CN208158951U - A kind of LED power circuit of tunable optical color-temperature regulating - Google Patents
A kind of LED power circuit of tunable optical color-temperature regulating Download PDFInfo
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- CN208158951U CN208158951U CN201820688326.1U CN201820688326U CN208158951U CN 208158951 U CN208158951 U CN 208158951U CN 201820688326 U CN201820688326 U CN 201820688326U CN 208158951 U CN208158951 U CN 208158951U
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Abstract
The utility model relates to a kind of LED power circuits of tunable optical color-temperature regulating, including switch power module, it further include MCU control light-adjusting module, remote control module, white light and warm light lamp, the switch power module includes EMI filter circuit, a rectification circuit, MOS drive circuit, transformer, secondary rectification circuit and feedback of voltage and current circuit, and the MCU control light-adjusting module includes reverse-connection preventing circuit, PWM light adjusting circuit, the first microcontroller and the first RF RF transceiver.Compared with prior art, the utility model can neatly give lamp light-regulating, color-temperature regulating, and cost of manufacture is cheap, using simple, reliable, can use in wisdom Lighting Design, and individually use in being illuminated with common household.
Description
Technical field
The utility model relates to a kind of LED power circuits, more particularly, to a kind of LED power electricity of tunable optical color-temperature regulating
Road.
Background technique
With the improvement of living standards, people are higher and higher to environmental requirement of living, not only for ambient lighting
It rests in brightness.But there is higher requirement to the comfort of ambient lighting, artistry.Therefore, wisdom illumination concept is accumulate
It educates and gives birth to.Wisdom illuminates the colour temperature and light for being required to remote control tune LED light, to meet the needs of different user.
Utility model content
The purpose of this utility model is exactly to provide a kind of tunable optical tune to overcome the problems of the above-mentioned prior art
The LED power circuit of colour temperature can neatly give lamp light-regulating, color-temperature regulating, and cost of manufacture is cheap, can be using simple, reliable
It is used in wisdom Lighting Design, and individually use in being illuminated with common household.
The purpose of this utility model can be achieved through the following technical solutions：
A kind of LED power circuit of tunable optical color-temperature regulating, including switch power module, further include MCU control light-adjusting module,
Remote control module, white light and warm light lamp, the switch power module include EMI filter circuit, a rectification circuit, MOS driving
Circuit, transformer, secondary rectification circuit and feedback of voltage and current circuit, MCU control light-adjusting module include reverse-connection preventing circuit,
PWM light adjusting circuit, the first microcontroller and the first RF RF transceiver, AC power source connect primary rectification through EMI filter circuit
The input terminal of circuit, the output end of a rectification circuit are separately connected one end and the MOS driving electricity of primary winding
The feeder ear on road, the MOS drive circuit output end connection primary winding the other end, the transformer secondary output around
The input terminal of group connection secondary rectification circuit, the input terminal of the secondary rectification circuit are separately connected feedback of voltage and current circuit
The output end of the input terminal of input terminal and reverse-connection preventing circuit, the feedback of voltage and current circuit drives through optical coupling isolator connection MOS
The feedback end of dynamic circuit, the output end of the reverse-connection preventing circuit is separately connected one end of white light and one end of warm light lamp, described
First output end of the other end connection PWM light adjusting circuit of white light, the other end connection PWM light adjusting circuit of the warm light lamp
Second output terminal, the input terminal of the PWM light adjusting circuit connect the output end of the first microcontroller, first microcontroller
Input terminal connects the first RF RF transceiver, and the remote control module and the first RF RF transceiver are wirelessly connected.
The remote control module includes the second microcontroller, and is separately connected the remote keying and second of the second microcontroller
RF RF transceiver, the 2nd RF RF transceiver and the first RF RF transceiver are wirelessly connected.
Second microcontroller uses SAMD20J18A-AUT chip.
First microcontroller uses STM8S003F3 chip.
The transformer further includes the auxiliary winding with own primary winding on same stem, the MOS drive circuit
Including constant-flow driver IC1, resistance R1-R14, diode D1-D5, voltage-stabiliser tube Z1-Z2, metal-oxide-semiconductor Q1-Q2, triode Q2 and electricity
Hold C1-C6, one end of resistance R1 is separately connected the output end of a rectification circuit, one end of primary winding, diode
The cathode of D3, one end of resistance R10, one end of resistance R11 and voltage-stabiliser tube Z1 anode, the other end of resistance R1 is separately connected perseverance
The end MULT, one end of capacitor C1 and one end of resistance R2 of driver IC 1 are flowed, the other end of capacitor C1 is separately connected capacitor C2's
One end, one end of resistance R3, the other end of resistance R2, the end GND of constant-flow driver IC1, one end of resistance R9 and ground terminal, resistance
The other end of R3 is separately connected one end of the negative pole of output end of optical coupling isolator, the other end of capacitor C2 and resistance R4, resistance R4
The other end be separately connected the end INV of one end of capacitor C3, one end of resistance R6 and constant-flow driver IC1, capacitor C3's is another
One end of end connection resistance R5, the other end of resistance R5 are separately connected one end of resistance R6 and the end COMP of constant-flow driver IC1,
The other end of resistance R9 is separately connected the source electrode at the end CS of constant-flow driver IC1, one end of resistance R8 and metal-oxide-semiconductor Q1, resistance R8
The other end be separately connected the grid of one end of resistance R7, the anode of diode D1 and metal-oxide-semiconductor Q1, the other end difference of resistance R7
Connect the end GD of constant-flow driver IC1 and the cathode of diode D1, the drain electrode of metal-oxide-semiconductor Q1 be separately connected the anode of diode D2 with
The other end of primary winding, the cathode of the cathode connection voltage-stabiliser tube Z1 of diode D2, the anode of diode D3 connect respectively
Connect the output head anode of optical coupling isolator, one end of capacitor C4, the end VCC of constant-flow driver IC1, one end of capacitor C5, three poles
The emitter of pipe Q3 and the source electrode of metal-oxide-semiconductor Q2, the other end of capacitor C4 are separately connected the sun of the other end of capacitor C5, voltage-stabiliser tube Z2
Pole, one end of capacitor C6, one end of transformer auxiliary winding and ground terminal, the other end of the drain electrode connection resistance R10 of metal-oxide-semiconductor Q2,
The grid of metal-oxide-semiconductor Q2 is separately connected the cathode of the other end of resistance R11, the cathode of diode D4 and voltage-stabiliser tube Z2, triode Q3
Base stage be separately connected the anode of diode D4 and one end of resistance R12, the collector of triode Q3 is separately connected resistance R12's
One end of the other end and resistance R13, the other end of resistance R13 are separately connected the other end of capacitor C6 and the cathode of diode D5,
The anode of diode D5 is separately connected the other end of transformer auxiliary winding and one end of resistance R14, and the other end of resistance R14 connects
Connect the end ZCD of constant-flow driver IC1.
The feedback of voltage and current circuit includes dual operational amplifier U1, resistance R15-R26, diode D6-D7, voltage-stabiliser tube
Z3, triode Q3 and capacitor C7-C15, resistance R26 be connected on secondary rectification circuit negative pole of output end and reverse-connection preventing circuit it is defeated
Enter to hold between cathode, one end of resistance R15 is separately connected the input terminal of the output head anode of secondary rectification circuit, reverse-connection preventing circuit
One end of anode, the collector of triode Q3 and resistance R16, the other end of resistance R15 are separately connected one end of resistance R17, electricity
One end of R18 and the end in1- of dual operational amplifier U1 are hindered, the other end of resistance R17 is separately connected one end of capacitor C7, capacitor
One end, the end gnd of dual operational amplifier U1, the anode of voltage-stabiliser tube Z3, one end of capacitor C8, one end of resistance R20, electricity of C14
Hinder one end of C9, one end of capacitor C10, reverse-connection preventing circuit input cathode and ground terminal, the other end of resistance R16 is separately connected
The base stage of triode Q3 and the cathode of voltage-stabiliser tube Z3, one end of the other end connection capacitor C11 of resistance R18, capacitor C11's is another
End be separately connected diode D6 cathode and dual operational amplifier U1 the end out1, the anode of diode D6 be separately connected optocoupler every
The anode of input cathode and diode D7 from device, the cathode of diode D7 are separately connected one end and pair operation of resistance R19
The end out2 of amplifier U1, one end of the other end connection capacitor C11 of resistance R19, the other end of capacitor C11 are separately connected double fortune
The end in2-, one end of capacitor C13 and the other end of resistance R20 of amplifier U1 are calculated, the other end of capacitor C13 is separately connected double fortune
The end in2+, one end of resistance R21 and one end of resistance R22 of amplifier U1 are calculated, the other end of resistance R21 is separately connected resistance
One end of R23 and the other end of capacitor C8, the other end of resistance R22 are separately connected the negative pole of output end of secondary rectification circuit, electricity
Hold the other end of C10 and the other end of capacitor C9, the other end of resistance R23 is separately connected the other end of capacitor C7, double operations are put
The end in1+ of big device U1 and one end of resistance R24, the other end of resistance R24 are separately connected one end of resistance R25, capacitor C14
The other end at the end vcc of the other end, the emitter of triode Q3 and dual operational amplifier U1, resistance R25 connects optical coupling isolator
Input anode.
The PWM light adjusting circuit include bridge driver IC2, resistance R27-R30, metal-oxide-semiconductor Q4-Q5, diode D8-D9,
The end INA of inductance L1-L2 and capacitor C16-C17, bridge driver IC2 connect the output end of the first microcontroller, bridge-drive
The end INB of device IC2 connects the second output terminal of the first microcontroller, and the end OUTA of bridge driver IC2 connects the one of resistance R27
End, the other end of resistance R27 are separately connected one end of resistance R28 and the grid of metal-oxide-semiconductor Q4, and the other end of resistance R28 connects respectively
The drain electrode of the source electrode of ground terminal and metal-oxide-semiconductor Q4, metal-oxide-semiconductor Q4 is separately connected the anode of diode D8 and one end of inductance L1, two poles
The cathode of pipe D8 is separately connected one end of one end of capacitor C16, the output end of reverse-connection preventing circuit and white light, and capacitor C16's is another
One end is separately connected the other end of inductance L1 and the other end of white light, the OUT terminal connection resistance R29's of bridge driver IC2
One end, the other end of resistance R29 are separately connected one end of resistance R30 and the grid of metal-oxide-semiconductor Q5, the other end difference of resistance R30
The source electrode of ground terminal and metal-oxide-semiconductor Q5 is connected, the drain electrode of metal-oxide-semiconductor Q5 is separately connected the anode of diode D9 and one end of inductance L2, and two
The cathode of pole pipe D9 is separately connected one end of one end of capacitor C17, the output end of reverse-connection preventing circuit and warm light lamp, capacitor C17's
The other end is separately connected the other end of inductance L2 and the other end of warm light lamp.
The MCU control light-adjusting module further includes voltage regulator circuit, and the input terminal of the voltage regulator circuit connects reverse-connection preventing circuit
Output end, voltage regulator circuit the first output end connection PWM light adjusting circuit feeder ear, voltage regulator circuit second output terminal difference
Connect the feeder ear of the first microcontroller and the first RF RF transceiver.
Compared with prior art, the utility model has the following advantages that：Feedback of voltage and current circuit in switch power module
The potential circuit of secondary rectification circuit output is detected, and is controlled to MOS drive circuit by MOS drive circuit by opto-coupled feedback
Constant pressure and flow output control is realized in the output of transformer.Remote control module remotely issues light modulation and switch to MCU control light-adjusting module
Lamp instruction.MCU controls light-adjusting module and receives the signal of remote control module and drive sending dim signal to the MOS of PWM light adjusting circuit.
PWM light adjusting circuit receives the control signal of the first microcontroller, carries out current limliting to the out-put supply of white light and warm light lamp, realizes
Dim color-temperature regulating.Lamp light-regulating, color-temperature regulating can be neatly given, cost of manufacture is cheap, using simple, reliable.It can be in intelligence
In household and wisdom lighting area widely promotes and applies, economic value with higher.
Detailed description of the invention
Fig. 1 is the structural block diagram of the LED power circuit of tunable optical color-temperature regulating；
Fig. 2 is the circuit diagram of switch power module；
Fig. 3 is the circuit diagram that MCU controls light-adjusting module；
Fig. 4 is the circuit diagram of remote control module.
In figure, 1, EMI filter circuit, 2, rectification circuits, 3, MOS drive circuit, T1, transformer, 4, secondary rectification
Circuit, 5, feedback of voltage and current circuit, 6, reverse-connection preventing circuit, 7, PWM light adjusting circuit, U2, optical coupling isolator, U3, the first micro-control
Device processed, IC3, the first RF RF transceiver, U4, the second microcontroller, IC6, the 2nd RF RF transceiver, 8, voltage regulator circuit, 9,
White light, 10, warm light lamp, 11, remote keying.
Specific embodiment
The utility model is described in detail in the following with reference to the drawings and specific embodiments.The present embodiment is with the utility model
Implemented premised on technical solution, the detailed implementation method and specific operation process are given, but the guarantor of the utility model
Shield range is not limited to the following embodiments.
As shown in Figure 1, a kind of LED power circuit of tunable optical color-temperature regulating, including switch power module, it further include MCU control
Light-adjusting module, remote control module, white light 9 and warm light lamp 10 processed, switch power module include 1, rectified current of EMI filter circuit
Road 2, MOS drive circuit 3, transformer T1, secondary rectification circuit 4 and feedback of voltage and current circuit 5, MCU control light-adjusting module packet
Reverse-connection preventing circuit 6, PWM light adjusting circuit 7, the first microcontroller U3 and the first RF RF transceiver IC3 are included, AC power source is through EMI
Filter circuit 1 connects the input terminal of a rectification circuit 2, and it is primary that the output end of a rectification circuit 2 is separately connected transformer T1
The output end of one end of winding and the feeder ear of MOS drive circuit 3, MOS drive circuit 3 connects the another of transformer T1 armature winding
One end, transformer T1 secondary windings connect the input terminal of secondary rectification circuit 4, and the input terminal of secondary rectification circuit 4 is separately connected
The input terminal of feedback of voltage and current circuit 5 and the input terminal of reverse-connection preventing circuit 6, the output end of feedback of voltage and current circuit 5 is through light
The feedback end of coupling isolator U2 connection MOS drive circuit 3, the output end of reverse-connection preventing circuit 6 be separately connected white light 9 one end and
One end of warm light lamp 10, the first output end of the other end connection PWM light adjusting circuit 7 of white light 9, the other end of warm light lamp 10 connect
The second output terminal of PWM light adjusting circuit 7 is connect, the input terminal of PWM light adjusting circuit 7 connects the output end of the first microcontroller U3, the
The input terminal of one microcontroller U3 connects the first RF RF transceiver IC3.Feedback of voltage and current circuit 5 is examined in switch power module
The potential circuit that secondary rectification circuit 4 exports is surveyed, and is controlled to MOS drive circuit 3 by MOS drive circuit 3 by opto-coupled feedback
Constant pressure and flow output control is realized in the output of transformer T1.Remote control module remotely issues light modulation to MCU control light-adjusting module and opens
It turns off the light instruction.MCU controls light-adjusting module and receives the signal of remote control module and drive sending light modulation letter to the MOS of PWM light adjusting circuit 7
Number.PWM light adjusting circuit 7 receives the control signal of the first microcontroller U3, carries out to the out-put supply of white light 9 and warm light lamp 10
Current limliting realizes light modulation color-temperature regulating.
As shown in Fig. 2, the low-pass filter circuit that EMI filter circuit 1 is made of current-limiting reactor and shunt capacitor, packet
Include fuse F1, resistance R31-R33, inductance L3-L4 and capacitor C21.Rectification circuit 2 includes full bridge rectifier B1 and electricity
Hold C22-C24.Secondary rectification circuit 4 includes capacitor C25-C27, resistance R32 and diode D10.
As shown in Fig. 2, transformer T1 further includes the auxiliary winding with own primary winding on same stem, MOS driving
Circuit 3 includes constant-flow driver IC1, resistance R1-R14, diode D1-D5, voltage-stabiliser tube Z1-Z2, metal-oxide-semiconductor Q1-Q2, triode Q2
With capacitor C1-C6, one end of resistance R1 be separately connected the output end of a rectification circuit 2, transformer T1 armature winding one end,
The cathode of diode D3, one end of resistance R10, one end of resistance R11 and voltage-stabiliser tube Z1 anode, resistance R1 the other end difference
The end MULT, one end of capacitor C1 and one end of resistance R2 of constant-flow driver IC1 are connected, the other end of capacitor C1 is separately connected electricity
Hold one end of C2, one end of resistance R3, the other end of resistance R2, the end GND of constant-flow driver IC1, resistance R9 one end and ground
End, the other end of resistance R3 are separately connected the one of the negative pole of output end of optical coupling isolator U2, the other end of capacitor C2 and resistance R4
End, the other end of resistance R4 are separately connected the end INV of one end of capacitor C3, one end of resistance R6 and constant-flow driver IC1, capacitor
One end of the other end connection resistance R5 of C3, the other end of resistance R5 are separately connected one end and the constant-flow driver IC1 of resistance R6
The end COMP, the other end of resistance R9 is separately connected the source at the end CS of constant-flow driver IC1, one end of resistance R8 and metal-oxide-semiconductor Q1
Pole, the other end of resistance R8 are separately connected the grid of one end of resistance R7, the anode of diode D1 and metal-oxide-semiconductor Q1, resistance R7's
The other end is separately connected the end GD of constant-flow driver IC1 and the cathode of diode D1, and the drain electrode of metal-oxide-semiconductor Q1 is separately connected diode
The anode of D2 and the other end of transformer T1 armature winding, the cathode of the cathode connection voltage-stabiliser tube Z1 of diode D2, diode D3
Anode be separately connected the output head anode of optical coupling isolator U2, one end of capacitor C4, the end VCC of constant-flow driver IC1, capacitor
One end of C5, the emitter of triode Q3 and metal-oxide-semiconductor Q2 source electrode, the other end of capacitor C4 is separately connected the another of capacitor C5
End, the anode of voltage-stabiliser tube Z2, one end of capacitor C6, one end of transformer T1 auxiliary winding and ground terminal, the drain electrode connection of metal-oxide-semiconductor Q2
The other end of resistance R10, the grid of metal-oxide-semiconductor Q2 are separately connected the other end of resistance R11, the cathode of diode D4 and voltage-stabiliser tube Z2
Cathode, the base stage of triode Q3 is separately connected the anode of diode D4 and one end of resistance R12, the collector point of triode Q3
Not Lian Jie the other end of resistance R12 and one end of resistance R13, the other end of resistance R13 be separately connected capacitor C6 the other end and
The cathode of diode D5, the anode of diode D5 are separately connected the other end of transformer T1 auxiliary winding and one end of resistance R14,
The end ZCD of the other end connection constant-flow driver IC1 of resistance R14.Wherein, constant-flow driver IC1 uses AP1662 chip, transformation
VCC end of the auxiliary winding output of device T1 by regulator rectifier circuit 8 to constant-flow driver IC1 powers, and at the end VCC of IC1
A diode is reversely connect as discharge diode, prevents power supply in frequently switching on machine, since the end the S electricity of metal-oxide-semiconductor Q2 does not discharge
And it can not start.
As shown in Fig. 2, feedback of voltage and current circuit 5 includes dual operational amplifier U1, resistance R15-R26, diode D6-
D7, voltage-stabiliser tube Z3, triode Q3 and capacitor C7-C15, resistance R26 are connected on negative pole of output end and the counnter attack of secondary rectification circuit 4
Between the input cathode for connecing circuit 6, the resistance value very little of resistance R26 uses, the one of resistance R15 as current sampling resistor
End is separately connected the collector of the output head anode of secondary rectification circuit 4, the input anode of reverse-connection preventing circuit 6, triode Q3
With one end of resistance R16, the other end of resistance R15 is separately connected one end of resistance R17, one end of resistance R18 and double operations and puts
The end in1- of big device U1, the other end of resistance R17 are separately connected one end of capacitor C7, one end of capacitor C14, dual operational amplifier
The end gnd of U1, the anode of voltage-stabiliser tube Z3, one end of capacitor C8, one end of resistance R20, one end of resistance C9, capacitor C10 one
It holds, the input cathode and ground terminal of reverse-connection preventing circuit 6, the other end of resistance R16 is separately connected the base stage and pressure stabilizing of triode Q3
The cathode of pipe Z3, one end of the other end connection capacitor C11 of resistance R18, the other end of capacitor C11 are separately connected diode D6's
The end out1 of cathode and dual operational amplifier U1, the anode of diode D6 be separately connected optical coupling isolator U2 input cathode and
The anode of diode D7, the cathode of diode D7 are separately connected one end of resistance R19 and the end out2 of dual operational amplifier U1, electricity
Hinder R19 the other end connection capacitor C11 one end, the other end of capacitor C11 be separately connected dual operational amplifier U1 the end in2-,
One end of capacitor C13 and the other end of resistance R20, the other end of capacitor C13 be separately connected dual operational amplifier U1 the end in2+,
One end of resistance R21 and one end of resistance R22, the other end of resistance R21 be separately connected resistance R23 one end and capacitor C8 it is another
One end, the other end of resistance R22 are separately connected the negative pole of output end of secondary rectification circuit 4, the other end of capacitor C10 and capacitor C9
The other end, the other end of resistance R23 is separately connected the other end of capacitor C7, the end in1+ of dual operational amplifier U1 and resistance
One end of R24, the other end of resistance R24 are separately connected the transmitting of one end of resistance R25, the other end of capacitor C14, triode Q3
The end vcc of pole and dual operational amplifier U1, the input anode of the other end connection optical coupling isolator U2 of resistance R25.Wherein, double
Operational amplifier U1 uses NCS1002 chip, and to detect voltage and current, optical coupling isolator U2 uses SFH615A-4 chip, passes through
Opto-coupled feedback is realized altogether to IC1, feedback of voltage and current circuit 5 and MOS drive circuit 3 by capacitor C15.
As shown in figure 3, reverse-connection preventing circuit 6 includes resistance R33, metal-oxide-semiconductor Q6 and triode Q7.Here reverse-connection preventing circuit 6
It is relatively unique, without the mode of conventional serial diode, but come anti-reverse by the way of MOS switch.It is damaged since MOS is connected
Consumption is less than diode, so anti-reverse by the way of MOS switch be better than traditional diode.
As shown in figure 3, MCU control light-adjusting module further includes voltage regulator circuit 8, the input terminal connection of voltage regulator circuit 8 is anti-reverse
The output end of circuit 6, the feeder ear of the first output end connection PWM light adjusting circuit 7 of voltage regulator circuit 8, the second of voltage regulator circuit 8 are defeated
Outlet is separately connected the feeder ear of the first microcontroller U3 and the first RF RF transceiver IC3.Voltage regulator circuit 8 includes being connected
First voltage-stablizer IC4 and the second voltage-stablizer IC5, wherein the output end of the first voltage-stablizer IC4 connection reverse-connection preventing circuit 6 uses
7812 chips export 12V voltage to the end VCC of bridge driver IC2, and the second voltage-stablizer IC5 uses HT7333 chip, to first
The vdd terminal of the vdd terminal of microcontroller U3 and the first RF RF transceiver IC3 export 3.3V voltage, MCU can be made to be stablized in this way
Power supply, make MCU control light-adjusting module it is more stable.Signal is received by the first RF RF transceiver IC3, it is micro- by first
Controller U3 drives sending instruction to signal processing and to the MOS of PWM light adjusting circuit 7, adjusts to white light 9 and warm light lamp 10
Light, color-temperature regulating.
As shown in figure 3, PWM light adjusting circuit 7 includes bridge driver IC2, resistance R27-R30, metal-oxide-semiconductor Q4-Q5, diode
D8-D9, inductance L1-L2 and capacitor C16-C17, the end INA of bridge driver IC2 connect the output end of the first microcontroller U3,
The end INB of bridge driver IC2 connects the second output terminal of the first microcontroller U3, the end the OUTA connection of bridge driver IC2
One end of resistance R27, the other end of resistance R27 are separately connected one end of resistance R28 and the grid of metal-oxide-semiconductor Q4, and resistance R28's is another
One end is separately connected the source electrode of ground terminal and metal-oxide-semiconductor Q4, and the drain electrode of metal-oxide-semiconductor Q4 is separately connected the anode and inductance L1 of diode D8
One end, the cathode of diode D8 are separately connected one end of one end of capacitor C16, the output end of reverse-connection preventing circuit 6 and white light 9,
The other end of capacitor C16 is separately connected the other end of inductance L1 and the other end of white light 9, and the OUT terminal of bridge driver IC2 connects
One end of connecting resistance R29, the other end of resistance R29 are separately connected one end of resistance R30 and the grid of metal-oxide-semiconductor Q5, resistance R30's
The other end is separately connected the source electrode of ground terminal and metal-oxide-semiconductor Q5, and the drain electrode of metal-oxide-semiconductor Q5 is separately connected the anode and inductance L2 of diode D9
One end, the cathode of diode D9 is separately connected the one of one end of capacitor C17, the output end of reverse-connection preventing circuit 6 and warm light lamp 10
End, the other end of capacitor C17 are separately connected the other end of inductance L2 and the other end of warm light lamp 10.Bridge driver IC2 is received
Two output signals and correspondence output pulse signal of first microcontroller U3 give metal-oxide-semiconductor Q4-Q5 to drive, to control metal-oxide-semiconductor Q4-
The switching frequency of Q5 realizes the light modulation of white light 9 and warm light lamp 10, pin J3 and J4 are respectively corresponded to reach current limitation effect
Connect white light 9 and warm light lamp 10.
As shown in figure 4, remote control module includes the second microcontroller U4, and it is separately connected the remote control of the second microcontroller U4
Key 11 and the 2nd RF RF transceiver IC6, the 2nd RF RF transceiver IC6 and the first RF RF transceiver IC3 are wirelessly connected.
Structure of the power supply circuit of second microcontroller U4 and the 2nd RF RF transceiver IC6 with voltage regulator circuit 8.Wherein KEY is in Fig. 4
Remote keying 11, remote keying 11 generate charge inducing by human body touch circuit board, by positions different on human body touch circuit board
The charge inducing set feeds back to the second microcontroller U4, then is issued and instructed by the second microcontroller U4, is received by the 2nd RF radio frequency
It sends out device IC6 and issues control signal, to realize remote control light modulating function.
In the present embodiment, the first microcontroller U3 uses STM8S003F3 chip and its peripheral circuits.Second microcontroller
U4 uses SAMD20J18A-AUT chip and its peripheral circuits.2nd RF RF transceiver IC6 and the first RF RF transceiver IC3
It is all made of LT8900 chip.6000K can be used in the colour temperature of white light 9, and 3000K can be used in the colour temperature of warm light lamp 10.
The utility model combines switch power technology, 2.4G wireless radio-frequency, MCU intelligent control technology and PWM tune
Light technology, and LED lamp is combined to design, the intelligent terminal of minimum unit is formed with kind in wisdom Lighting Design, such as：
Lamp bead-warm light the lamp 10 and white light 9 that two kinds of different-colours are arranged in a lamp, pass through the dimming light source to both colour temperatures
To realize the effect of whole lamp color-temperature regulating.In practical applications, the lamp of more kinds of colour temperatures can be arranged in lamps and lanterns according to field demand
Pearl can reach the requirement of colour temperature required for user, can also improve colour rendering index to a certain extent by multi-channel control.
Claims (8)
1. a kind of LED power circuit of tunable optical color-temperature regulating, including switch power module, which is characterized in that further include MCU control
Light-adjusting module, remote control module, white light and warm light lamp, the switch power module include EMI filter circuit, a rectified current
Road, MOS drive circuit, transformer, secondary rectification circuit and feedback of voltage and current circuit, the MCU control light-adjusting module include
Reverse-connection preventing circuit, PWM light adjusting circuit, the first microcontroller and the first RF RF transceiver, AC power source connect through EMI filter circuit
Connect the input terminal of a rectification circuit, the output end of a rectification circuit be separately connected primary winding one end and
The feeder ear of MOS drive circuit, the other end of the output end connection primary winding of the MOS drive circuit, the change
Depressor secondary windings connects the input terminal of secondary rectification circuit, and the input terminal of the secondary rectification circuit is separately connected voltage and current
The input terminal of feed circuit and the input terminal of reverse-connection preventing circuit, the output end of the feedback of voltage and current circuit is through optical coupling isolator
The feedback end of MOS drive circuit is connected, the output end of the reverse-connection preventing circuit is separately connected one end and the warm light lamp of white light
One end, the first output end of the other end connection PWM light adjusting circuit of the white light, the other end of the warm light lamp connect PWM
The second output terminal of light adjusting circuit, the output end of input terminal the first microcontroller of connection of the PWM light adjusting circuit, described first
The input terminal of microcontroller connects the first RF RF transceiver, and the remote control module and the first RF RF transceiver are wirelessly connected.
2. a kind of LED power circuit of tunable optical color-temperature regulating according to claim 1, which is characterized in that the remote control mould
Block includes the second microcontroller, and is separately connected remote keying and the 2nd RF RF transceiver of the second microcontroller, described
2nd RF RF transceiver and the first RF RF transceiver are wirelessly connected.
3. a kind of LED power circuit of tunable optical color-temperature regulating according to claim 2, which is characterized in that described second is micro-
Controller uses SAMD20J18A-AUT chip.
4. a kind of LED power circuit of tunable optical color-temperature regulating according to claim 1, which is characterized in that described first is micro-
Controller uses STM8S003F3 chip.
5. a kind of LED power circuit of tunable optical color-temperature regulating according to claim 1, which is characterized in that the transformer
Further include the auxiliary winding with own primary winding on same stem, the MOS drive circuit include constant-flow driver IC1,
Resistance R1-R14, diode D1-D5, voltage-stabiliser tube Z1-Z2, metal-oxide-semiconductor Q1-Q2, triode Q2 and capacitor C1-C6, the one of resistance R1
End is separately connected the output end of a rectification circuit, one end of primary winding, the cathode of diode D3, resistance R10
The anode of one end, one end of resistance R11 and voltage-stabiliser tube Z1, the other end of resistance R1 are separately connected the MULT of constant-flow driver IC1
End, one end of capacitor C1 and resistance R2 one end, the other end of capacitor C1 be separately connected one end of capacitor C2, resistance R3 one
End, the end GND of the other end of resistance R2, constant-flow driver IC1, one end of resistance R9 and ground terminal, the other end difference of resistance R3
Negative pole of output end, the other end of capacitor C2 and one end of resistance R4 of optical coupling isolator are connected, the other end of resistance R4 connects respectively
The end INV of one end of capacitor C3, one end of resistance R6 and constant-flow driver IC1 is connect, the other end connection resistance R5's of capacitor C3
One end, the other end of resistance R5 are separately connected one end of resistance R6 and the end COMP of constant-flow driver IC1, the other end of resistance R9
It is separately connected the source electrode at the end CS of constant-flow driver IC1, one end of resistance R8 and metal-oxide-semiconductor Q1, the other end of resistance R8 connects respectively
One end of connecting resistance R7, the anode of diode D1 and metal-oxide-semiconductor Q1 grid, the other end of resistance R7 is separately connected constant-flow driver
The drain electrode of the end GD of IC1 and the cathode of diode D1, metal-oxide-semiconductor Q1 is separately connected the anode and primary winding of diode D2
The other end, the cathode of the cathode connection voltage-stabiliser tube Z1 of diode D2, the anode of diode D3 is separately connected optical coupling isolator
Output head anode, one end of capacitor C4, the end VCC of constant-flow driver IC1, one end of capacitor C5, triode Q3 emitter and
The source electrode of metal-oxide-semiconductor Q2, the other end of capacitor C4 be separately connected the other end of capacitor C5, the anode of voltage-stabiliser tube Z2, capacitor C6 one
End, one end of transformer auxiliary winding and ground terminal, the other end of the drain electrode connection resistance R10 of metal-oxide-semiconductor Q2, the grid of metal-oxide-semiconductor Q2
It is separately connected the cathode of the other end of resistance R11, the cathode of diode D4 and voltage-stabiliser tube Z2, the base stage of triode Q3 is separately connected
The anode of diode D4 and one end of resistance R12, the collector of triode Q3 are separately connected the other end and resistance of resistance R12
One end of R13, the other end of resistance R13 are separately connected the other end of capacitor C6 and the cathode of diode D5, the sun of diode D5
Pole is separately connected the other end of transformer auxiliary winding and one end of resistance R14, and the other end of resistance R14 connects constant-flow driver
The end ZCD of IC1.
6. a kind of LED power circuit of tunable optical color-temperature regulating according to claim 1, which is characterized in that the voltage electricity
Current feedback circuit includes dual operational amplifier U1, resistance R15-R26, diode D6-D7, voltage-stabiliser tube Z3, triode Q3 and capacitor
C7-C15, resistance R26 are connected between the negative pole of output end of secondary rectification circuit and the input cathode of reverse-connection preventing circuit, resistance
One end of R15 is separately connected the collection of the output head anode of secondary rectification circuit, the input anode of reverse-connection preventing circuit, triode Q3
One end of electrode and resistance R16, the other end of resistance R15 are separately connected one end of resistance R17, one end of resistance R18 and double fortune
The end in1- of amplifier U1 is calculated, the other end of resistance R17 is separately connected one end of capacitor C7, one end of capacitor C14, double operations are put
The end gnd, the anode of voltage-stabiliser tube Z3, one end of capacitor C8, one end of resistance R20, one end of resistance C9, capacitor C10 of big device U1
One end, reverse-connection preventing circuit input cathode and ground terminal, the other end of resistance R16 is separately connected the base stage of triode Q3 and steady
The cathode of pressure pipe Z3, one end of the other end connection capacitor C11 of resistance R18, the other end of capacitor C11 are separately connected diode D6
Cathode and dual operational amplifier U1 the end out1, the anode of diode D6 be separately connected optical coupling isolator input cathode and
The anode of diode D7, the cathode of diode D7 are separately connected one end of resistance R19 and the end out2 of dual operational amplifier U1, electricity
Hinder R19 the other end connection capacitor C11 one end, the other end of capacitor C11 be separately connected dual operational amplifier U1 the end in2-,
One end of capacitor C13 and the other end of resistance R20, the other end of capacitor C13 be separately connected dual operational amplifier U1 the end in2+,
One end of resistance R21 and one end of resistance R22, the other end of resistance R21 be separately connected resistance R23 one end and capacitor C8 it is another
One end, the other end of resistance R22 are separately connected the negative pole of output end of secondary rectification circuit, the other end of capacitor C10 and capacitor C9
The other end, the other end of resistance R23 is separately connected the other end of capacitor C7, the end in1+ of dual operational amplifier U1 and resistance
One end of R24, the other end of resistance R24 are separately connected the transmitting of one end of resistance R25, the other end of capacitor C14, triode Q3
The end vcc of pole and dual operational amplifier U1, the input anode of the other end connection optical coupling isolator of resistance R25.
7. a kind of LED power circuit of tunable optical color-temperature regulating according to claim 1, which is characterized in that the PWM light modulation
Circuit includes bridge driver IC2, resistance R27-R30, metal-oxide-semiconductor Q4-Q5, diode D8-D9, inductance L1-L2 and capacitor C16-
The end INA of C17, bridge driver IC2 connect the first output end of the first microcontroller, the end the INB connection of bridge driver IC2
The second output terminal of first microcontroller, one end of the end the OUTA connection resistance R27 of bridge driver IC2, resistance R27's is another
End is separately connected one end of resistance R28 and the grid of metal-oxide-semiconductor Q4, and the other end of resistance R28 is separately connected ground terminal and metal-oxide-semiconductor Q4
The drain electrode of source electrode, metal-oxide-semiconductor Q4 is separately connected the anode of diode D8 and one end of inductance L1, and the cathode of diode D8 is separately connected
One end of capacitor C16, the output end of reverse-connection preventing circuit and white light one end, the other end of capacitor C16 is separately connected inductance L1
The other end and white light the other end, bridge driver IC2 OUT terminal connection resistance R29 one end, resistance R29's is another
End is separately connected one end of resistance R30 and the grid of metal-oxide-semiconductor Q5, and the other end of resistance R30 is separately connected ground terminal and metal-oxide-semiconductor Q5
The drain electrode of source electrode, metal-oxide-semiconductor Q5 is separately connected the anode of diode D9 and one end of inductance L2, and the cathode of diode D9 is separately connected
One end of capacitor C17, the output end of reverse-connection preventing circuit and warm light lamp one end, the other end of capacitor C17 is separately connected inductance L2
The other end and warm light lamp the other end.
8. a kind of LED power circuit of tunable optical color-temperature regulating according to claim 1, which is characterized in that the MCU control
Light-adjusting module further includes voltage regulator circuit, the output end of the input terminal connection reverse-connection preventing circuit of the voltage regulator circuit, voltage regulator circuit
First output end connect PWM light adjusting circuit feeder ear, the second output terminal of voltage regulator circuit be separately connected the first microcontroller and
The feeder ear of first RF RF transceiver.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820688326.1U CN208158951U (en) | 2018-05-10 | 2018-05-10 | A kind of LED power circuit of tunable optical color-temperature regulating |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820688326.1U CN208158951U (en) | 2018-05-10 | 2018-05-10 | A kind of LED power circuit of tunable optical color-temperature regulating |
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| CN208158951U true CN208158951U (en) | 2018-11-27 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109640450A (en) * | 2018-12-27 | 2019-04-16 | 重庆绿色科技开发（集团）有限公司 | Three primary colours multi color temperature LED street lamp intelligent control |
| CN109922585A (en) * | 2019-04-10 | 2019-06-21 | 宁波市星耀智能科技有限公司 | A kind of lighting control circuit |
| CN110035586A (en) * | 2019-05-21 | 2019-07-19 | 横店集团得邦照明股份有限公司 | It is a kind of to realize the color circuit and its implementation of color-temperature regulating toning suitable for high efficiency |
| CN110996442A (en) * | 2019-12-04 | 2020-04-10 | 江西洪都航空工业集团有限责任公司 | LED drive circuit |
-
2018
- 2018-05-10 CN CN201820688326.1U patent/CN208158951U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109640450A (en) * | 2018-12-27 | 2019-04-16 | 重庆绿色科技开发（集团）有限公司 | Three primary colours multi color temperature LED street lamp intelligent control |
| CN109922585A (en) * | 2019-04-10 | 2019-06-21 | 宁波市星耀智能科技有限公司 | A kind of lighting control circuit |
| CN110035586A (en) * | 2019-05-21 | 2019-07-19 | 横店集团得邦照明股份有限公司 | It is a kind of to realize the color circuit and its implementation of color-temperature regulating toning suitable for high efficiency |
| CN110996442A (en) * | 2019-12-04 | 2020-04-10 | 江西洪都航空工业集团有限责任公司 | LED drive circuit |
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