistor (RS) is grounded, a pin 3 of the constant current control chip (IC) is grounded, a pin 4 of the constant current control chip (IC) is connected with the second resistor (R2), a pin 5 of the constant current control chip (IC) is connected with one end of the third resistor (R3), the other end of the third resistor (R3) is grounded, and a pin 6 of the constant current control chip (IC) is grounded, The pin No. 7 is connected with an eleventh diode (D11), and the pin No. 8 of the constant current control chip (IC) is connected with the series node of the chip filter capacitor (C2) and the first resistor (R1).
5. A LED dual lamp driving circuit as claimed in claim 2, wherein: the seventh diode (D7) and the eighth diode (D8) are connected with a twelfth diode (D10) in series in the forward direction, the ninth diode (D9) is connected with the twelfth diode (D10) in series in the reverse direction, and a fourth resistor (R4) is connected between the eighth diode (D8) and the ninth diode (D9) in series.
6. A LED dual lamp driving circuit as claimed in claim 2, wherein: the rectification circuit (A3) includes a first diode (D1), a second diode (D2), a third diode (D3), a fourth diode (D4), a fifth diode (D5) and a sixth diode (D6), the first diode (D1) and the fourth diode (D4) are connected in series in a forward direction, the first connection end (H) is connected to a series node of the first diode (D1) and the fourth diode (D4), the second diode (D2) and the fifth diode (D5) are connected in series in a forward direction, the second connection end (GND) is connected to a series node of the second diode (D2) and the fifth diode (D5), the third diode (D3) and the sixth diode (D6) are connected in series in a forward direction, and the third connection end (L) is connected to a series node of the third diode (D3) and the sixth diode (D6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921571052.9U CN210899741U (en) | 2019-09-20 | 2019-09-20 | LED double-light car lamp driving circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921571052.9U CN210899741U (en) | 2019-09-20 | 2019-09-20 | LED double-light car lamp driving circuit |
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| Publication Number | Publication Date |
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| CN210899741U true CN210899741U (en) | 2020-06-30 |
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| CN201921571052.9U Active CN210899741U (en) | 2019-09-20 | 2019-09-20 | LED double-light car lamp driving circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110493931A (en) * | 2019-09-20 | 2019-11-22 | 嘉兴市光泰照明有限公司 | A kind of bis- light headlight drive circuits of LED |
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2019
- 2019-09-20 CN CN201921571052.9U patent/CN210899741U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110493931A (en) * | 2019-09-20 | 2019-11-22 | 嘉兴市光泰照明有限公司 | A kind of bis- light headlight drive circuits of LED |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Zhejiang Guangtai Lighting Co.,Ltd. Assignor: JIAXING GUANGTAI LIGHTING Co.,Ltd. Contract record no.: X2024330000108 Denomination of utility model: A LED dual light driving circuit Granted publication date: 20200630 License type: Common License Record date: 20240611 |