CN204836671U - Multi -functional drive circuit that adjusts luminance - Google Patents
Multi -functional drive circuit that adjusts luminance Download PDFInfo
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- CN204836671U CN204836671U CN201520485088.0U CN201520485088U CN204836671U CN 204836671 U CN204836671 U CN 204836671U CN 201520485088 U CN201520485088 U CN 201520485088U CN 204836671 U CN204836671 U CN 204836671U
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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 multi -functional drive circuit that adjusts luminance, intelligent power include rectifier circuit, dimmer circuit and double -H groove weld SB power supply output circuit, rectifier circuit's interchange side is used for connecing with municipality ferroelectric phase, dimmer circuit and double -H groove weld SB power supply output circuit all meet with rectifier circuit's direct current side, double -H groove weld SB power supply output circuit includes SF5940 device, MOS pipe Q1 and isolation transformer TR2, MOS pipe Q1 is N channel MOS pipe, dimmer circuit includes DU7761 device, MOS pipe Q4, isolation transformer TR1, constant current chip and MCU chip. The utility model discloses a multi -functional drive circuit that adjusts luminance supports the LED output of adjusting luminance, and has double - circuit USB power output, the function abundance, and the practicality is strong.
Description
Technical field
The utility model relates to a kind of Multifunctional light-regulating drive circuit.
Background technology
Present comparatively conventional power supply only has a USB charge port, and does not have light modulation output, and practicality is not strong.
General charger resistance bias just solves USB charging compatibility issue at present: the D+/D-of general USB charge port becomes 2.7V and 2.0V by electric resistance partial pressure.This set to solve the mobile device of apple and the smart mobile phone charging problems of other brands of part.This set can not charge to the mobile phone of the panel computer of Samsung and part blackberry, blueberry, and most of smart mobile phone just fills 500mA simultaneously, does not support USBBC1.2 mobile device quick charge (i.e. original-pack charger charging current).
One have three kinds of charge modes in the market: the 10W pattern of i Phone, the 10W pattern of Samsung mobile phone, USBBC1.2DCP pattern.If USB port is just divided into wherein a kind of pattern with resistance, just can only support part charging of mobile devices, certain limitation is had on compatibility, a lot of mobile device can not support quick charge simultaneously, charging current can only 500mA, and therefore existing charger can not meet compatible requirement.
Therefore, be necessary to design a kind of Multifunctional light-regulating drive circuit.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of Multifunctional light-regulating drive circuit, and this Multifunctional light-regulating drive circuit is easy to implement, feature richness.
The technical solution of utility model is as follows:
A kind of Multifunctional light-regulating drive circuit, is characterized in that, comprise rectification circuit, light adjusting circuit and double-H groove weld SB power output circuit;
The AC of rectification circuit is used for connecting with civil power; Light adjusting circuit and double-H groove weld SB power output circuit all connect with the DC side of rectification circuit;
Described light adjusting circuit comprises DU7761 device, metal-oxide-semiconductor Q4, isolating transformer TR1, constant current chip and MCU chip;
Metal-oxide-semiconductor Q4 is N-channel MOS pipe;
Isolating transformer TR1 has two primary coils and a secondary coil;
One termination rectification circuit of first primary coil of isolating transformer TR1,1 pin of DU7761 device connects the other end of the first primary coil by resistance R10 and metal-oxide-semiconductor Q4, to control the power supply of the first primary coil;
Second primary coil of isolating transformer TR1 is connected to the biasing circuit be made up of resistance R2, R3 and R11, electrochemical capacitor EC1 and diode D5;
The output circuit of the secondary coil of isolating transformer TR1 comprises diode D7, load resistance R4 and described constant current chip, and the two ends of load resistance R4 are output LED+ and LED-of light adjusting circuit; Constant current chip is controlled by MCU chip.
Described light adjusting circuit also comprises the clamp circuit be connected with first primary coil of described isolating transformer TR1, and this clamp circuit is made up of resistance R5, diode D6 and electric capacity C4.
Described constant current chip is DU2702 device; Described MCU chip is HC8T0506 device.
The outlet side of described rectification circuit is also connected to filter, and filter is made up of inductance L 2, resistance R16 and electrochemical capacitor EC5 and EC3.
Rectification circuit is bridge rectifier, the AC serial connection fuse F1 of rectification circuit.
Double-H groove weld SB power output circuit comprises SF5940 device, metal-oxide-semiconductor Q1 and isolating transformer TR2; Metal-oxide-semiconductor Q1 is N-channel MOS pipe;
Isolating transformer TR2 has two primary coils and a secondary coil;
One termination rectification circuit of first primary coil of isolating transformer TR2,3 pin of SF5940 device connect the other end of the first primary coil by resistance R12 and metal-oxide-semiconductor Q1, to control the power supply of the first primary coil;
Second primary coil of isolating transformer TR2 is connected to the biasing circuit be made up of resistance R26, diode D3 and electrochemical capacitor EC2;
The secondary coil of isolating transformer TR2 is connected to output circuit, described output circuit comprises 2 Schottky barrier diode D4 and D8 in parallel, also comprise the filter circuit be made up of electrochemical capacitor EC4 and EC6, electric capacity C5 and inductance L 3, also comprise load resistance R28; The output of double-H groove weld SB power output circuit is drawn from described output circuit;
Double-H groove weld SB power output circuit also comprises the UC2634 chip of support 2 USB output interfaces, and the output of described USB is 2, and the output of 2 USB is all connected with UC2634 chip;
The first described primary coil is also connected with the clamp circuit be made up of electric capacity C2, resistance R9 and R14 and diode D2, connects after electric capacity C4 and resistance R6 parallel connection with diode D6; Load resistance R4 is 10K ohm, and load resistance R28 is 220K ohm.
It is that light adjusting circuit and double-H groove weld SB power output circuit are powered that civil power is converted to direct current with bridge rectifier by this power acquisition, and arranges filter and realize filtering;
In described double-H groove weld SB power output circuit, adopt SF5940 device to control the primary coil work of isolating transformer TR2 by metal-oxide-semiconductor Q1, the outlet side of isolating transformer TR2 adopts UC2634 device to form 2 road USB output interfaces;
In described light adjusting circuit, adopt DU7761 device and metal-oxide-semiconductor Q4 to control the primary coil work of isolating transformer TR1, in the output circuit of the secondary coil of isolating transformer TR1, control constant current chip by MCU chip and realize LED light modulation.
Beneficial effect:
Multifunctional light-regulating drive circuit of the present utility model, its core is to adopt bridge rectifier, and civil power to be converted to direct current be that light adjusting circuit and double-H groove weld SB power output circuit are powered, and arrange filter and realize filtering;
In described double-H groove weld SB power output circuit, adopt SF5940 device to control the primary coil work of isolating transformer TR2 by metal-oxide-semiconductor Q1, the outlet side of isolating transformer TR2 adopts UC2634 device to form 2 road USB output interfaces;
In described light adjusting circuit, adopt DU7761 device and metal-oxide-semiconductor Q4 to control the primary coil work of isolating transformer TR1, in the output circuit of the secondary coil of isolating transformer TR1, control constant current chip by MCU chip and realize LED light modulation.
Therefore, Multifunctional light-regulating drive circuit of the present utility model is skillfully constructed, and adopts conventional device by being combined to form the power circuit with dimming function and double-H groove weld SB output cleverly, compatible good, practical.
Accompanying drawing explanation
Fig. 1 is the circuit theory diagrams of Multifunctional light-regulating drive circuit of the present utility model.
Embodiment
Below with reference to the drawings and specific embodiments, the utility model is described in further details:
Embodiment 1:
As shown in Figure 1, this programme proposes a kind of isolatedly can to input by Width funtion 100-265V, built-in touch light modulation constant current drives and the circuit with double-H groove weld SB5V2.1A and 1A intelligence output of one, AC Width funtion inputs, carry out rectification by DB1 rectifier bridge and realize AC/DC conversion, pass through by the EMI anti-interference filtration circuit formed again, DC after rectification carries out filtering by large bulk capacitance CE3 and CE5 and inductance (CE3-CE5-L2-R16) forms a filter, the useful signal of low frequency is passed through smoothly, and have inhibitory action to High-frequency Interference, reduce by external interference.Differential mode conducted EMI noise is decayed.EMI requirement can be met in the case, and there is larger allowance.Fuse F1 provides catastrophe failure to protect.This circuit divides two-way to control, and wherein one group is:
DU7761 device (U2) is integrated with device for power switching, oscillator, Isobarically Control engine, startup and defencive function.700VMOSFET can provide very large drain voltage allowance in universal input AC applies, and by using larger transformer turn ratio, improving reliability, and reducing the voltage stress of output diode.This device realizes self-powered completely by bypass pin and decoupling capacitance EC1.The design with the addition of a biasing circuit (D5, EC1 and R2, R3), zero load is inputted power consumption and is down to below 140mW.Input voltage through rectification and filtering is added in the side of TR1 armature winding.The MOSFET(Q4 that U2 is other) opposite side of driving transformer armature winding.(R5, C4, D6) forms clamp circuit, limits the drain voltage spike that leakage inductance causes.This circuit has selected Zener diode to release clamp circuit, to obtain minimum unloaded input power, but in the application accepting higher unloaded input power, to form standard RCD clamp.
(TR1) high-frequency isolation transformer, changes high pressure into low pressure, transformer secondary by device (D7, C6, U3, D1, L1, CE2, R4) form output loop, D7 carries out rectification, and C6 carries out filtering, LED load power supply is provided. the design exports and employs Schottky barrier diode to raise the efficiency, and can eliminate switching frequency ripple like this.(R20, R19, R18, Q5) forms decompression voltage regulator to be supplied to U3-(MCU chip) stable power supply, resistance adds three terminal regulator Q5 as pressure-limit current-limit circuit provides stabilized power supply to MCU chip; R21 is also for pressure limiting current-limiting circuit can be supplied to constant current chip DU2702 voltage.(D1 – L1-CE2 – R4-U3) forms buck configuration circuit, and to meet the output of Width funtion 0-30V safe voltage, CE2 carries out rear class filtering to output, and resistance R4 serves as dummy load, and output voltage can be made when non-loaded to maintain in respective limit.For reducing high frequency oscillation and relevant radiation EMI.Resistance (R23, R24) is in this circuit arrangement as the output current of the adjustable 0-500mA of detection sampling resistor of ± 1% precision.
Based on the touch control circuit of MCU chip HC8T0506, change LED luminance by the duty ratio changing PWM output.When contacting touch point (can access N number of touch point) simultaneously, the noise signal of human body sensing enters MCU chip (as resistance R11 through resistance, R12 etc. contribute to promoting EMC and safety characteristic), and this signal is processed, again by the duty ratio data of MCU chip inside, change LED luminance by the duty ratio changing PWM output, light modulation is carried out to LED.
Set of circuits control USB driving power provides management, and SF5940 device (U1) is integrated with device for power switching, oscillator, Isobarically Control engine, startup and defencive function.700VMOSFET can provide very large drain voltage allowance in universal input AC applies, and by using larger transformer turn ratio, improving reliability, and reducing the voltage stress of output diode.A biasing circuit (D3, R26, EC2) is with the addition of in design.Input voltage through rectification and filtering is added in the side of TR2 armature winding.The opposite side of U1 other MOSFET driving transformer armature winding.(R9, R14, C2, D2) forms clamp circuit, limits the drain voltage spike that leakage inductance causes.Circuit has selected Zener diode to release clamp circuit, to obtain minimum unloaded input power, but in the application accepting higher unloaded input power, to form standard RCD clamp
(TR2) high-frequency isolation transformer, changes high pressure into low pressure, transformer secondary by device (D4, D8, EC4, EC6, L3, C5, U4, R28) form output loop, the design exports (D4, D8) to 5V and employs Schottky barrier diode to raise the efficiency.(EC4, EC6, L3, C5) carries out rear class filtering to output, can eliminate switching frequency ripple like this.Resistance R28 serves as dummy load, and output voltage can be made when non-loaded to maintain in respective limit.For reducing high frequency oscillation and relevant radiation EMI, D8 with the addition of the RC buffer circuit be made up of R27 and C3.Wherein U4 is an intelligent USB pio chip in circuit, and two groups of USB intelligence can be provided to export.
The design's output voltage electric current DC5V3.1A can be divided into two groups of USB to export, and one group is electric current 1A.One group is electric current 2.1A, and two groups can be distributed electric current by independent assortment automated intelligent, and chip UC2634 is USB special charging port (DCP) controller.Automatic monitoring usb data line voltage distribution, and automatically on data circuit, provide correct electric characteristic, thus be compatible device charging in for special charging system configuration, and can automated intelligent simultaneously two groups to the charging of different products as mobile phone and panel computer.
Do some to each several part of this circuit below to illustrate:
1. current constant control
The Closed-loop Constant-current control patent that in driver, DU2702 employing is unique-
tRUEC2technology, can realize high-precision output current, guarantee the consistency of LED luminance under wide input voltage, output voltage and inductance parameters condition.
Closed-loop Constant-current controls, and namely really detects output current value, sends pwm signal as standard.So-called open loop, does not send the reference of pwm signal with the output current value detected.From circuit topology, the two is as broad as long.But at chip internal to CS pin inductor current signal being detected, TRUEC2 part does integral processing, and simultaneously detection peak electric current.Like this, just detect the mean value of inductive current, namely the mean value of output current.Chip pins, to the value detected, controls output duty cycle, achieves closed-loop control.This control structure, make circuit very simple, due to closed loop control current, compared to open loop approach, this circuit has inductance short-circuit protection function simultaneously.This is very important in the application, and this is equivalent to the risk greatly reducing system jam.Make this scheme not only in performance, have qualitative leap, reliability also improves greatly.Full closed loop control, detect output current, sending pwm signal, is real constant-current supply Drive Control Technique.Relative to the scheme of other non-closed loops; this exclusive Closed-loop Constant-current control technology makes output current precision have qualitative leap; the current precision of complete machine power supply in full voltage, full load, inductance excursion is made to reach in industry the highest ± 0.9% at present; simultaneously; due to closed-loop control; circuit has possessed inductance short circuit, current sense resistor short/open defencive function, and compare and open loop policy, circuit reliability has had large increase.
2. adjustable PWM duty cycle circuit touch control
Control principle is as follows: the pwm signal input of the external, programmable that the chip DU2702 of use provides, via the output of MCU control chip pwm signal, arranges the output duty cycle of pwm signal;
(the ON/OFF-DIMMER point on circuit or other contact points when tactile touch point short in hand, accessible N number of touch point) noise signal of human body sensing enters MCU chip inside through resistance, so just activate the data storing circuit of MCU inside, the LED light source consisting output current duty ratio data that storage data circuit will have been programmed again, and these data are sent to master control counting circuit, recycle above-mentioned data and set up internal database, by this database, signal is converted into the duty cycle signals of the actual output of LED, and send corresponding control signal to DU2702DIM light modulation input pin according to the data of setting, LED is made to adjust its luminous flux or light intensity ratio.
The output duty cycle of short tactile ON key acquiescence is 100%.
When short tactile ON exports 100%, then every short touching once jumps one grade, that is: 100%-0%, any duty ratio, carries out duty ratio light modulation.
MCU controls membrane keyboard can be divided into N number of button, and such as 5 keyed: 1.ON/OFF2. is duty ratio 0-39%3. be duty ratio 40%-69%4. be duty ratio 70%-99%5. is duty ratio 100%; When namely short tactile ON starts shooting and export 100%, then namely short tactile OFF shuts down.Each touch key-press can be divided into different duty ratios (0%-100%) to regulate LED luminance.
Containing memory function in data storing circuit, this function can store according to the duty ratio data exported during shutdown, then start is the output duty cycle before recovering shutdown; When pass tester in power-down state is started shooting again, PWM is with the non-standard output signal of last time.
Any duty ratio gear touches OFF, namely shuts down.
3. big current double-H groove weld SB intelligence output circuit
USB drive circuit is isolated constant voltage circuit, and output voltage electric current DC5V3.1A can be divided into two groups of USB to export, and one group is electric current 1A.One group is electric current 2.1A, and two groups can independent assortment smart allocation electric current.
General charger resistance bias just solves USB charging compatibility issue at present: the D+/D-of general USB charge port becomes 2.7V and 2.0V by electric resistance partial pressure.This set to solve the mobile device of apple and the smart mobile phone charging problems of other brands of part.This set can not charge to the mobile phone of the panel computer of Samsung and part blackberry, blueberry, and most of smart mobile phone just fills 500mA simultaneously, does not support USBBC1.2 mobile device quick charge (i.e. original-pack charger charging current).
One have three kinds of charge modes in the market: apple 10W pattern, Samsung 10W pattern, USBBC1.2DCP pattern.If USB port is just divided into wherein a kind of pattern with resistance, just can only supports part charging of mobile devices, have certain limitation on compatibility, a lot of mobile device can not support quick charge simultaneously, and charging current can only 500mA.
The design's output voltage electric current DC5V3.1A can be divided into two groups of USB to export, and one group is electric current 1A.One group is electric current 2.1A, and two groups can independent assortment smart allocation electric current, and chip UC2634 is USB special charging port (DCP) controller.Automatic monitoring usb data line voltage distribution, and automatically provide correct electric characteristic on data circuit, coming in for special charging system configuration is compatible device charging, and can simultaneously two groups different products charged as: mobile phone and panel computer.
USB charging current depends on two conditions: the bias voltage of VBUS voltage and D+/D-.UC2634 intelligence USB identification chip just solves the bias voltage of D+/D-.The size of VBUS voltage directly can affect the charging current of mobile device.As Samsung S4 mobile phone: VBUS=5.0, charging current is about 1.6A; VBUS=4.9V, charging current is about 1.0A.Meanwhile, use original-pack data wire when testing charging current, because have some data wires inside D+/D-to be biased to fixed voltage or dead resistance is larger as far as possible.
Generally, VBUS=5.0V can realize mobile device optimal charge current status.Because mobile device can check VBUS voltage decides to fill how many electric currents to mobile device.So when system, need the impact considering dead resistance R1 and USBCable dead resistance R2.
ThinkPadTablet charging current as association is 1A.Charger to be protected general 5V-1A charger to provide charging current not allow simultaneously, so the voltage of original-pack charger adjusts, the output voltage as ThinkPadTablet is about 5.3V.In 5V output voltage situation, charging current only has 1A; About 5.3V charging current can reach about 2.0A.
After adding UC2634 intelligence USB identification chip, require that portable power source has at least 2.1A output current ability.Because the charging current of apple, the panel computer of Samsung or the original-pack charger of Samsung S4 is 2.1A at present; it is the same with original-pack charger voltage that these mobile devices set D+/D-; will attempt filling 2.1A electric current from 5V power supply; if the output current of DC/DC does not reach 2.1A; easily allow 5VDC/DC enter guard mode, cause portable power source to be restarted or do not charge.
Chip UC2634 is USB special charging port (DCP) controller, and the automatic examine repair had monitors usb data line voltage distribution exactly, and automatically on data circuit, provides correct electric characteristic.
Claims (7)
1. a Multifunctional light-regulating drive circuit, is characterized in that, comprises rectification circuit, light adjusting circuit and double-H groove weld SB power output circuit;
The AC of rectification circuit is used for connecting with civil power; Light adjusting circuit and double-H groove weld SB power output circuit all connect with the DC side of rectification circuit;
Described light adjusting circuit comprises DU7761 device, metal-oxide-semiconductor Q4, isolating transformer TR1, constant current chip and MCU chip;
Metal-oxide-semiconductor Q4 is N-channel MOS pipe;
Isolating transformer TR1 has two primary coils and a secondary coil;
One termination rectification circuit of first primary coil of isolating transformer TR1,1 pin of DU7761 device connects the other end of the first primary coil by resistance R10 and metal-oxide-semiconductor Q4, to control the power supply of the first primary coil;
Second primary coil of isolating transformer TR1 is connected to the biasing circuit be made up of resistance R2, R3 and R11, electrochemical capacitor EC1 and diode D5;
The output circuit of the secondary coil of isolating transformer TR1 comprises diode D7, load resistance R4 and described constant current chip, and the two ends of load resistance R4 are output LED+ and LED-of light adjusting circuit; Constant current chip is controlled by MCU chip.
2. Multifunctional light-regulating drive circuit according to claim 1, it is characterized in that, described light adjusting circuit also comprises the clamp circuit be connected with first primary coil of described isolating transformer TR1, and this clamp circuit is made up of resistance R5, diode D6 and electric capacity C4.
3. Multifunctional light-regulating drive circuit according to claim 2, is characterized in that, described constant current chip is DU2702 device; Described MCU chip is HC8T0506 device.
4. Multifunctional light-regulating drive circuit according to claim 3, is characterized in that, the outlet side of described rectification circuit is also connected to filter, and filter is made up of inductance L 2, resistance R16 and electrochemical capacitor EC5 and EC3.
5. Multifunctional light-regulating drive circuit according to claim 4, is characterized in that, rectification circuit is bridge rectifier, the AC serial connection fuse F1 of rectification circuit.
6. Multifunctional light-regulating drive circuit according to claim 5, is characterized in that, double-H groove weld SB power output circuit comprises SF5940 device, metal-oxide-semiconductor Q1 and isolating transformer TR2; Metal-oxide-semiconductor Q1 is N-channel MOS pipe;
Isolating transformer TR2 has two primary coils and a secondary coil;
One termination rectification circuit of first primary coil of isolating transformer TR2,3 pin of SF5940 device connect the other end of the first primary coil by resistance R12 and metal-oxide-semiconductor Q1, to control the power supply of the first primary coil;
Second primary coil of isolating transformer TR2 is connected to the biasing circuit be made up of resistance R26, diode D3 and electrochemical capacitor EC2;
The secondary coil of isolating transformer TR2 is connected to output circuit, described output circuit comprises 2 Schottky barrier diode D4 and D8 in parallel, also comprise the filter circuit be made up of electrochemical capacitor EC4 and EC6, electric capacity C5 and inductance L 3, also comprise load resistance R28; The output of double-H groove weld SB power output circuit is drawn from described output circuit.
7. Multifunctional light-regulating drive circuit according to claim 6, it is characterized in that, double-H groove weld SB power output circuit also comprises the UC2634 chip of support 2 USB output interfaces, and the output of described USB is 2, and the output of 2 USB is all connected with UC2634 chip;
The first described primary coil is also connected with the clamp circuit be made up of electric capacity C2, resistance R9 and R14 and diode D2, connects after electric capacity C4 and resistance R6 parallel connection with diode D6; Load resistance R4 is 10K ohm, and load resistance R28 is 220K ohm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520485088.0U CN204836671U (en) | 2015-07-07 | 2015-07-07 | Multi -functional drive circuit that adjusts luminance |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520485088.0U CN204836671U (en) | 2015-07-07 | 2015-07-07 | Multi -functional drive circuit that adjusts luminance |
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| CN204836671U true CN204836671U (en) | 2015-12-02 |
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| CN201520485088.0U Active CN204836671U (en) | 2015-07-07 | 2015-07-07 | Multi -functional drive circuit that adjusts luminance |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109005616A (en) * | 2018-06-15 | 2018-12-14 | 广东光巨能汽配科技有限公司 | A kind of LED automobile distance light high-power driving power supply |
| CN109936889A (en) * | 2017-12-15 | 2019-06-25 | 松下知识产权经营株式会社 | Dimming driving circuit and the lighting device for using the dimming driving circuit |
-
2015
- 2015-07-07 CN CN201520485088.0U patent/CN204836671U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109936889A (en) * | 2017-12-15 | 2019-06-25 | 松下知识产权经营株式会社 | Dimming driving circuit and the lighting device for using the dimming driving circuit |
| CN109005616A (en) * | 2018-06-15 | 2018-12-14 | 广东光巨能汽配科技有限公司 | A kind of LED automobile distance light high-power driving power supply |
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