CN209402781U - A kind of ultra-thin photovoltaic intelligent dimming power control circuit - Google Patents
A kind of ultra-thin photovoltaic intelligent dimming power control circuit Download PDFInfo
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- CN209402781U CN209402781U CN201821989242.8U CN201821989242U CN209402781U CN 209402781 U CN209402781 U CN 209402781U CN 201821989242 U CN201821989242 U CN 201821989242U CN 209402781 U CN209402781 U CN 209402781U
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Abstract
A kind of ultra-thin photovoltaic intelligent dimming power control circuit, comprising: rectification module dims lamp group with the control module of the rectification electric connection, with the constant-current driven module of control module electric connection, with the light-adjusting module of constant-current driven module electric connection, the signal input port being connected with the light-adjusting module and the LED being electrically connected with the constant-current driven module；Wherein, transformer is provided between the control module and the constant-current driven module, the control module is connected by the transformer with its constant-current driven module.Light adjusting circuit can carry out a variety of dim signal processing and realize a variety of light modulation compatibilities, and PWM in this circuit, and linearly, the three-in-one light modulation of direct current may make and dim more accurate, flicker free.
Description
Technical field
The utility model relates to power-supply device technical field, more specifically to a kind of ultra-thin photovoltaic intelligent dimming
Power control circuit.
Background technique
Currently, intelligent dimming power supply using more and more extensive, for light source, light modulation is a kind of considerable skill
Art can be further realized energy-saving and emission-reduction because it can not only provide a comfortable lighting environment, and LED product must meet difference
The demand of application environment, therefore, LED luminance control function are also highly important.
LED dimming power source is to carry out brightness adjustment control mode (brightness control) with DC input voitage by adjusting exchange,
The light modulation of intelligent control lighting system can be matched.Existing LED dimming power source usually utilizes line voltage through over commutation, filtering
Afterwards, using PWM (Pulse Width Modulation, pulse width are modulated) technology, in conjunction with voltage sample or current sample electricity
Road feeds back to PWM main control chip, realizes that voltage or stablizing for electric current export.Since impulse modulation control is work at higher frequencies
Make, LED driving circuit can make EMI (Electro Magnetic Interference, electromagnetic interference), and problem is more
Seriously, when electric current and voltage are modulated by high-frequency oscillation signal, will generate the dimming function of electromagnetic noise and circuit also compared with
It is single.
Utility model content
Purpose of the utility model is to solve the above-mentioned prior art, there are electromagnetic noise and dimming function are single
Defect provides ultra-thin photovoltaic intelligent dimming power control circuit.
The purpose of this utility model is achieved through the following technical solutions:
A kind of ultra-thin photovoltaic intelligent dimming power control circuit, comprising: rectification module is electrically connected with the rectification
Control module, with the control module be electrically connected constant-current driven module, with the constant-current driven module be electrically connected
Light-adjusting module, the signal input port being connected with the light-adjusting module and with the constant-current driven module be electrically connected
LED dims lamp group；When input current passes through, its electric current is carried out rectifying and wave-filtering, therefore the rectification module by the rectification module
EMC (Electro Magnetic Compatibility) electromagnetic compatibility can be achieved, and make input current with the shape of direct current
Formula input control module, control module are further controlled its power factor, improve the utilization rate of electric power, the constant current driving
Module can carry out PWM current constant control, and the signal input port receives dim signal and is just input to light-adjusting module, dim signal warp
LED light modulation lamp group is transmitted to through the constant-current driven module after the light-adjusting module processing and controls the LED light modulation lamp group
Brightness achievees the effect that intelligent dimming；Wherein, transformer, institute are provided between the control module and the constant-current driven module
It states control module and is connected by the transformer with its constant-current driven module；The rectification module include: EMI filter circuit,
And the bridge rectifier being electrically connected with the EMI filter circuit；The control module include: the first filter unit, with
The power factor control circuit that first filter unit is electrically connected；The constant-current driven module includes: rectification unit and institute
The second filter unit that the constant-current control circuit and the constant-current control circuit for stating rectification unit electric connection are electrically connected；It is described
Light-adjusting module includes: dim signal processing circuit and the pressure stabilizing being electrically connected with dim signal processing circuit power supply electricity
Road.
Preferably, the EMI filter circuit includes inductance LF1, resistance R24, resistance R25, inductance LF2 and capacitor CX1,
The EMI filter circuit realizes filtering for inhibiting high-frequency interferencing signal；Wherein, the resistance R24 connects with resistance R25,
And both ends connect the inductance LF1 output end and inductance LF2 input terminal, the both ends the capacitor CX1 are connect with the inductance LF2,
In addition the inductance LF1 input terminal is further connected with varistor VR2 and fuse F1, and can be used for the overcurrent and over-voltage to circuit
Protection.
Preferably, first filter unit includes capacitor C21, inductance L4, varistor VR1 and capacitor C3, is used for
The signal that the rectification module exports further is filtered；The both ends the capacitor C21 and the bridge rectifier export
End 3 and output end 4 connect, and the both ends capacitor C3 are connect with the varistor VR1, and the connection of the one end the inductance L4 is described pressure-sensitive
Resistance VR1 and capacitor C3, the other end then connect capacitor C2, and the capacitor C2 other end and varistor VR1 and capacitor C3
It is connected.
Preferably, the power factor control circuit includes control chip U1 and its peripheral circuit, the peripheral circuit one
One capacitor CY1 of end connection, and the capacitor CY1 other end connects the light-adjusting module；The control chip U1 be set as PFC power because
Number correcting chip, is equipped with peripheral circuit and can be used for realizing that power factor is controllable；The peripheral circuit of the control chip U1
Including starting logic circuit, voltage regulator circuit, ON-OFF control circuit and detection circuit；Wherein, the starting logic circuit
Including capacitor C20, capacitor C5 and resistance R23；The voltage regulator circuit include resistance R8, resistance R42, resistance R4 and
Capacitor C7；The ON-OFF control circuit includes metal-oxide-semiconductor (Metal Oxide Semiconductor, field effect transistor) Q2, two
Pole pipe D3, resistance R12, resistance R10, resistance R13 and resistance R10；The detection circuit include capacitor C12, resistance R14 and
First detection resistance, wherein the metal-oxide-semiconductor Q2 grid passes through resistance R12 and resistance R10 connection PFC PFC core
The port DRV of piece, source electrode are ground state, and drain electrode is connected to diode D4, and the diode D4 mono- is terminated with resistance R28, electricity
Hinder R37, and the two is set as in parallel, the other end connect resistance R9, capacitor C6 and resistance R16, the resistance R9, capacitor C6 with
And resistance R16 is set as in parallel, and the other end and the rectification unit are electrically connected；In addition, resistance R4 mono- is terminated with diode
D5 and resistance R18, and the two is set as connecting, the one end the resistance R18 connects the PFC PFC chip
Vdd terminal mouth.
Preferably, the power factor control circuit further includes start-up circuit, for starting the power factor controlling electricity
The running on road, wherein the start-up circuit includes resistance R6, resistance R7, capacitor C4 and capacitor C10；And the institute capacitor C4
And capacitor C10 is set as in parallel；Wherein, the start-up circuit is also parallel with resistance R39, resistance R40 and capacitor C22, and
And the resistance R39, resistance R40 and capacitor C22 are set as connecting, the one end the resistance R40 is also connected with a resistance R41, and
The resistance R41 other end is connect with capacitor C5 and resistance R23 in starting logic circuit.
Preferably, the rectification unit includes rectifier diode D1, the first filter capacitor and the first divider resistance, institute
Rectification unit is stated for being rectified again to the output current signal of the control module；Wherein, the rectifier diode D1
It is connect with described transformer one end, first filter capacitor is in parallel with first divider resistance and is separately connected transformer two
End.
Preferably, the constant-current control circuit includes constant current chip U2 and the second detection resistance, the current constant control electricity
Road is used for PWM current constant control；The constant current chip is set as PWM constant current core, wherein second detection resistance one end and institute
The electric connection of the PWM constant current port core SEN is stated, and the other end is connect with the rectification unit.
Preferably, second filter unit includes diode D6, inductance L2, inductance LF3 and the first filter capacitor, institute
The second filter unit is stated for being filtered again to the output current signal of the control module；The one end the diode D6 with
The constant-current control circuit connection, and the other end connects the one end the inductance L2, first filter capacitor and inductance LF3 are inputted
End is connected, and the LF3 output end connects the LED and dims lamp group.
Preferably, the dim signal processing circuit includes following circuit and conversion circuit, the dim signal processing
Circuit is for receiving and handling the dim signal；It is wherein described that circuit is followed to include the second divider resistance, the second filtered electrical
Appearance and follower；The conversion circuit include amplifier A, resistance R35, resistance R45, resistance R32, resistance R33, resistance R11 with
And resistance R27, and described conversion circuit one end is also connected with a capacitor R26, diode ZD1, capacitor C8 and inductance LF4, and institute
Inductance LF4 input terminal is stated to connect with the signal input port.
Preferably, the voltage stabilizing power supplying circuit includes capacitor C16, diode ZD2, pressure stabilizing triode Q1 and pressure stabilizing electricity
Resistance, the voltage stabilizing power supplying circuit is for providing the light-adjusting module stable operating voltage；The one end the capacitor C6 and three poles
The connection of pipe Q1 emitter, and the other end is connected with the one end diode ZD2, the transistor collector and described voltage regulation resistance one end
It is connected, and base stage is separately connected the voltage regulation resistance and the one end diode ZD2.
For the utility model bring the utility model has the advantages that in this circuit, current signal can carry out rectifying and wave-filtering by rectification module
The conversion for realizing current forms, converts alternating current to available direct current and realizes EMC electromagnetic compatibility simultaneously, and it is dry to reduce electromagnetism
It disturbs, the rectification module is electrically connected control module and further realizes that power factor is controllable, improves the utilization rate of electric power, light modulation letter
Number by control module handle after through constant-current driven module carry out current constant control and be input to LED dim lamp group further control it is bright
Degree, wherein the light-adjusting module can be handled a variety of dim signals, realize a variety of light modulation compatibilities.
Detailed description of the invention
Fig. 1 is the circuit diagram of the utility model embodiment；
Fig. 2 is the circuit structure block diagram of the utility model embodiment.
Wherein: 1, rectification module, 101, protection circuit, 102, EMI filter circuit, 103, bridge rectifier, 2, control
Module, the 201, first filter unit, 202, start-up circuit, 203, starting logic circuit, 204, voltage regulator circuit, 205, switch
Control circuit, 206, detection circuit, 207, absorbing circuit, 208, PFC PFC chip, 3, transformer, 4, constant current drive
Dynamic circuit, 401, rectification unit, 402, constant-current control circuit, the 403, second filter unit, 5, light-adjusting module, 501, pressure stabilizing power supply
Circuit, 502, follow circuit, 503, conversion circuit, 6, signal input port, 7, LED dim lamp group.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
It clearly and completely describes, it is clear that the embodiments are a part of the embodiments of the present invention, rather than whole implementation
Example.Based on the embodiments of the present invention, those of ordinary skill in the art are obtained without creative efforts
The every other embodiment obtained, fall within the protection scope of the utility model.
The specification and claims of the utility model and term " includes " and any deformation in the attached drawing, meaning
Figure, which is to cover, non-exclusive includes.Such as contain the process, method, system, product or equipment of a series of steps or units
It is not limited to listed step or unit, but optionally further comprising the step of not listing or unit, or optionally also
Including the other step or units intrinsic for these process, methods, product or equipment.
Referenced herein " embodiment " is it is meant that a particular feature, structure, or characteristic described can wrap in conjunction with the embodiments
It is contained at least one embodiment of the utility model., which there is the phrase, in each position in the description to be each meant
Identical embodiment, nor the independent or alternative embodiment with other embodiments mutual exclusion.Those skilled in the art are explicit
Ground and implicitly understand, embodiment described herein can be combined with other embodiments.
In the utility model specification and claims, resistance R1-Rn, the capacitor C1-Cn being previously mentioned, inductance L1-Ln,
LF1-LFn and diode D1-Dn, and represented is corresponding element identifier, not in claim or specification
Mark limits, in addition, element identifier here can also be indicated with other forms, it may include letter, number or it is alphabetical and
Number combinatorics on words etc., is not construed as limiting here.
As shown in Figs. 1-2, a kind of ultra-thin photovoltaic intelligent dimming power control circuit, comprising: rectification module 1 and institute
It states the control module 2 that rectification is electrically connected and the constant-current driven module 4 that the control module 2 is electrically connected, driven with the constant current
Light-adjusting module 5 that dynamic model block 4 is electrically connected, the signal input port 6 that is connected with the light-adjusting module 5 and with the constant current
The LED that drive module 4 is electrically connected dims lamp group 7；When input current passes through, the rectification module 1 carries out its electric current whole
Stream filtering is, it can be achieved that EMC electromagnetic compatibility so that input current input control module 2 in the form of direct current, control module 2 into
Row further controls its power factor, improves the utilization rate of electric power, the constant-current driven module 4 can further progress PWM constant current
Control, the signal input port 6 receive dim signal and are just input to light-adjusting module 5, and dim signal is after the processing of light-adjusting module 5
Reach intelligent dimming through the brightness that the constant-current driven module 4 is transmitted to LED light modulation lamp group 7 and controls the LED light modulation lamp group 7
Effect；Wherein, transformer 3 is provided between the control module 2 and the constant-current driven module 4, the control module 2 is logical
The transformer 3 is crossed to be connected with its constant-current driven module 4；The rectification module 1 includes: EMI filter circuit 102, Yi Jiyu
The bridge rectifier 103 that the EMI filter circuit 102 is electrically connected, the bridge rectifier 103 are connected by four diodes
It is connected into " bridge " formula structure, is used to the alternating current of input being converted into direct current in circuit；The control module 2 includes: the first filter
Wave unit 201, the power factor control circuit being electrically connected with first filter unit 201；The constant-current driven module 4 wraps
It includes: rectification unit 401, the constant-current control circuit 402 and the constant-current control circuit being electrically connected with the rectification unit 401
402 the second filter units 403 being electrically connected；The light-adjusting module 5 include: dim signal processing circuit and with the tune
The voltage stabilizing power supplying circuit 501 that optical signal processing circuit is electrically connected.
In the utility model embodiment, the EMI filter circuit 102 includes inductance LF1, resistance R24, resistance R25, electricity
Feel LF2 and capacitor CX1, the EMI filter circuit 102 realizes filtering for inhibiting high-frequency interferencing signal；Wherein, the electricity
Resistance R24 connects with resistance R25, and both ends connect the inductance LF1 output end and inductance LF2 input terminal, the both ends the capacitor CX1
It is connect with the inductance LF2, in addition the inductance LF1 input terminal is further connected with varistor VR2 and fuse F1, described pressure-sensitive
Resistance VR2 and fuse F1 may make up protection circuit 101, when circuit input current overtension can automatic shutdown circuit, therefore
It can be used for the overcurrent and overvoltage protection to circuit.
In the utility model embodiment, first filter unit 201 includes capacitor C21, inductance L4, varistor
VR1 and capacitor C3, first filter unit 201 can be used for carrying out the current signal that the rectification module 1 exports into one
Step filtering；The both ends the capacitor C21 are connect with 103 output end 3 of bridge rectifier and output end 4, the both ends capacitor C3
It is connect with the varistor VR1, and capacitor C3 is set as in parallel with varistor VR1, described in the connection of the one end the inductance L4
Varistor VR1 and capacitor C3, the other end then connect capacitor C2, and the capacitor C2 other end and varistor VR1 and electricity
Hold C3 to be connected.
As shown in Fig. 2, in the utility model embodiment, the power factor control circuit include control chip U1 and its
Peripheral circuit, described peripheral circuit one end connects a capacitor CY1, and the capacitor CY1 other end connects the light-adjusting module 5, described
Capacitor CY1 is set as filter capacitor, and certain filter action is played to its circuit；The control chip U1 is set as PFC power
Factor correcting chip 208 is equipped with peripheral circuit and can be used for realizing that power factor is controllable, the periphery of the control chip U1
Circuit includes starting logic circuit 203, voltage regulator circuit 204, ON-OFF control circuit 205 and detection circuit 206；Wherein,
The starting logic circuit 203 includes capacitor C20, capacitor C5 and resistance R23, can be used for adjusting opening for the control module 2
Dynamic logic；The voltage regulator circuit 204 includes resistance R8, resistance R42, resistance R4 and capacitor C7, for adjusting the control
The output voltage of molding block 2；The ON-OFF control circuit 205 includes metal-oxide-semiconductor Q2, diode D3, resistance R12, resistance R10, electricity
R13 and resistance R10, the metal-oxide-semiconductor Q2, which are hindered, as the switching tube in circuit controls electric signal transmission for cutting off electric current；Institute
Stating detection circuit 206 includes capacitor C12, resistance R14 and the first detection resistance, for detecting the ON-OFF control circuit 205
Size of current, wherein first detection resistance includes resistance R1, resistance R2 and resistance R3；The grid of the metal-oxide-semiconductor Q2
By the port DRV of resistance R12 and resistance R10 connection PFC PFC chip 208, source electrode is ground state for pole, and
Drain electrode is connected to diode D4, and the diode D4 mono- is terminated with resistance R28, resistance R37, and the two is set as in parallel, the other end
Resistance R9, capacitor C6 and resistance R16 are connected, the resistance R9, capacitor C6 and resistance R16 are set as in parallel, and the other end
It is electrically connected with the rectification unit 401, wherein diode D4, resistance R28, resistance R37, resistance R9, capacitor C6 and resistance
R16 collectively constitutes an absorbing circuit 207, can absorb the 3 inner part energy of transformer；In addition, resistance R4 mono- is terminated with two poles
Pipe D5 and resistance R18 can play the effect of power supply to the peripheral circuit, and the two is set as connecting, the resistance R18 mono-
End connects the vdd terminal mouth of the PFC PFC chip 208.
In the utility model embodiment, the power factor control circuit further includes start-up circuit 202, for starting
State the running of power factor control circuit, wherein the start-up circuit 202 includes resistance R6, resistance R7, capacitor C4 and capacitor
C10；And the institute capacitor C4 and capacitor C10 is set as in parallel；Wherein, the start-up circuit 202 be also parallel with resistance R39,
Resistance R40 and capacitor C22, and the resistance R39, resistance R40 and capacitor C22 are set as connecting, the resistance R40 mono-
End is also connected with a resistance R41, and capacitor C5 and resistance R23 connects in the resistance R41 other end and starting logic circuit 203
It connects.
In the utility model embodiment, the rectification unit 401 include rectifier diode D1, the first filter capacitor, with
And first divider resistance, the rectification unit 401 for rectifying the output current signal of the control module 2 again；
First filter capacitor is set as in parallel with first divider resistance, wherein first filter capacitor include capacitor C1,
Capacitor C2, capacitor C13 and capacitor C15, first divider resistance include resistance R34, resistance R22, resistance R20 and resistance
R21；The rectifier diode D1 is connect with described 3 one end of transformer, first filter capacitor and first divider resistance
It is in parallel and be separately connected 3 both ends of transformer.
In the utility model embodiment, the constant-current control circuit 402 includes the detection electricity of constant current chip U2 and second
Resistance, the constant-current control circuit 402 are used for PWM current constant control；The constant current chip is set as PWM constant current core, second inspection
Measuring resistance one end and the PWM constant current port core SEN are electrically connected, and the other end is connect with the rectification unit 401, wherein
Second detection resistance includes resistance R29, resistance R30 and resistance R31, can be used for detecting the constant-current control circuit 402
Size of current.
In the utility model embodiment, second filter unit 403 include diode D6, inductance L2, inductance LF3 with
And first filter capacitor, second filter unit 403 for filtering the output current signal of the control module 2 again
Wave；The one end the diode D6 is connect with the constant-current control circuit 402, and the other end connects the one end the inductance L2, described
First filter capacitor is connected with inductance LF3 input terminal, and the LF3 output end connects the LED and dims lamp group 7；Wherein, described
First filter capacitor includes capacitor C11 and capacitor C14, and the two is set as in parallel.
In the utility model embodiment, the dim signal processing circuit includes following circuit 502 and conversion circuit
503, the dim signal processing circuit is for receiving and handling the dim signal；Wherein, described to follow the circuit 502 to include
Second divider resistance, the second filter capacitor and follower, second divider resistance include resistance R36 and resistance R38, institute
Stating the second filter capacitor includes capacitor C17, capacitor C18 and capacitor C19, and the follower includes diode D7 and amplifier B；
The conversion circuit 503 includes amplifier A, resistance R35, resistance R45, resistance R32, resistance R33, resistance R11 and resistance R27,
The conversion circuit 503 is passed for the dim signal that the signal input port 6 inputs to be converted into dimmer voltage signal
It is defeated；Described 503 one end of conversion circuit is also connected with a capacitor R26, diode ZD1, capacitor C8 and inductance LF4, and the inductance
LF4 input terminal is connect with the signal input port 6.In addition, the dim signal supports 0-10V dim signal, 0- simultaneously
100K resistance, 10V pwm signal, if input is 0-10V dim signal, and signal directly passes through amplifier B with then directly passing
It is defeated by late-class circuit, then amplifier A is responsible for the resistance value of detection resistance if 0-100K resistance, is converted into dim signal by amplifier B
It is transferred to late-class circuit, if pwm signal, and signal is just transmitted to late-class circuit after amplifier B follows filtering, therefore realizes pair
A variety of dim signals carry out brightness adjustment control.
In the utility model embodiment, the voltage stabilizing power supplying circuit 501 includes capacitor C16, diode ZD2, pressure stabilizing three
Pole pipe Q1 and voltage regulation resistance, circuit is for providing stable operating voltage to the light-adjusting module 5；Wherein, the pressure stabilizing electricity
Resistance includes resistance R15, resistance R17 and resistance R19, and three is set as parallel connection, the one end the capacitor C6 and triode
The connection of Q1 emitter, and the other end is connected with the one end diode ZD2, the transistor collector and described voltage regulation resistance one end phase
Even, and base stage is separately connected the voltage regulation resistance and the one end diode ZD2.
It, cannot the above content is specific preferred embodiment further detailed description of the utility model is combined
Assert that specific embodiment of the present utility model is only limited to these instructions.For the common of the utility model technical field
For technical staff, without departing from the concept of the premise utility, a number of simple deductions or replacements can also be made, all answers
When being considered as belonging to the protection scope of the utility model.
Claims (10)
1. a kind of ultra-thin photovoltaic intelligent dimming power control circuit characterized by comprising rectification module, with it is described whole
Flow the control module being electrically connected, the constant-current driven module being electrically connected with the control module and the constant-current driven module
The light-adjusting module of electric connection, the signal input port being connected with the light-adjusting module and with constant-current driven module electricity
Property connection LED dim lamp group；Wherein, transformer is provided between the control module and the constant-current driven module, it is described
Control module is connected by the transformer with its constant-current driven module；
The rectification module includes: EMI filter circuit, the bridge rectifier with EMI filter circuit electric connection；
The control module includes: the first filter unit, the power factor controlling being electrically connected with first filter unit electricity
Road；
The constant-current driven module include: rectification unit, with the rectification unit be electrically connected constant-current control circuit and with
The second filter unit that the constant-current control circuit is electrically connected；
The light-adjusting module includes: dim signal processing circuit, the pressure stabilizing being electrically connected with dim signal processing circuit confession
Circuit.
2. a kind of ultra-thin photovoltaic intelligent dimming power control circuit according to claim 1, which is characterized in that described
EMI filter circuit includes inductance LF1, resistance R24, resistance R25, inductance LF2 and capacitor CX1, wherein the resistance R24 with
Resistance R25 series connection, and both ends connect the inductance LF1 output end and inductance LF2 input terminal, the both ends the capacitor CX1 with it is described
Inductance LF2 connection, in addition the inductance LF1 input terminal is further connected with varistor VR2 and fuse F1, and can be used for circuit
Overcurrent and overvoltage protection.
3. a kind of ultra-thin photovoltaic intelligent dimming power control circuit according to claim 1, which is characterized in that described
First filter unit includes capacitor C21, inductance L4, varistor VR1 and capacitor C3, and the both ends capacitor C21 and the bridge-type are whole
Current circuit output end 3 and output end 4 connect, and the both ends capacitor C3 are connect with the varistor VR1, and the one end the inductance L4 connects
The varistor VR1 and capacitor C3 is met, the other end then connects capacitor C2, and the capacitor C2 other end and varistor
VR1 and capacitor C3 is connected.
4. a kind of ultra-thin photovoltaic intelligent dimming power control circuit according to claim 1, which is characterized in that described
Power factor control circuit includes control chip U1 and its peripheral circuit, and described peripheral circuit one end connects a capacitor CY1, and electricity
Hold the CY1 other end and connects the light-adjusting module；The control chip U1 is set as PFC PFC chip, for realizing
Power factor is controllable, and the peripheral circuit of the control chip U1 includes starting logic circuit, voltage regulator circuit, switch control electricity
Road and detection circuit；Wherein, the starting logic circuit includes capacitor C20, capacitor C5 and resistance R23；The voltage tune
Economize on electricity road includes resistance R8, resistance R42, resistance R4 and capacitor C7；The ON-OFF control circuit includes metal-oxide-semiconductor Q2, diode
D3, resistance R12, resistance R10, resistance R13 and resistance R10；The detection circuit includes capacitor C12, resistance R14 and first
Detection resistance, wherein the metal-oxide-semiconductor Q2 grid passes through resistance R12 and resistance R10 connection PFC PFC chip DRV
Port, source electrode are ground state, and drain electrode is connected to diode D4, and the diode D4 mono- is terminated with resistance R28, resistance R37, and
The two is set as in parallel, and the other end connects resistance R9, capacitor C6 and resistance R16, the resistance R9, capacitor C6 and resistance
R16 is set as in parallel, and the other end and the rectification unit are electrically connected；In addition, resistance R4 mono- be terminated with diode D5 and
Resistance R18, and the two is set as connecting, the one end the resistance R18 connects the PFC PFC chip vdd terminal mouth.
5. a kind of ultra-thin photovoltaic intelligent dimming power control circuit according to claim 4, which is characterized in that described
Power factor control circuit further includes start-up circuit, and the start-up circuit includes resistance R6, resistance R7, capacitor C4 and capacitor
C10；And the institute capacitor C4 and capacitor C10 is set as in parallel；Wherein, the start-up circuit is also parallel with resistance R39, resistance
R40 and capacitor C22, and the resistance R39, resistance R40 and capacitor C22 are set as connecting, and the one end the resistance R40 is also
A resistance R41 is connected, and the resistance R41 other end is connect with capacitor C5 and resistance R23 in starting logic circuit.
6. a kind of ultra-thin photovoltaic intelligent dimming power control circuit according to claim 1, which is characterized in that described
Rectification unit includes rectifier diode D1, the first filter capacitor and the first divider resistance, wherein the rectifier diode D1
It is connect with described transformer one end, first filter capacitor is in parallel with first divider resistance and is separately connected transformer two
End.
7. a kind of ultra-thin photovoltaic intelligent dimming power control circuit according to claim 1, which is characterized in that described
Constant-current control circuit includes constant current chip U2 and the second detection resistance, and the constant current chip is set as PWM constant current core, is used for
PWM current constant control, wherein second detection resistance one end and the PWM constant current port core SEN are electrically connected, and the other end
It is connect with the rectification unit.
8. a kind of ultra-thin photovoltaic intelligent dimming power control circuit according to claim 7, which is characterized in that described
Second filter unit includes diode D6, inductance L2, inductance LF3 and the first filter capacitor, the one end the diode D6 and institute
Constant-current control circuit connection is stated, and the other end connects the one end the inductance L2, first filter capacitor and inductance LF3 input terminal
It is connected, and the LF3 output end connects the LED and dims lamp group.
9. a kind of ultra-thin photovoltaic intelligent dimming power control circuit according to claim 1, which is characterized in that described
Dim signal processing circuit includes following circuit and conversion circuit, wherein described, to follow circuit include the second divider resistance, the
Two filter capacitors and follower；The conversion circuit includes amplifier A, resistance R35, resistance R45, resistance R32, resistance R33, electricity
R11 and resistance R27 is hindered, and described conversion circuit one end is also connected with a capacitor R26, diode ZD1, capacitor C8 and inductance
LF4, and the inductance LF4 input terminal is connect with the signal input port.
10. a kind of ultra-thin photovoltaic intelligent dimming power control circuit according to claim 1, which is characterized in that institute
Stating voltage stabilizing power supplying circuit includes capacitor C16, diode ZD2, pressure stabilizing triode Q1 and voltage regulation resistance, the one end the capacitor C6 with
The connection of triode Q1 emitter, and the other end is connected with the one end diode ZD2, the transistor collector and the voltage regulation resistance
One end is connected, and base stage is separately connected the voltage regulation resistance and the one end diode ZD2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821989242.8U CN209402781U (en) | 2018-11-29 | 2018-11-29 | A kind of ultra-thin photovoltaic intelligent dimming power control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821989242.8U CN209402781U (en) | 2018-11-29 | 2018-11-29 | A kind of ultra-thin photovoltaic intelligent dimming power control circuit |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110753422A (en) * | 2019-10-19 | 2020-02-04 | 浙江凯耀照明有限责任公司 | Quick start circuit applied to operational amplifier building |
| CN116546687A (en) * | 2023-07-07 | 2023-08-04 | 广东东菱电源科技有限公司 | Multi-machine parallel three-in-one current regulation anti-interference circuit |
-
2018
- 2018-11-29 CN CN201821989242.8U patent/CN209402781U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110753422A (en) * | 2019-10-19 | 2020-02-04 | 浙江凯耀照明有限责任公司 | Quick start circuit applied to operational amplifier building |
| CN110753422B (en) * | 2019-10-19 | 2021-12-03 | 浙江凯耀照明有限责任公司 | Quick start circuit applied to operational amplifier building |
| CN116546687A (en) * | 2023-07-07 | 2023-08-04 | 广东东菱电源科技有限公司 | Multi-machine parallel three-in-one current regulation anti-interference circuit |
| CN116546687B (en) * | 2023-07-07 | 2023-09-19 | 广东东菱电源科技有限公司 | Multi-machine parallel three-in-one current regulation anti-interference circuit |
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