CN207638950U - A kind of high power LED constant - Google Patents
A kind of high power LED constant Download PDFInfo
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- CN207638950U CN207638950U CN201721914268.1U CN201721914268U CN207638950U CN 207638950 U CN207638950 U CN 207638950U CN 201721914268 U CN201721914268 U CN 201721914268U CN 207638950 U CN207638950 U CN 207638950U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
Abstract
The utility model discloses a kind of high power LED constants, including rectification circuit, regulator circuit, overvoltage crowbar and the constant-current drive circuit for controlling chip and being connect respectively with control chip；The rectification circuit external power supply.The utility model has the beneficial effects that：The utility model can be eliminated or inhibited to the instant high-voltage of input voltage, and the utility model can improve the resistance to pressure of voltage, and the intermediate zero migration of electric current can be controlled, ensure that the utility model can export stable voltage and current, it effectively ensures the stability of LED light brightness, while extending the service life of LED light.
Description
Technical field
The utility model is related to LED technology fields, are a kind of high power LED constants specifically.
Background technology
With the gradually decline of the continuous development of LED manufacture technology and maturation and production cost, LED light source has been opened
Beginning is widely used in the fields such as auto lamp, special lighting lamps and lanterns, public illumination, has huge development potentiality, it is considered to be 21
Century light source most with prospects.According to the characteristic of LED, LED lamp is substantially at present is used as driving electricity using constant-current source
Source.Relative to other semiconductor luminaires, LED lamp tube belongs to middle low power lamps and lanterns, usually by more power LED series connection or simultaneously
Connection constitutes the light source of lamps and lanterns, and the constant current output power drives inputted by alternating current are mainly used for office, garage, subway and household
The various occasions such as illumination.The application characteristic of fluorescent tube requires its driving power to have higher power factor, high efficiency, highly reliable
Property, long-life, constant-current characteristics is good, while can accomplish low cost and convenient maintenance and replacement.
LED power used at present is asked due to by extraneous Electromagnetic Interference there are output voltage and electric current are unstable
Topic, causes the brightness of LED light unstable, to affect the service life of LED light.And power factor is relatively low；Complete machine power
Also not high, generally 83% hereinafter, the service life is usually no more than 2 years；Constant-current characteristics is general, when especially long under high temperature environment
Between operation output current range of decrease some reached 10mA.
Utility model content
The purpose of this utility model is to provide a kind of high power LED constants, avoid LED power because by outer
The Electromagnetic Interference on boundary and there are the unstable defects of output voltage and electric current.
The utility model is achieved through the following technical solutions：A kind of high power LED constant, including control chip
Rectification circuit, regulator circuit, overvoltage crowbar and the constant-current drive circuit being connect respectively with control chip；The rectification
Circuit external power supply.
The control chip uses NCP1653 chips.
The rectification circuit includes rectifier bridge U1, capacitance C1, capacitance C2, resistance R1, resistance R2, resistance R3 and diode
D1；
3 external power supply of pin 1 and pin of the rectifier bridge U1；
The pin 2 of one end connection rectifier bridge U1 of the capacitance C1, one end of the other end connection resistance R1 of capacitance C1,
The pin 4 of the other end connection rectifier bridge U1 of resistance R1；
The pin 2 of one end connection rectifier bridge U1 of the capacitance C2, one end of the other end connection resistance R2 of capacitance C2,
One end of the other end connection resistance R3 of resistance R2, the cathode of the other end connection diode D1 of resistance R3, diode D1 is just
Pole is connect with the pin 2 for meeting rectifier bridge U1.
The regulator circuit includes triode VT1, triode VT5, resistance R4, resistance R5, resistance R6, resistance R20, electricity
Hinder R21, inductance L1, capacitance C3, capacitance C6 and diode D9；
The pin 2 of the pin e and rectifier bridge U1 of the triode VT5 are connect, the pin b connection capacitances of triode VT5
One end of C3, one end of the other end connection resistance R4 of capacitance C3, the pin c of the other end connecting triode VT1 of resistance R4, three
The FB pins of the pin e connection NCP1653 chips of pole pipe VT1；
One end of the pin b connection resistance R21 of the triode VT1, the other end connection diode D9's of resistance R21
Anode, one end of the cathode connection resistance R20 of diode D9, the DRV pins of the other end connection NCP1653 chips of resistance R20；
One end of the capacitance C6 is connected on the circuit between resistance R21 and diode D9, the other end of capacitance C6
Connect one end of resistance R6, the pin c of the other end connecting triode VT5 of resistance R6；
One end of the resistance R5 is connected on the circuit between capacitance C3 and resistance R4, the other end connection of resistance R5
On circuit between capacitance C6 and resistance R6.
The overvoltage crowbar includes capacitance C8, capacitance C9, capacitance C12, resistance R14, resistance R 15, resistance R
16, resistance R 17, triode VT2, triode VT3, diode D2, diode D 3, diode D 4；
One end of the resistance R15 is connected on the circuit between resistance R2 and resistance R3, and the resistance R15's is another
One end connects one end of capacitance C12, and the pin e of the pin b of the other end connecting triode VT2 of capacitance C12, triode VT2 connect
One end of connecting resistance R14, one end of the other end connection capacitance C8 of resistance R14, the other end of capacitance C8 connect NCP1653 cores
The VON pins of piece, one end of the pin c connection resistance R17 of triode VT2, the one of the other end connection capacitance C9 of resistance R17
End, the other end ground connection of capacitance C9, the cathode ground connection of the pin c of the positive connecting triode VT2 of diode D3, diode D3；
The anode of the diode D2 is connected on the circuit between resistance R1 and capacitance C1, and the cathode of diode D2 connects
One end of connecting resistance R16, the pin c of the other end connecting triode VT3 of resistance R16, the positive connecting triode of diode D4
The CS pins of the cathode connection NCP1653 chips of the pin c of VT3, diode D4, one end connecting triode VT3's of resistance R18
The other end of pin c, resistance R18 are grounded；
The pin b of the triode VT3 is connected on the circuit between resistance R3 and resistance R15, and triode VT3's draws
One end of foot e connection inductance L2, the IN pins of the other end connection NCP1653 chips of inductance L2.
The constant-current drive circuit includes resistance R7, resistance R8, resistance R9, resistance R10, resistance R11, resistance R12, electricity
Hinder R13, resistance R19, capacitance C4, capacitance C5, capacitance C7, capacitance C10, capacitance C11, diode D5, diode D6, diode
D7, diode D8, diode D10, metal-oxide-semiconductor, triode VT4；
The free end of one end connection inductance L1 of the resistance R7, one end of the other end connection capacitance C7 of resistance R7,
One end of the other end connection resistance R8 of capacitance C7, the cathode of the other end connection diode D8 of resistance R8, diode D8 is just
The e pins of pole connecting triode VT4, the DRV pins of the b pins connection NCP1653 chips of triode VT4, the c of triode VT4
Pin connects one end of resistance R12, the cathode of the other end connection diode D10 of resistance R12, the anode connection of diode D10
The VM pins of NCP1653 chips, the VM pins of the other end connection NCP1653 chips of resistance R19, one end connection of resistance R19
One end of capacitance C10, the other end ground connection of capacitance C10；
The cathode of one end connection diode D10 of the capacitance C11, the one of the other end connection resistance R11 of capacitance C11
End, the anode of the other end connection diode D7 of resistance R11, the cathode ground connection of diode D7；
The e pins of one end connecting triode VT4 of the resistance R13, the other end ground connection of resistance R13；
The free end of the anode connection inductance L1 of the diode D5, the pin of the cathode connection metal-oxide-semiconductor of diode D5
The pin G of D, metal-oxide-semiconductor are connected on the circuit between resistance R7 and capacitance C7, one end of the pin S connection resistance R10 of metal-oxide-semiconductor,
The other end of resistance R10 is grounded；
One end of the resistance R9 is connect with the anode of diode D5, and the one of the other end connection capacitance C4 of resistance R9
End, the pin S of the other end connection metal-oxide-semiconductor of capacitance C4；
The anode of the diode D6 is connected on the circuit between resistance R9 and capacitance C4, and the cathode of diode D6 connects
Connect one end of capacitance C5, the other end ground connection of capacitance C5, by capacitance C5 electric discharge output voltages.
The utility model compared with prior art, has the following advantages and advantageous effect：
The utility model can be eliminated or inhibited to the instant high-voltage of input voltage, and the present invention can improve voltage
Resistance to pressure, and the intermediate zero migration of electric current can be controlled, ensure that the present invention can export the voltage of stabilization with
Electric current, effectively ensures the stability of LED light brightness, while extending the service life of LED light.Used NCP1653
Chip is combined with external circuit and effectively raises the stability of output voltage and electric current, ensures that the present invention can export
Stable voltage and current.
Description of the drawings
Fig. 1 is the circuit diagram of this programme.
Specific implementation mode
The utility model is described in further detail with reference to embodiment, but the embodiment of the utility model is not
It is limited to this.
Embodiment 1：
In the present embodiment, as shown in Figure 1, a kind of high power LED constant, including control chip and respectively with control
Rectification circuit, regulator circuit, overvoltage crowbar and the constant-current drive circuit of coremaking piece connection；The external electricity of the rectification circuit
Source.The control chip uses NCP1653 chips.
The rectification circuit includes rectifier bridge U1, capacitance C1, capacitance C2, resistance R1, resistance R2, resistance R3 and diode
D1；
3 external power supply of pin 1 and pin of the rectifier bridge U1；
The pin 2 of one end connection rectifier bridge U1 of the capacitance C1, one end of the other end connection resistance R1 of capacitance C1,
The pin 4 of the other end connection rectifier bridge U1 of resistance R1；
The pin 2 of one end connection rectifier bridge U1 of the capacitance C2, one end of the other end connection resistance R2 of capacitance C2,
One end of the other end connection resistance R3 of resistance R2, the cathode of the other end connection diode D1 of resistance R3, diode D1 is just
Pole is connect with the pin 2 for meeting rectifier bridge U1.
The regulator circuit includes triode VT1, triode VT5, resistance R4, resistance R5, resistance R6, resistance R20, electricity
Hinder R21, inductance L1, capacitance C3, capacitance C6 and diode D9；
The pin 2 of the pin e and rectifier bridge U1 of the triode VT5 are connect, the pin b connection capacitances of triode VT5
One end of C3, one end of the other end connection resistance R4 of capacitance C3, the pin c of the other end connecting triode VT1 of resistance R4, three
The FB pins of the pin e connection NCP1653 chips of pole pipe VT1；
One end of the pin b connection resistance R21 of the triode VT1, the other end connection diode D9's of resistance R21
Anode, one end of the cathode connection resistance R20 of diode D9, the DRV pins of the other end connection NCP1653 chips of resistance R20；
One end of the capacitance C6 is connected on the circuit between resistance R21 and diode D9, the other end of capacitance C6
Connect one end of resistance R6, the pin c of the other end connecting triode VT5 of resistance R6；
One end of the resistance R5 is connected on the circuit between capacitance C3 and resistance R4, the other end connection of resistance R5
On circuit between capacitance C6 and resistance R6.This programme can carry out the instant high-voltage of input voltage using regulator circuit
It eliminates or inhibits, to eliminate the influence caused by input voltage fluctuation, improve the resistance to pressure of this programme.
The overvoltage crowbar includes capacitance C8, capacitance C9, capacitance C12, resistance R14, resistance R 15, resistance R
16, resistance R 17, triode VT2, triode VT3, diode D2, diode D 3, diode D 4；
One end of the resistance R15 is connected on the circuit between resistance R2 and resistance R3, and the resistance R15's is another
One end connects one end of capacitance C12, and the pin e of the pin b of the other end connecting triode VT2 of capacitance C12, triode VT2 connect
One end of connecting resistance R14, one end of the other end connection capacitance C8 of resistance R14, the other end of capacitance C8 connect NCP1653 cores
The VON pins of piece, one end of the pin c connection resistance R17 of triode VT2, the one of the other end connection capacitance C9 of resistance R17
End, the other end ground connection of capacitance C9, the cathode ground connection of the pin c of the positive connecting triode VT2 of diode D3, diode D3；
The anode of the diode D2 is connected on the circuit between resistance R1 and capacitance C1, and the cathode of diode D2 connects
One end of connecting resistance R16, the pin c of the other end connecting triode VT3 of resistance R16, the positive connecting triode of diode D4
The CS pins of the cathode connection NCP1653 chips of the pin c of VT3, diode D4, one end connecting triode VT3's of resistance R18
The other end of pin c, resistance R18 are grounded；
The pin b of the triode VT3 is connected on the circuit between resistance R3 and resistance R15, and triode VT3's draws
One end of foot e connection inductance L2, the IN pins of the other end connection NCP1653 chips of inductance L2.Utilize overvoltage crowbar energy
It is enough to be limited in input voltage in required range, to avoid electric elements from being broken by excessively high voltage.
The constant-current drive circuit includes resistance R7, resistance R8, resistance R9, resistance R10, resistance R11, resistance R12, electricity
Hinder R13, resistance R19, capacitance C4, capacitance C5, capacitance C7, capacitance C10, capacitance C11, diode D5, diode D6, diode
D7, diode D8, diode D10, metal-oxide-semiconductor, triode VT4；
The free end of one end connection inductance L1 of the resistance R7, one end of the other end connection capacitance C7 of resistance R7,
One end of the other end connection resistance R8 of capacitance C7, the cathode of the other end connection diode D8 of resistance R8, diode D8 is just
The e pins of pole connecting triode VT4, the DRV pins of the b pins connection NCP1653 chips of triode VT4, the c of triode VT4
Pin connects one end of resistance R12, the cathode of the other end connection diode D10 of resistance R12, the anode connection of diode D10
The VM pins of NCP1653 chips, the VM pins of the other end connection NCP1653 chips of resistance R19, one end connection of resistance R19
One end of capacitance C10, the other end ground connection of capacitance C10；
The cathode of one end connection diode D10 of the capacitance C11, the one of the other end connection resistance R11 of capacitance C11
End, the anode of the other end connection diode D7 of resistance R11, the cathode ground connection of diode D7；
The e pins of one end connecting triode VT4 of the resistance R13, the other end ground connection of resistance R13；
The free end of the anode connection inductance L1 of the diode D5, the pin of the cathode connection metal-oxide-semiconductor of diode D5
The pin G of D, metal-oxide-semiconductor are connected on the circuit between resistance R7 and capacitance C7, one end of the pin S connection resistance R10 of metal-oxide-semiconductor,
The other end of resistance R10 is grounded；
One end of the resistance R9 is connect with the anode of diode D5, and the one of the other end connection capacitance C4 of resistance R9
End, the pin S of the other end connection metal-oxide-semiconductor of capacitance C4；
The anode of the diode D6 is connected on the circuit between resistance R9 and capacitance C4, and the cathode of diode D6 connects
Connect one end of capacitance C5, the other end ground connection of capacitance C5, by capacitance C5 electric discharge output voltages.Can be using constant-current drive circuit
The stable voltage of LED light output, avoids transformation from fluctuating and cause harmful effect to the use and service life of LED light.
The above is only the preferred embodiment of the utility model, not does limit in any form to the utility model
System, any simple modification made by the above technical examples according to the technical essence of the present invention, equivalent variations, each falls within
Within the scope of protection of the utility model.
Claims (6)
1. a kind of high power LED constant, it is characterised in that：Including control chip and respectively with control chip and connect
Rectification circuit, regulator circuit, overvoltage crowbar and constant-current drive circuit；The rectification circuit external power supply.
2. a kind of high power LED constant according to claim 1, it is characterised in that：The control chip
Using NCP1653 chips.
3. a kind of high power LED constant according to claim 2, it is characterised in that：The rectification circuit
Including rectifier bridge U1, capacitance C1, capacitance C2, resistance R1, resistance R2, resistance R3 and diode D1；
3 external power supply of pin 1 and pin of the rectifier bridge U1；
The pin 2 of one end connection rectifier bridge U1 of the capacitance C1, one end of the other end connection resistance R1 of capacitance C1, resistance
The pin 4 of the other end connection rectifier bridge U1 of R1；
The pin 2 of one end connection rectifier bridge U1 of the capacitance C2, one end of the other end connection resistance R2 of capacitance C2, resistance
One end of the other end connection resistance R3 of R2, the cathode of the other end connection diode D1 of resistance R3, the anode of diode D1 with
The pin 2 for meeting rectifier bridge U1 connects.
4. a kind of high power LED constant according to claim 2, it is characterised in that：The regulator circuit
Including triode VT1, triode VT5, resistance R4, resistance R5, resistance R6, resistance R20, resistance R21, inductance L1, capacitance C3, electricity
Hold C6 and diode D9；
The pin 2 of the pin e and rectifier bridge U1 of the triode VT5 are connect, the pin b connection capacitances C3's of triode VT5
One end, one end of the other end connection resistance R4 of capacitance C3, the pin c of the other end connecting triode VT1 of resistance R4, triode
The FB pins of the pin e connection NCP1653 chips of VT1；
One end of the pin b connection resistance R21 of the triode VT1, the other end connection diode D9 of resistance R21 is just
Pole, one end of the cathode connection resistance R20 of diode D9, the DRV pins of the other end connection NCP1653 chips of resistance R20；
One end of the capacitance C6 is connected on the circuit between resistance R21 and diode D9, the other end connection of capacitance C6
One end of resistance R6, the pin c of the other end connecting triode VT5 of resistance R6；
One end of the resistance R5 is connected on the circuit between capacitance C3 and resistance R4, and the other end of resistance R5 is connected to electricity
Hold on the circuit between C6 and resistance R6.
5. a kind of high power LED constant according to claim 1, it is characterised in that：The overvoltage protection
Circuit includes capacitance C8, capacitance C9, capacitance C12, resistance R14, resistance R 15, resistance R 16, resistance R 17, triode VT2, three
Pole pipe VT3, diode D2, diode D 3, diode D 4；
One end of the resistance R15 is connected on the circuit between resistance R2 and resistance R3, the other end of the resistance R15
Connect one end of capacitance C12, the pin e connection electricity of the pin b of the other end connecting triode VT2 of capacitance C12, triode VT2
One end of R14, one end of the other end connection capacitance C8 of resistance R14 are hindered, the other end of capacitance C8 connects NCP1653 chips
VON pins, one end of the pin c connection resistance R17 of triode VT2, one end of the other end connection capacitance C9 of resistance R17, electricity
Hold the other end ground connection of C9, the cathode ground connection of the pin c of the positive connecting triode VT2 of diode D3, diode D3；
The anode of the diode D2 is connected on the circuit between resistance R1 and capacitance C1, the cathode connection electricity of diode D2
One end of R16 is hindered, the positive connecting triode VT3's of the pin c of the other end connecting triode VT3 of resistance R16, diode D4
The CS pins of the cathode connection NCP1653 chips of pin c, diode D4, the pin of one end connecting triode VT3 of resistance R18
The other end of c, resistance R18 are grounded；
The pin b of the triode VT3 is connected on the circuit between resistance R3 and resistance R15, the pin e of triode VT3
Connect one end of inductance L2, the IN pins of the other end connection NCP1653 chips of inductance L2.
6. a kind of high power LED constant according to claim 1, it is characterised in that：The constant current driving
Circuit include resistance R7, resistance R8, resistance R9, resistance R10, resistance R11, resistance R12, resistance R13, resistance R19, capacitance C4,
Capacitance C5, capacitance C7, capacitance C10, capacitance C11, diode D5, diode D6, diode D7, diode D8, diode D10,
Metal-oxide-semiconductor, triode VT4；
The free end of one end connection inductance L1 of the resistance R7, one end of the other end connection capacitance C7 of resistance R7, capacitance
One end of the other end connection resistance R8 of C7, the cathode of the other end connection diode D8 of resistance R8, the anode of diode D8 is even
Connect the e pins of triode VT4, the DRV pins of the b pins connection NCP1653 chips of triode VT4, the c pins of triode VT4
Connect one end of resistance R12, the cathode of the other end connection diode D10 of resistance R12, the anode connection of diode D10
The VM pins of NCP1653 chips, the VM pins of the other end connection NCP1653 chips of resistance R19, one end connection of resistance R19
One end of capacitance C10, the other end ground connection of capacitance C10；
The cathode of one end connection diode D10 of the capacitance C11, one end of the other end connection resistance R11 of capacitance C11,
The anode of the other end connection diode D7 of resistance R11, the cathode ground connection of diode D7；
The e pins of one end connecting triode VT4 of the resistance R13, the other end ground connection of resistance R13；
The free end of the anode connection inductance L1 of the diode D5, the pin D, MOS of the cathode connection metal-oxide-semiconductor of diode D5
The pin G of pipe is connected on the circuit between resistance R7 and capacitance C7, one end of the pin S connection resistance R10 of metal-oxide-semiconductor, resistance
The other end of R10 is grounded；
One end of the resistance R9 is connect with the anode of diode D5, one end of the other end connection capacitance C4 of resistance R9, electricity
Hold the pin S of the other end connection metal-oxide-semiconductor of C4；
The anode of the diode D6 is connected on the circuit between resistance R9 and capacitance C4, the cathode connection electricity of diode D6
Hold one end of C5, the other end ground connection of capacitance C5, by capacitance C5 electric discharge output voltages.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721914268.1U CN207638950U (en) | 2017-12-31 | 2017-12-31 | A kind of high power LED constant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721914268.1U CN207638950U (en) | 2017-12-31 | 2017-12-31 | A kind of high power LED constant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207638950U true CN207638950U (en) | 2018-07-20 |
Family
ID=62851456
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721914268.1U Active CN207638950U (en) | 2017-12-31 | 2017-12-31 | A kind of high power LED constant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207638950U (en) |
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2017
- 2017-12-31 CN CN201721914268.1U patent/CN207638950U/en active Active
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Address after: 510000 Room 601, No. 18, Tianhui Road, Tianhe District, Guangzhou City, Guangdong Province Patentee after: Guangzhou night sky rainbow Culture Technology Co.,Ltd. Address before: 510999 3rd floor, No.1 Tianbian village, North Road, JIEKOU Town, Conghua, Guangzhou, Guangdong (self made room C341) Patentee before: GUANGZHOU NIGHT RAINBOW ADVERTISING Co.,Ltd. |
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