CN209593833U - A kind of waterproof for photovoltaic, dimming driving circuit - Google Patents
A kind of waterproof for photovoltaic, dimming driving circuit Download PDFInfo
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- CN209593833U CN209593833U CN201822041784.9U CN201822041784U CN209593833U CN 209593833 U CN209593833 U CN 209593833U CN 201822041784 U CN201822041784 U CN 201822041784U CN 209593833 U CN209593833 U CN 209593833U
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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
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- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
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- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
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Abstract
The utility model relates to the actuation techniques fields of photovoltaic; disclose a kind of waterproof for photovoltaic, dimming driving circuit, the circuit includes low-pass filter circuit, the protection circuit being electrically connected with the low-pass filter circuit, the governor circuit being electrically connected with the protection circuit and the output circuit being electrically connected with the governor circuit.The utility model can be realized in photovoltaic waterproof and light modulation driving, and the light modulation linearity is high, and entire adjustment process flicker free.
Description
Technical field
The utility model relates to the actuation techniques field of photovoltaic more particularly to a kind of waterproof for photovoltaic,
Dimming driving circuit.
Background technique
Currently, photovoltaic is more more and more universal in people's lives, especially light emitting diode (Light-Emitting
Diode, LED) use, allow more people to photovoltaic have update understanding, LED is that one kind can convert electrical energy into
Luminous energy and the electronic component with diode characteristic, and current direction is one-way conduction.The conventional incandescent etc. used before
It can be dimmed by configuring light modulator, to meet the needs of people, LED light also needs to be dimmed, and people couple
The requirement of light is higher and higher.When people are in different occasions, need to adjust different brightness with meet demand, if individually
Configure light adjusting controller higher cost, and in the market most light adjusting controller be it is non-linear, in light modulation, loop current is not up to
Electric current is maintained to controllable.As it can be seen that there is poor linearity on dimming driving circuit, having flashing in current photovoltaic.
Utility model content
Purpose of the utility model is to solve above-mentioned poor linearity of the existing technology, there is the problem of flashing, mentions
For a kind of waterproof for photovoltaic, dimming driving circuit.
The purpose of this utility model is achieved through the following technical solutions:
A kind of waterproof for photovoltaic, dimming driving circuit, comprising: low-pass filter circuit, with the low-pass filtering
The protection circuit of circuit electrical connection is electrically connected with the governor circuit for protecting circuit to be electrically connected and with the governor circuit
Output circuit, wherein
The low-pass filter circuit includes the first filter circuit and is electrically connected with the first filter circuit output end
Bridge rectifier；
The protection circuit includes the first protection circuit, and first be electrically connected with the first protection circuit output end
Absorbing circuit；
The governor circuit include main control chip circuit, the adjusting control circuit being electrically connected with the main control chip circuit,
And the adjusting circuit of the electrical connection main control chip circuit；
The second filter circuit that the output circuit includes voltage conversion circuit, is electrically connected with the voltage conversion circuit.
Preferably, first filter circuit includes voltage input end, inductance L3, inductance L4, inductance L1, inductance L2, electricity
Hinder R37, resistance R24, capacitor CX1, resistance R1, R2, varistor VR1 and fuse F1, wherein the fuse F1 and institute
It states the electrical connection of voltage input end anode and connects with the varistor VR1, the varistor VR1 is electrically connected the inductance L3
Two input ports of one end and the cathode of the connection voltage input end.The both ends the capacitor CX1 are electrically connected inductance L3 two
Output end, the inductance L1 is in parallel with resistance R24 and is electrically connected the input terminal of the inductance L3 output end and inductance L4, the electricity
Sense L2 is in parallel with resistance R37 and is electrically connected another input terminal of the inductance L3 another output end and inductance L4, resistance R1, R2 string
Connection, the inductance L4 output end are electrically connected the bridge rectifier.
Wherein, inductance L3, inductance L4, inductance L1, inductance L2 are used for the frequency other than the frequency point of specific frequency or the frequency point
Rate is effectively filtered out, and pure direct current is provided for circuit, is obtained a specific frequency or is eliminated a specific frequency, resistance
R37, resistance R24 are used to eliminate the current oscillation in circuit to inductance L1 and L2, and resistance R1, R2 are for shunting；Capacitor CX1 is used for
It allows low-frequency current to pass through, filters out High-frequency Interference clutter composition, reduce the interference to circuit；The varistor VR1 is used for
It is anti-lightning strike, it is formed simultaneously overvoltage protection；The fuse F1 is used for itself fusing when input current is excessive while when the temperature is excessively high
Cut off electric current, protection circuit safety operation.
Preferably, the first protection circuit includes diode D9, electrolytic capacitor C13, the electricity in parallel with electrolytic capacitor C13
The capacitor C2 and the capacitor C14 in parallel with the capacitor C2 of R28, electrical connection the bridge rectifier anode and cathode are hindered,
Wherein, after diode D9 input terminal is electrically connected with bridge rectifier anode, and diode D9 connects with electrolytic capacitor C13
It is electrically connected to the cathode of the bridge rectifier.
Wherein, diode D9, electrolytic capacitor C13, the resistance R28 in parallel with electrolytic capacitor C13 are used to that circuit to be protected to run,
It prevents from being struck by lightning, diode D9 is also used to one-way conduction, rectifies circuit；Electrolytic capacitor C13 is used for according to its charge and discharge spy
Property, so that the pulsating dc voltage after rectifying is become relatively steady dc voltage, resistance R28 is used to be electrolytic capacitor C13
Electricity is let out, buffer function is played to the charge/discharge speed of electrolytic capacitor C13.
Preferably, first absorbing circuit includes: resistance R19, resistance R9, capacitor C3, resistance R20 and diode
D3, wherein be sequentially connected in series company with resistance R20 and diode D3 again after resistance R19, resistance R9 and capacitor C3 three are in parallel
It connects, the input terminal of diode D3 is electrically connected to the primary port of the voltage conversion circuit again.
Wherein, resistance R19, resistance R9, capacitor C3, resistance R20 and diode D3 are for absorbing the voltage conversion electricity
Road primary is not transformed into secondary energy completely, while being rectified using diode D3, and the bridge rectifier anode is made
The electric current of outflow is transmitted directly to the voltage conversion circuit primary, and capacitor C3 is also used to storage energy.
Preferably, the main control chip circuit includes main control chip U1, for charging to the main control chip U1
Start-up circuit and ON-OFF control circuit, wherein
The main control chip U1 model SY5882；
The start-up circuit includes resistance R4, electrolytic capacitor C7, capacitor C6, zener diode ZD1, resistance R29, wherein
Electrolytic capacitor C7 connects with zener diode ZD1 after being connected in parallel with capacitor C6 and is output to the one end resistance R29, and resistance R29
The other end is electrically connected with the pin VIN of the main control chip U1, while being also electrically connected voltage input port in the one end resistance R4
VIN。
Wherein, the main control chip U1 model SY5882, for providing constant current illumination for circuit, linearity light adjusting is without frequency
It dodges, allows loop current to reach controllable and maintain electric current, keep constant current；Resistance R4 is used for detection circuit electric current, electrolytic capacitor C7 and electricity
Hold C6 and be used for storage energy, is opened by start-up resistor R29 to described main control chip U1 pin VIN mono- when reaching starting voltage
Dynamic signal；Zener diode ZD1 is used for burning voltage.
Preferably, the ON-OFF control circuit includes metal-oxide-semiconductor Q1, capacitor C10, resistance R18, resistance R12, resistance R13, electricity
Hinder R14 and resistance R8, wherein one end is electrically connected metal-oxide-semiconductor Q1 after resistance R18, resistance R12, resistance R13, resistance R14 are in parallel
Source S, the other end be electrically connected adjusting control circuit；Capacitor C10 is connected in parallel between the drain D of metal-oxide-semiconductor Q1 and source level S, and institute
State the port pin ISEN that source level S is directly electrically connected to main control chip U1.
Wherein, metal-oxide-semiconductor Q1 is used for the on-off of control circuit, and capacitor C10 is used for when metal-oxide-semiconductor Q1 is disconnected, by the voltage
The energy transmission that conversion circuit primary does not convert carries out current detecting to the main control chip U1 pin ISEN；Resistance R18, electricity
R12, resistance R13, resistance R14 is hindered to discharge as discharge resistance for metal-oxide-semiconductor Q1 for examining stream, resistance R8.
Preferably, the adjusting circuit includes the first adjusting circuit and second adjusts circuit, and described first adjusts circuit
Including capacitor C12, zener diode ZD2, capacitor C12 and zener diode ZD2 is connected to electrolytic capacitor C7's after being sequentially connected in series
Input terminal, capacitor C12 input terminal are connect with the pin ADIM of main control chip U1, voltage adjustment when for dim signal transmission；
The second adjusting circuit includes the resistance R3, resistance R11 and resistance R10 being sequentially connected in series, and is connected in parallel on the both ends resistance R10
Diode D8, resistance R3 input terminal are connect with main control chip U1 pin DRV, and the one end resistance R10 is connect with metal-oxide-semiconductor Q1 grid G.
Wherein, zener diode ZD2 is for stablizing the dimmer voltage exported from the main control chip U1 pin ADIM；Successively
Concatenated resistance R3, resistance R11 are used to limit the pulse current of the governor circuit pin DRV output, resistance R10 and diode
D8 parallel connection is for adjusting pulse drive signal, and diode D8 is used for pressure stabilizing, protects to metal-oxide-semiconductor Q1, so that reversely hitting
Increased electric current flows through diode D8 and is not passed through metal-oxide-semiconductor Q1 when wearing.
Preferably, the adjusting control circuit includes dimming input circuit and light modulation power supply circuit, wherein the light modulation
Input circuit includes dim signal input and output end, capacitor C4, capacitor C11, resistance R7 and dim signal conversion core
Piece, wherein the dim signal conversion chip model DIM-BOARD, the dim signal input terminal are electrically connected the light modulation
Signal conversion chip pin 7, the dim signal output end are electrically connected the dim signal conversion chip pin 4, and described
Dim signal conversion chip pin 4,5 and 6 is in parallel even, one end and main control chip UI after capacitor C4 is in parallel with resistance R7 and C11
Pin COMP electrical connection, the other end are electrically connected with the dim signal conversion chip pin 2, and the resistance R7 connects with C11.
Wherein, capacitor C4 formation external compensation circuit in parallel with resistance R7 and C11, compensates loop and is then attached to
The main control chip U1 is used for the pin COMP of external compensation circuit；The light modulation conversion chip is used for the dim signal input
Being converted to the main control chip U1 being capable of received signal.
Preferably, the light modulation power supply circuit includes resistance R26, diode D4, resistance R30 and capacitor C1, and
Connect a Zero Current Switch ZCS before resistance R26 input terminal, wherein resistance R26, diode D4, resistance R30 are sequentially connected in series company
It connects, and the one end resistance R26 is electrically connected to the primary port of the voltage conversion circuit, the one end resistance R30 is electrically connected to light modulation
The pin 1 of signal conversion chip, capacitor C1 are grounded after connecting with diode D4 output end.
Wherein, R26 is inspection leakage resistance, and the electric current for flowing through to the voltage conversion circuit primary carries out, diode D4
It for circuit one-way conduction, and is rectified, resistance R26, diode D4, resistance R30 convert the voltage after being sequentially connected in series
The electric current that primary circuit flows through is integrated, then is electrically connected to the dim signal conversion chip pin 1, is believed for the light modulation
The power supply of number conversion chip；The Zero Current Switch ZCS flows through the electric current of the switch ZCS when turning on and off for switch ZCS
Equal to zero, to reduce the switch ZCS loss to improve switching frequency, the power density of power supply is helped to improve.
Preferably, second filter circuit includes filtering sub-circuit, the Yi Ji connecting with the voltage conversion circuit
Two absorbing circuits；
Wherein, the filtering sub-circuit includes: capacitor CY1, capacitor CY2, electrolytic capacitor C8, electrolytic capacitor C9, Yi Ji electricity
Feeling L5, capacitor CY1 and CY2 are respectively electrically connected between the input terminal of primary and described inductance L5 of the voltage conversion circuit,
And a voltage input port is connected in the one end capacitor CY1, the other end is connect with voltage conversion circuit primary port, the voltage
Dim signal conversion chip pin 4, the electrolytic capacitor both ends and inductance L5 are connected to after input port connection electrolytic capacitor C9
Input terminal connection；
Second absorbing circuit includes capacitor C15, resistance R16, resistance R35, diode D7 and diode D5,
In, connect after resistance R16 is in parallel with resistance R35 with capacitor C15, then with diode D7 and diode D5 in parallel again
Parallel connection, corresponding common input end are connected to voltage conversion circuit secondary ports common output end and are connected to inductance L5 input terminal.
Wherein, capacitor CY1, capacitor CY2 are for being filtered the voltage conversion circuit primary, electrolytic capacitor C8, electricity
Solution capacitor C9 and inductance L5 is used to be filtered voltage conversion circuit secondary output；Capacitor C15, resistance R16, electricity
Resistance R35, diode D7 and diode D5 are used for the energy superfluous to voltage conversion circuit secondary output and absorb,
Prevent output electric current excessive, the electric appliance for causing LED to access is burnt out.
The utility model bring is the utility model has the advantages that the utility model provides a kind of waterproof for photovoltaic, light modulation is driven
Dynamic circuit, comprising: low-pass filter circuit, the protection circuit being electrically connected with the low-pass filter circuit and protection circuit electricity
The governor circuit of connection and the output circuit being electrically connected with the governor circuit, wherein the low-pass filter circuit includes the
One filter circuit and the bridge rectifier being electrically connected with the first filter circuit output end；The protection circuit includes
First protection circuit, and the first absorbing circuit being electrically connected with the first protection circuit output end；The governor circuit packet
Include main control chip circuit, the adjusting control circuit being electrically connected with the main control chip circuit and the electrical connection main control chip
The adjusting circuit of circuit；The second filter that the output circuit includes voltage conversion circuit, is electrically connected with the voltage conversion circuit
Wave circuit.The utility model can be realized in photovoltaic waterproof and light modulation driving, and the light modulation linearity is high, and entirely adjusts
Section process flicker free.
Detailed description of the invention
Fig. 1 is the circuit diagram of driving circuit provided by the embodiment of the utility model；
Fig. 2 is the structure chart of driving circuit provided by the embodiment of the utility model.
Wherein, 10, low-pass filter circuit, the 101, first filter circuit, 102, bridge rectifier, 11, protection circuit,
110, the first protection circuit, the 111, second protection circuit, 12, governor circuit, 120, main control chip circuit, 121, brightness adjustment control electricity
Road, 122, adjusting circuit, 1201, start-up circuit, 1202, ON-OFF control circuit, 1211, dimming input circuit, 1212, light modulation confession
Circuit, the 1221, first adjusting circuit, the 1222, second adjusting circuit, 13, output circuit, 130, voltage conversion circuit, 131,
Second filter circuit, 1310, filtering sub-circuit, the 1311, second absorbing circuit.
Specific embodiment
Preferred embodiments of the present invention are described below, those of ordinary skill in the art will be according to described below
It is realized with the relevant technologies of this field, and can be more clearly understood that the innovation and bring benefit of the utility model.
As shown in Figure 1, providing a kind of waterproof for photovoltaic, dimming driving circuit schematic diagram, comprising: low pass filtered
Wave circuit 10, the protection circuit 11 being electrically connected with the low-pass filter circuit 10, the master control being electrically connected with the protection circuit 11
Circuit 12 and the output circuit 13 being electrically connected with the governor circuit 12, wherein
The low-pass filter circuit 10 include the first filter circuit 101 and with 101 output end of the first filter circuit
The bridge rectifier 102 of electrical connection；
The protection circuit 11 includes the first protection circuit 110, and is electrically connected with the first protection 110 output end of circuit
The first absorbing circuit 111 connect；
The light modulation control that the governor circuit 12 includes main control chip circuit 120, is electrically connected with the main control chip circuit 120
The adjusting circuit 122 of circuit 121 processed and the electrical connection main control chip circuit 120；
The second filter that the output circuit 13 includes voltage conversion circuit 130, is electrically connected with the voltage conversion circuit 130
Wave circuit 131.
Specifically, two output ends of the first filter circuit 101 are electrically connected respectively to 2 and 3 ends of bridge rectifier 102
Mouthful, it then is electrically connected to the first protection circuit 110 from 102 port 2 (anode) of bridge rectifier, the first protection circuit 110 is defeated
Outlet returns the circuit that 102 port 4 (cathode) of bridge rectifier forms the first protection circuit 110；Adjusting control circuit 121
For providing dim signal, and exchange optical signal be converted into main control chip U1 can received signal, be turn, electrically connected to lead
Control chip circuit 120, wherein dim signal can be voltage signal, be also possible to pulse signal；Circuit is adjusted to be used for master control
The signal that chip circuit 120 exports carries out rectification and voltage division, wherein signal can be current signal, voltage signal etc.；Voltage conversion
130 primary port 2 of circuit is used to for signal being transported to governor circuit 12, while second filtering of the electrical connection of voltage conversion circuit 130
Circuit 131 prevents the wave except required frequency from being interfered for carrying out filtering clutter to output signal.
As shown in Fig. 2, a kind of waterproof for photovoltaic, dimming driving circuit structure chart are provided, it is practical new at this
In type embodiment, first filter circuit 101 includes voltage input end, inductance L3, inductance L4, inductance L1, inductance L2, resistance
R37, resistance R24, capacitor CX1, resistance R1, R2, varistor VR1 and fuse F1, wherein the fuse F1 with it is described
Voltage input end anode L is electrically connected and connects with the varistor VR1, and the varistor VR1 is electrically connected the inductance L3
Two input ports of one end and the cathode N of the connection voltage input end, voltage input end are used to provide external electrical for circuit
Source.The both ends the capacitor CX1 are electrically connected two output ends of inductance L3, the inductance L1 with resistance R24 parallel connection and be electrically connected described in
The input terminal of inductance L3 output end and inductance L4, the inductance L2 is in parallel with resistance R37 and to be electrically connected the inductance L3 another defeated
Another input terminal of outlet and inductance L4, resistance R1, R2 series connection, the inductance L4 output end are electrically connected the bridge rectifier electricity
Road.
Specifically, electric main (100-277Vac) passes through fuse F1, varistor VR1, inductance L3, capacitor CX1, electricity
Feel L1, inductance L2, resistance R37, resistance R24, resistance R1, R2, inductance L4 and carry out rectifying and wave-filtering, wherein capacitor CX1 is after powered up
Meeting fast charging and discharging generates surge current, and varistor VR1 damping can prevent the current spike of the surge current from causing electric current
Concussion, while as overvoltage protection, prevent voltage excessive, resistance R37, resistance R24 are respectively that inductance L2 and inductance L1 eliminates shake
It swings；Resistance R1, R2 are also possible to for circuit for eliminating concussion.Wherein, inductance L3, inductance L4, inductance L1, inductance L2 are used for specific
Frequency other than the frequency point of frequency or the frequency point is effectively filtered out, and pure direct current is provided for circuit, obtain one it is specific
Frequency eliminates a specific frequency, and capacitor CX1 filters out High-frequency Interference clutter composition, subtract for allowing low-frequency current to pass through
The small interference to circuit, fuse F1 are used for when input current is excessive while when the temperature is excessively high, itself fusing cutting electric current, protection
Circuit safety operation.
In the utility model embodiment, the first protection circuit 110 includes diode D9, electrolytic capacitor C13 and electricity
Solve capacitor C13 parallel connection positive and cathode the capacitor C2 of resistance R28, the electrical connection bridge rectifier 102 and with it is described
The capacitor C14 of capacitor C2 parallel connection, wherein diode D9 input terminal is electrically connected with 102 anode of bridge rectifier, and diode
D9 is electrically connected to the cathode of the bridge rectifier 102 after connecting with electrolytic capacitor C13.
Specifically, diode D9, electrolytic capacitor C13, the resistance R28 in parallel with electrolytic capacitor C13 are for protecting circuit to transport
Row, prevents from being struck by lightning, and diode D9 is also used to one-way conduction, rectifies to circuit, and electrolytic capacitor C13 is used for according to its charge and discharge
Characteristic, the pulsating dc voltage after making rectification become relatively steady dc voltage, and resistance R28 is used to be electrolytic capacitor
C13 lets out electricity, buffer function is played to electrolytic capacitor C13 charge/discharge speed, after wherein diode D9 connects with electrolytic capacitor C13
It is electrically connected to the cathode of bridge rectifier 102, forms a closed circuit.
More specifically, capacitor C2 meeting is parallel in 102 port 1 (anode) of bridge rectifier and the first protection circuit 110
With capacitor C14, while capacitor C2 and capacitor C14 is in parallel, as the filter capacitor of circuit, in 102 port 1 of bridge rectifier
(anode) also one detection firing current unit of series connection, detection firing current unit include voltage input end VIN and successively go here and there
Resistance R5, resistance R21, the resistance R22 of connection, wherein resistance R5, resistance R21, resistance R22 for detecting whether there is firing current,
It connects simultaneously multiple for dividing.
In the utility model embodiment, first absorbing circuit 111 includes: resistance R19, resistance R9, capacitor C3, electricity
Hinder R20 and diode D3, wherein after resistance R19, resistance R9 and capacitor C3 three are in parallel again with resistance R20 and two poles
Pipe D3 is sequentially connected in series, and the input terminal of diode D3 is electrically connected to the primary port of the voltage conversion circuit 130 again.
Specifically, wherein after resistance R19, resistance R9 and capacitor C3 three are in parallel again with resistance R20 and diode D3
It is sequentially connected in series, for absorbing, the voltage conversion circuit 130 is primary not to be transformed into secondary energy, voltage conversion electricity completely
Road 130 can be transformer, change alternating voltage by the principle of electromagnetic induction, can be used for voltage transformation, current transformation,
It can be used for that impedance transformation, isolation, pressure stabilizing can not convert completely when carrying out voltage conversion, can generate itself
The energy consumption of energy consumption and other elements；It is rectified simultaneously using diode D3, keeps bridge rectifier 102 positive
The electric current of outflow is transmitted directly to 130 primary of voltage conversion circuit, and capacitor C3 is also used to storage energy.
In the utility model embodiment, the main control chip circuit 120 includes main control chip U1, for the master control
The start-up circuit 1201 and ON-OFF control circuit 1202 that chip U1 charges, wherein
The main control chip U1 model SY5882；
The start-up circuit 1201 includes resistance R4, electrolytic capacitor C7, capacitor C6, zener diode ZD1, resistance R29,
In, electrolytic capacitor C7 connects with zener diode ZD1 after being connected in parallel with capacitor C6 and is output to the one end resistance R29, and resistance
The R29 other end is electrically connected with the pin VIN of the main control chip U1, while being also electrically connected with voltage input end in the one end resistance R4
Mouth VIN.
Specifically, main control chip U1 model SY5882, for providing constant current illumination for circuit, linearity light adjusting without stroboscopic,
It allows loop current to reach controllable and maintains electric current, keep constant current, main control chip U1 shares 8 pins, exports one by pin DRV
Pulse signal to metal-oxide-semiconductor (Metal-Oxide-SemiconductorField-Effect Transistor, MOSFET) Q1,
On-off of the metal-oxide-semiconductor Q1 as an ON-OFF control circuit 1202；Resistance R4 is used for detection circuit electric current, and electrolytic capacitor C7 can be carried out
Charge and discharge carry out storage energy, provide a cut-in voltage for main control chip U1, pass through start-up resistor when reaching starting voltage
R29 gives main control chip U1 pin mono- enabling signal of VIN；Zener diode ZD1 is for stablizing cut-in voltage, and U1 pairs of main control chip
By pin ADIM, the pulse width modulation to dim signal is by pin PWM, pin GND for the voltage adjustment of dim signal
Total external ground connection of baseline pin electrical connection, pin ISEN are used for the current detecting of circuit inside main control chip U1, and pin ZCS is used for
Zero passage detection lowers loss.
In the utility model embodiment, the ON-OFF control circuit 1202 include metal-oxide-semiconductor Q1, capacitor C10, resistance R18,
Resistance R12, resistance R13, resistance R14 and resistance R8, wherein after resistance R18, resistance R12, resistance R13, resistance R14 are in parallel
One end is electrically connected the source S of metal-oxide-semiconductor Q1, and the other end is electrically connected adjusting control circuit 121；Capacitor C10 is connected in parallel on the leakage of metal-oxide-semiconductor Q1
Between pole D and source level S, and the source level S is directly electrically connected to the port pin ISEN of main control chip U1.
Specifically, metal-oxide-semiconductor Q1 is used for the on-off of control circuit, can be as Switching Power Supply, wherein the source level of metal-oxide-semiconductor Q1
S ground connection, grid G input drive pulse signal, and drain D connects 130 primary port 4 of voltage conversion circuit, when V is greater than certain value
Metal-oxide-semiconductor Q1 will be connected, and be used for the case where when source S is grounded (low side driving), can use logical according to controlling the case where voltage at any time
It is disconnected.Capacitor C10 is used for when metal-oxide-semiconductor Q1 is disconnected, by the primary energy transmission not converted of the voltage conversion circuit 130 to institute
It states main control chip U1 pin ISEN and carries out current detecting；Resistance R18, resistance R12, resistance R13, resistance R14 are for examining stream, resistance
R8 discharges as discharge resistance for metal-oxide-semiconductor Q1.
In the utility model embodiment, the adjusting circuit 122 includes that the first adjusting circuit 1221 and second are adjusted
Circuit 1222, described first, which adjusts circuit 1221, includes capacitor C12, zener diode ZD2, capacitor C12 and zener diode ZD2
The input terminal of electrolytic capacitor C7 is connected to after being sequentially connected in series, capacitor C12 input terminal is connect with the pin ADIM of main control chip U1, is used
Voltage adjustment when dim signal transmission；The second adjusting circuit 1222 include the resistance R3, the resistance R11 that are sequentially connected in series and
Resistance R10, and it is connected in parallel on the diode D8 at the both ends resistance R10, resistance R3 input terminal is connect with main control chip U1 pin DRV,
The one end resistance R10 is connect with metal-oxide-semiconductor Q1 grid.
Specifically, zener diode ZD2 is for stablizing the dimmer voltage exported from main control chip U1 pin ADIM；Successively go here and there
Resistance R3, the resistance R11 of connection are used to limit the pulse current of main control chip U1 pin DRV output, and resistance R10 and diode D8 are simultaneously
It is combined in adjusting drive pulse signal, and diode D8 is used for pressure stabilizing, protects to metal-oxide-semiconductor Q1, so that when reverse breakdown
Increased electric current flows through diode D8 and is not passed through metal-oxide-semiconductor Q1.
In the utility model embodiment, the adjusting control circuit 121 includes dimming input circuit 1211 and light modulation
Power supply circuit 1212, wherein the dimming input circuit 1211 includes dim signal input and output end, capacitor C4, capacitor
C11, resistance R7 and dim signal conversion chip, wherein the dim signal conversion chip model DIM-BOARD, it is described
Dim signal input terminal is electrically connected the dim signal conversion chip pin 7, and the dim signal output end is electrically connected the tune
Optical signal conversion chip pin 4, and the dim signal conversion chip pin 4,5 and 6 is in parallel even, capacitor C4 and resistance R7 and
One end is electrically connected with main control chip UI pin COMP after C11 is in parallel, 2 electricity of the other end and the dim signal conversion chip pin
Connection, the resistance R7 connect with C11.Wherein, capacitor C4 formation external compensation circuit in parallel with resistance R7 and C11, to loop
Compensate the pin COMP for being then attached to main control chip U1 for external compensation circuit；Conversion chip is dimmed to be used for input
Dim signal be converted to the main control chip U1 being capable of received signal.In such manner, it is possible to be dim signal circuit with stable
Power supply, while can also be in compensation circuit because of voltage drop caused by resistance.
In the utility model embodiment, the light modulation power supply circuit 1212 includes resistance R26, diode D4, resistance R30
And capacitor C1, and before resistance R26 input terminal connect a Zero Current Switch ZCS, wherein resistance R26, diode D4,
Resistance R30 is sequentially connected in series, and the one end resistance R26 is electrically connected to the primary port of the voltage conversion circuit 130, resistance
The one end R30 is electrically connected to the pin 1 of dim signal conversion chip, and capacitor C1 is grounded after connecting with diode D4 output end.
Specifically, wherein R26 is inspection leakage resistance, electric current for being flowed through to 130 primary of voltage conversion circuit into
Row, diode D4 are used for circuit one-way conduction, and are rectified, resistance R26, diode D4, resistance R30 be sequentially connected in series after to institute
It states the electric current that 130 primary of voltage conversion circuit flows through to be integrated, then is electrically connected to the dim signal conversion chip pin 1,
It powers for the dim signal conversion chip；The Zero Current Switch ZCS includes switch input terminal mouth, and be connected in parallel
Capacitor C5 and resistance R32, the electric current that switch ZCS is flowed through when turning on and off for switch ZCS is equal to zero, to reduce switch
ZCS loss, to improve switch ZCS frequency, helps to improve the power density of power supply.In this way, can be preferably light modulation power supply
Circuit 1212 is powered.
In the utility model embodiment, second filter circuit includes connecting with the voltage conversion circuit 130
Filter sub-circuit 1310 and the second absorbing circuit 1311；
Wherein, the filtering sub-circuit 1310 include: capacitor CY1, capacitor CY2, electrolytic capacitor C8, electrolytic capacitor C9, with
And inductance L5, capacitor CY1 and CY2 are respectively electrically connected to the primary of the voltage conversion circuit 130 and the input of the inductance L5
Between end, and a voltage input port is connected in the one end capacitor CY1, the other end and 130 primary port of voltage conversion circuit connect
It connects, is connected to dim signal conversion chip pin 4, the electrolytic capacitor two after the voltage input port connection electrolytic capacitor C9
End is connect with inductance L5 input terminal；
Second absorbing circuit 1311 includes capacitor C15, resistance R16, resistance R35, diode D7 and diode
D5, wherein connect after resistance R16 is in parallel with resistance R35 with capacitor C15, then with diode D7 in parallel and diode
D5 is in parallel again, and corresponding common input end is connected to 130 secondary ports common output end of voltage conversion circuit and is connected to inductance
L5 input terminal.
Specifically, wherein capacitor CY1, capacitor CY2 are used for the primary progress rectifying and wave-filtering of the voltage conversion circuit 130
It afterwards and is directly electrically connected to two input terminals of inductance L5 rectification is filtered to output signal, LED is then given to provide output electricity
Source, electrolytic capacitor C8, electrolytic capacitor C9, for being filtered to the voltage conversion circuit secondary output signal；Capacitor C15,
Resistance R16, resistance R35, diode D7 and diode D5 are used for superfluous to 130 grade output of the voltage conversion circuit
Energy is absorbed, and prevents output electric current excessive, and the electric appliance for causing LED to access is burnt out, and is played a protective role to output circuit.
In addition, the driving chip of the LED drive circuit is many kinds of, several moneys more commonly used at present have: IC-
AMC7150, the market price is cheap, and can choose it in design parameter low pressure 4-25V product of less demanding, basic to drive
Kinetic force is in 3W or less using design；SB42511 is the trendy IC that current Silan's semiconductor is released, and is suitble to design 1-6 LED
Lamp inputs 6-25V input voltage, SOP8 packing forms；CAT4201, this IC drive 1-7 1LED lamp, and drive efficiency is reachable
The driving application design of 92%, 6-28V input voltage range voltage-dropping type, advantage more maximum than two IC of front are that encapsulation SOT23 is big
Small, route brief introduction meets most small size Lamp cup design requirements at present；ZXLD1350, the IC existing market of this type
Reaction is good and the encapsulation of SOT23 small size, input 7-30V voltage step-down constant current drive 1-7pscLED lamp, and simple in circuits is real
With.In the present invention, the chip model of use is SY5882, is that the suitable photovoltaic selected according to specific needs is prevented
The chip of water, the driving circuit that discharges.
It should be noted that it should be noted that, in this document, the terms "include", "comprise" or its any other change
Body is intended to non-exclusive inclusion, so that the process, article or the device that include a series of elements not only include that
A little elements, but also including other elements that are not explicitly listed, or further include for this process, article or device institute
Intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that wrapping
Include in process, method, article or the device of the element that there is also other identical elements.Meanwhile in the present invention, circuit elements
The connection of part is electrical connection, and L1, L2, L3 ... Ln, R1, R2, R3, R4 ... the Rn, C1- being used in the present invention
Cn, CY1-Cyn, D1-Dn etc. similar symbol is not only it is merely meant that a kind of expression symbol, plays restriction effect, wherein n
Indicate positive integer.
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 waterproof for photovoltaic, dimming driving circuit characterized by comprising low-pass filter circuit, with it is described
The protection circuit of low-pass filter circuit electrical connection, with it is described protect the governor circuit that is electrically connected of circuit and with the master control it is electric
The output circuit of road electrical connection, wherein
The low-pass filter circuit includes the first filter circuit and the bridge-type that is electrically connected with the first filter circuit output end
Rectification circuit；
The protection circuit includes the first protection circuit, and first be electrically connected with the first protection circuit output end absorbs
Circuit；
The governor circuit include main control chip circuit, the adjusting control circuit being electrically connected with the main control chip circuit and
It is electrically connected the adjusting circuit of the main control chip circuit；
The second filter circuit that the output circuit includes voltage conversion circuit, is electrically connected with the voltage conversion circuit.
2. the waterproof according to claim 1 for photovoltaic, dimming driving circuit, which is characterized in that described first
Filter circuit includes voltage input end, inductance L3, inductance L4, inductance L1, inductance L2, resistance R37, resistance R24, capacitor CX1, electricity
Hinder R1, R2, varistor VR1 and fuse F1, wherein the fuse F1 be electrically connected with the voltage input end anode and
It connects with the varistor VR1, the varistor VR1 is electrically connected two input ports of the one end the inductance L3 and connection
The cathode of the voltage input end, the both ends the capacitor CX1 are electrically connected two output ends of inductance L3, the inductance L1 and resistance
R24 is in parallel and is electrically connected the input terminal of the inductance L3 output end and inductance L4, and the inductance L2 is in parallel with resistance R37 and is electrically connected
Another input terminal of the inductance L3 another output end and inductance L4, resistance R1, R2 series connection are connect, the inductance L4 output end is electrically connected
Connect the bridge rectifier.
3. the waterproof according to claim 1 for photovoltaic, dimming driving circuit, which is characterized in that described first
Protection circuit include diode D9, electrolytic capacitor C13, with the resistance R28 of electrolytic capacitor C13 parallel connection, to be electrically connected the bridge-type whole
The capacitor C2 and the capacitor C14 in parallel with the capacitor C2 of current circuit anode and cathode, wherein diode D9 input terminal with
The electrical connection of bridge rectifier anode, and diode D9 connects with electrolytic capacitor C13 and is electrically connected to the bridge rectifier later
The cathode of circuit.
4. the waterproof according to claim 1 for photovoltaic, dimming driving circuit, which is characterized in that described first
Absorbing circuit includes: resistance R19, resistance R9, capacitor C3, resistance R20 and diode D3, wherein resistance R19, resistance R9 with
And be sequentially connected in series again with resistance R20 and diode D3 after capacitor C3 three's parallel connection, the input terminal of diode D3 is electrically connected again
It is connected to the primary port of the voltage conversion circuit.
5. the waterproof according to claim 1 for photovoltaic, dimming driving circuit, which is characterized in that the master control
Chip circuit includes main control chip U1, the start-up circuit for charging to the main control chip U1 and switch control electricity
Road；
The start-up circuit includes resistance R4, electrolytic capacitor C7, capacitor C6, zener diode ZD1, resistance R29, wherein electrolysis
Capacitor C7 connects with zener diode ZD1 after being connected in parallel with capacitor C6 and is output to the one end resistance R29, and resistance R29 is another
End is electrically connected with the pin VIN of the main control chip U1, while being also electrically connected with voltage input port VIN in the one end resistance R4.
6. the waterproof according to claim 5 for photovoltaic, dimming driving circuit, which is characterized in that the switch
Control circuit includes metal-oxide-semiconductor Q1, capacitor C10, resistance R18, resistance R12, resistance R13, resistance R14 and resistance R8, wherein
The source S of one end electrical connection metal-oxide-semiconductor Q1, other end electrical connection are adjusted after resistance R18, resistance R12, resistance R13, resistance R14 are in parallel
Light control circuit；Capacitor C10 is connected in parallel between the drain D of metal-oxide-semiconductor Q1 and source level S, and the source level S is directly electrically connected to master control
The port pin ISEN of chip U1.
7. the waterproof according to claim 6 for photovoltaic, dimming driving circuit, which is characterized in that the adjusting
Circuit includes the first adjusting circuit and second adjusts circuit, and the first adjusting circuit includes capacitor C12, zener diode
ZD2, capacitor C12 and zener diode ZD2 are connected to the input terminal of electrolytic capacitor C7 after being sequentially connected in series, capacitor C12 input terminal with
The pin ADIM connection of main control chip U1, voltage adjustment when for dim signal transmission；It is described second adjusting circuit include according to
Secondary concatenated resistance R3, resistance R11 and resistance R10, and it is connected in parallel on the diode D8 at the both ends resistance R10, resistance R3 input terminal
It is connect with main control chip U1 pin DRV, the one end resistance R10 is connect with metal-oxide-semiconductor Q1 grid.
8. the waterproof according to claim 1 for photovoltaic, dimming driving circuit, which is characterized in that the light modulation
Control circuit includes dimming input circuit and light modulation power supply circuit, wherein the dimming input circuit includes that dim signal is defeated
Enter and output end, capacitor C4, capacitor C11, resistance R7 and dim signal conversion chip, the dim signal input terminal are electric
The dim signal conversion chip pin 7 is connected, the dim signal output end is electrically connected the dim signal conversion chip and draws
Foot 4, and the dim signal conversion chip pin 4,5 and 6 is in parallel even, one end after capacitor C4 is in parallel with resistance R7 and C11
It is electrically connected with the UI pin COMP of main control chip U1, the other end is electrically connected with the dim signal conversion chip pin 2, the electricity
Resistance R7 connects with C11.
9. the waterproof according to claim 8 for photovoltaic, dimming driving circuit, which is characterized in that the light modulation
Power supply circuit includes resistance R26, diode D4, resistance R30 and capacitor C1, and is connected one before resistance R26 input terminal
Zero Current Switch ZCS, wherein resistance R26, diode D4, resistance R30 are sequentially connected in series, and the one end resistance R26 is electrically connected
To the primary port of the voltage conversion circuit, the one end resistance R30 is electrically connected to the pin 1 of dim signal conversion chip, capacitor
C1 is grounded after connecting with diode D4 output end.
10. the waterproof according to claim 8 for photovoltaic, dimming driving circuit, which is characterized in that described second
Filter circuit includes the filtering sub-circuit and the second absorbing circuit connecting with the voltage conversion circuit；
Wherein, the filtering sub-circuit includes: capacitor CY1, capacitor CY2, electrolytic capacitor C8, electrolytic capacitor C9 and inductance L5,
Capacitor CY1 and CY2 are respectively electrically connected between the input terminal of primary and described inductance L5 of the voltage conversion circuit, and in electricity
Hold the one end CY1 and connect a voltage input port, the other end is connect with voltage conversion circuit primary port, the voltage input end
Dim signal conversion chip pin 4, the electrolytic capacitor both ends and inductance L5 input terminal are connected to after mouth connection electrolytic capacitor C9
Connection；
Second absorbing circuit includes capacitor C15, resistance R16, resistance R35, diode D7 and diode D5, wherein electricity
It connects after resistance R16 is in parallel with resistance R35 with capacitor C15, it is then in parallel again with diode D7 and diode D5 in parallel,
Corresponding common input end is connected to voltage conversion circuit secondary ports common output end and is connected to inductance L5 input terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822041784.9U CN209593833U (en) | 2018-12-06 | 2018-12-06 | A kind of waterproof for photovoltaic, dimming driving circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822041784.9U CN209593833U (en) | 2018-12-06 | 2018-12-06 | A kind of waterproof for photovoltaic, dimming driving circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209593833U true CN209593833U (en) | 2019-11-05 |
Family
ID=68348292
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822041784.9U Active CN209593833U (en) | 2018-12-06 | 2018-12-06 | A kind of waterproof for photovoltaic, dimming driving circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209593833U (en) |
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2018
- 2018-12-06 CN CN201822041784.9U patent/CN209593833U/en active Active
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