CN207820269U - A kind of LED control devices and its surge protection circuit - Google Patents
A kind of LED control devices and its surge protection circuit Download PDFInfo
- Publication number
- CN207820269U CN207820269U CN201721495348.8U CN201721495348U CN207820269U CN 207820269 U CN207820269 U CN 207820269U CN 201721495348 U CN201721495348 U CN 201721495348U CN 207820269 U CN207820269 U CN 207820269U
- Authority
- CN
- China
- Prior art keywords
- capacitance
- voltage
- resistance
- diode
- common mode
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- 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]
Landscapes
- Emergency Protection Circuit Devices (AREA)
Abstract
The utility model discloses a kind of LED control devices and its surge protection circuit, the surge protection circuit includes the differential mode surge voltage absorption module that second voltage is exported for absorbing differential mode surge voltage, and after being filtered to the first voltage of electric main input；The common mode surge voltage absorption module of tertiary voltage is exported for absorbing common mode surge voltage, and after being filtered to second voltage；Filter rectification module for the 4th voltage of output after tertiary voltage is carried out rectification and is filtered；For exporting the flyback module powered to LED light after the 4th voltage is converted to the 5th voltage；The differential mode surge voltage absorption module, common mode surge voltage absorption module, filter rectification module and flyback module are sequentially connected.The utility model has achieved the purpose that absorb common mode surge voltage while absorbing differential mode surge voltage, has ensured that the component in circuit is not influenced by surge impact by the way that common mode surge voltage absorption module is arranged.
Description
Technical field
The utility model is related to LED technology field, more particularly to a kind of LED control devices and its surge protection circuit.
Background technology
Lightning stroke is a kind of common natural phenomena, and it is a kind of transient wave that lightning stroke, which is formed by surge impact, is a kind of transition
It can also be surge current that interference, which can be surge voltage,.Along power cord or other paths (conduction thunder) or pass through electromagnetic field
(inductive lightning) and be sent to power circuit.Its wave character is then first rapid increase slowly declines.This phenomenon can be to power supply
Fatal influence is generated, since the surge impact of its moment generated is far beyond the electrical stress of general electronic device, is caused
Direct result be electronic component damage.
LED lamps and lanterns have the features such as efficient, reliable, low power consuming, there is very extensive purposes, are commonly used to illuminate, show
Show, signal lamp etc..But due to the complexity of LED use environments, especially when LED light is used in open air, driving circuit
It is very easy to cause failure or damage by the impact of overvoltage and overcurrent, causes unnecessary loss of property even
Casualties, therefore have to fully consider and carry out safeguard measure when designing LED driving circuits, to improve circuit
Reliability reduces rate of breakdown.
Currently, common safeguard measure is by increasing a varistor in power port（MOV）Come in absorbing circuit
Surge current, as shown in Figure 1, it is surge protection circuit of current conventional use of LED control devices, shown in Fig. 1
Varistor MOV1 is exactly conventional surging prevention device, the minimum standard that conventional LED drive power must satisfy：It can bear
The surge impact of 2kV (i.e. the standard of differential mode 1KV, common mode 2KV) is tested between 1kV, line and ground between line and line.It is shown in FIG. 1 pressure-sensitive
Resistance MOV energy transient absorption differential mode surge voltages, i.e., can play a protective role between line in the surge impact of 1kV, still online
Varistor MOV is unable to transient absorption common mode surge voltage.And the substantial portion of energy of common mode surge can be gathered in common mode electricity
Sense（Common mode inductance L i.e. shown in FIG. 1）On, if the energy of common mode inductance L cannot be timely released or absorb, will be transmitted to
The components such as the control IC of rear class LED power and metal-oxide-semiconductor get on, and control IC and metal-oxide-semiconductor and be comparatively subject to electrical stress
Poor component, and the moment surge impact that common mode surge generates is far beyond the electrical stress model that they can bear
It encloses, may result in them in this way and damage, so just often there is the phenomenon that product damages in surge impact experiment.
Thus the prior art could be improved and improve.
Utility model content
Place in view of above-mentioned deficiencies of the prior art, the purpose of this utility model is to provide a kind of LED control devices and
Its surge protection circuit can absorb differential mode surge voltage and common mode surge voltage simultaneously, protect the component in circuit not by wave
Gush the influence of impact.
In order to achieve the above object, the utility model takes following technical scheme：
A kind of surge protection circuit of LED control devices, including：
For absorbing differential mode surge voltage, and second voltage is exported after being filtered to the first voltage of electric main input
Differential mode surge voltage absorption module；
The common mode surge voltage of tertiary voltage is exported for absorbing common mode surge voltage, and after being filtered to second voltage
Absorption module；
Filter rectification module for the 4th voltage of output after tertiary voltage is carried out rectification and is filtered；
For exporting the flyback module powered to LED light after the 4th voltage is converted to the 5th voltage；
The differential mode surge voltage absorption module, common mode surge voltage absorption module, filter rectification module and flyback module
It is sequentially connected.
In the surge protection circuit of the LED control devices, the differential mode surge voltage absorption module include fuse,
First varistor and the first capacitance, the firewire of one end connection electric main of the fuse, the other end of the fuse
Connect one end of the first varistor, one end of the first capacitance and common mode surge voltage absorption module, first varistor
The other end connection zero curve of electric main, the first capacitance the other end and common mode surge voltage absorption module.
In the surge protection circuit of the LED control devices, the common mode surge voltage absorption module includes common mode electricity
Sense, the first diode, the second diode and the second varistor, the other end of the 1st foot connection fuse of the common mode inductance,
The crus secunda of the common mode inductance connects filter rectification module, and the 3rd foot of the common mode inductance connects the another of the first varistor
The anode of one end and the first diode, the cathode of first diode connect the cathode of the second diode, the two or two pole
Pipe anode connection the second varistor one end, second varistor the other end connection common mode inductance the 4th foot and
Filter rectification module.
In the surge protection circuit of the LED control devices, the filter rectification module includes the second capacitance, third electricity
Appearance, the 4th capacitance, the first inductance, first resistor and rectifier bridge, second capacitance one end connection common mode inductance the 2nd foot and
The other end of 1st foot of rectifier bridge, second capacitance connects one end of the first inductance, one end of first resistor and the 4th capacitance
One end, the 4th capacitance the other end connection electric main ground wire, first inductance the other end connection first electricity
The other end of resistance and the 2nd foot of rectifier bridge, one end of the 3rd foot connection third capacitance of the rectifier bridge and flyback module, it is described
The other end and the first ground of the 4th foot connection third capacitance of rectifier bridge.
In the surge protection circuit of the LED control devices, the flyback module include control chip, the 5th capacitance,
6th capacitance, the 7th capacitance, the 8th capacitance, the 9th capacitance, the tenth capacitance, the 11st capacitance, second resistance, 3rd resistor,
Four resistance, the 5th resistance, the 6th resistance, the 7th resistance, the 8th resistance, the 9th resistance, the tenth resistance, eleventh resistor, third
Diode, the 4th diode, the 5th diode, metal-oxide-semiconductor and transformer, the one of the 1st foot connection second resistance of the transformer
End, the 5th capacitance one end and the 3rd foot of rectifier bridge, also pass sequentially through the 4th resistance and the 5th resistance connects the 8th capacitance
The VIN feet of one end, one end of the 9th capacitance, one end of 3rd resistor, one end of the 8th resistance and control chip, the transformer
The 2nd foot connection third diode anode and metal-oxide-semiconductor drain electrode, the third diode cathode connection second resistance it is another
3rd foot of the other end of one end and the 5th capacitance, the transformer connects the anode of the 4th diode, also passes sequentially through the 12nd
Resistance connects the TCS feet of one end of the 11st capacitance, one end of the 7th resistance and control chip, the transformation with thirteenth resistor
4th foot of device connects one end and the second ground of the 7th capacitance, and the other end of the 7th capacitance connects one end of the 6th capacitance, becomes
The cathode of 6th foot and LED light of depressor, the cathode and LED light of the other end the 5th diode of connection of the 6th capacitance are just
Pole, the 5th foot of the anode connection transformer of the 5th diode, the cathode of the 4th diode connect the another of 3rd resistor
One end, the other end of the 8th capacitance and the other end of the 9th capacitance are with being all connected with TM feet and the third of control chip, described
The EN feet for controlling chip connect the other end of the 8th resistance, and the DRV feet of the control chip connect metal-oxide-semiconductor by the 9th resistance
The source electrode of grid, the metal-oxide-semiconductor connects the ends ISEN of control chip by the tenth resistance, connects the 4th also by eleventh resistor
The one end and the 5th on ground, the other end of the 11st capacitance, the control GND feet of chip, the other end of the 7th resistance, the 6th resistance
Ground, the other end of the 6th resistance control the COMP feet of chip by the tenth capacitance connection.
In the surge protection circuit of the LED control devices, the model 7D471 of second varistor.
In the surge protection circuit of the LED control devices, first diode and the second diode are voltage stabilizing
Diode.
In the surge protection circuit of the LED control devices, the voltage stabilizing value of first diode and the second diode
It is 36V.
In the surge protection circuit of the LED control devices, the model SY5800B of the control chip.
A kind of LED control devices, including surge protection circuit as described above.
Compared to the prior art, in LED control devices and its surge protection circuit provided by the utility model, the surge
Protection circuit includes and exporting second after being filtered to the first voltage of electric main input for absorbing differential mode surge voltage
The differential mode surge voltage absorption module of voltage；Is exported for absorbing common mode surge voltage, and after being filtered to second voltage
The common mode surge voltage absorption module of three voltages；For the 4th voltage of output after tertiary voltage is carried out rectification and is filtered
Filter rectification module；For exporting the flyback module powered to LED light after the 4th voltage is converted to the 5th voltage；The differential mode
Surge voltage absorption module, common mode surge voltage absorption module, filter rectification module and flyback module are sequentially connected.This practicality is new
Type is absorbed by discharging the voltage on common mode inductance, is being inhaled to reach by the way that common mode surge voltage absorption module is arranged
The purpose that common mode surge voltage is absorbed while astigmat mould surge voltage ensures the component in circuit not by the shadow of surge impact
It rings.
Description of the drawings
Fig. 1 is the schematic diagram of the surge protection circuit of existing LED control devices.
Fig. 2 is the schematic diagram of the surge protection circuit of LED control devices provided by the utility model.
Specific implementation mode
A kind of LED control devices of the utility model offer and its surge protection circuit, to make the purpose of this utility model, skill
Art scheme and effect are clearer, clear, and the utility model is further described in the embodiment that develops simultaneously referring to the drawings.It answers
Work as understanding, specific embodiment described herein only to explain the utility model, is not used to limit the utility model.
Referring to Fig. 2, the surge protection circuit of LED control devices provided by the utility model, input terminal connection exchange city
Electricity, output end connect LED light, are converted to electric main pressure needed for LED light by the surge protection circuit of LED control devices
After voltage, give LED light power supply, wherein phenomena such as surge protection circuit can also be absorbed as being struck by lightning and caused by surge electricity
Pressure to protect LED light without damage, and avoids causing unnecessary loss of property or casualties.
When it is implemented, the surge protection circuit of the LED control devices include differential mode surge voltage absorption module 100,
Common mode surge voltage absorption module 200, filter rectification module 300 and flyback module 400, the differential mode surge voltage absorption module
100, common mode surge voltage absorption module 200, filter rectification module 300 and flyback module 400 are sequentially connected.
Specifically, the differential mode surge voltage absorption module 100 is used to absorb differential mode surge voltage, and to electric main
The first voltage of input exports second voltage after being filtered；The common mode surge voltage absorption module 200 is for absorbing common mode
Surge voltage, and export tertiary voltage after being filtered to second voltage；The filter rectification module 300 is used for tertiary voltage
It carries out rectification and exports the 4th voltage after being filtered；The flyback module 400 is used to the 4th voltage being converted to the 5th voltage
After export give LED light power supply, the utility model pass through on the basis of existing surge protection circuit be arranged common mode surge voltage
Absorption module 200 absorbs differential mode surge voltage using differential mode surge voltage absorption module 100, is inhaled using common mode surge voltage
Module 200 is received to absorb common mode surge voltage, has achieved the purpose that while having absorbed differential mode surge voltage and common mode surge voltage, kept away
Exempt from common mode surge voltage to be gathered on common mode inductance, to which the electric elements further avoided in circuit are damaged by surge impact
Bad, circuit structure is simple, at low cost, and protecting effect is apparent.
Furthermore, it is understood that referring to Fig. 2, the differential mode surge voltage absorption module 100 include fuse F1, it is first pressure-sensitive
One end of resistance MOV1 and the first capacitance C1, the fuse F1 connect the firewire of electric main, and the fuse F1's is another
End connection one end of the first varistor MOV1, one end of the first capacitance C1 and common mode surge voltage absorption module 200, described the
The zero curve of other end connection electric main, the other end of the first capacitance C1 and the common mode surge voltage of one varistor MOV1 absorbs
Module 200.
Specifically, it fuses when electric currents of the fuse F1 in circuit is excessive, ensures that electric elements are not burnt
Bad, when it is implemented, self-recovery fuse can be used in the fuse F1, the first varistor MOV1 is for absorbing differential mode
Surge voltage（Voltage i.e. between line and line）, can between transient absorption line and line 1KV or so surge impact voltage, described
One capacitance C1 is filter capacitor, is filtered for the electric main to input, ensures the stability of voltage.
Please continue to refer to Fig. 2, the common mode surge voltage absorption module 200 includes common mode inductance L1, the first diode
The 1st foot of ZD1, the second diode ZD2 and the second varistor MOV2, the common mode inductance L1 connect the another of fuse F1
End, the crus secunda connection filter rectification module 300 of the common mode inductance L1, the first pressure of the 3rd foot connection of the common mode inductance L1
The cathode of the anode of the other end of quick resistance MOV1 and the first diode ZD1, the first diode ZD1 connects the second diode
The cathode of ZD2, one end of the second varistor MOV2 of anode connection of the second diode ZD2, second varistor
The 4th foot and filter rectification module 300 of the other end connection common mode inductance L1 of MOV2.
Specifically, the utility model increases a common mode surge voltage compared to existing surge protection circuit and absorbs
Module 200, in winding both ends of L1 common mode inductances in parallel 2 zener diodes and a varistor.When into line
Between ground when the surge test of 2kV, common mode surge voltage induces very high voltage on common mode inductance L1, as common mode inductance L1
On voltage when being more than the voltage value of voltage value the+the first diode ZD1 and the second diode ZD2 of the second varistor MOV2,
The circuit of the winding composition of first diode ZD1, the second diode ZD2, the second varistor MOV2 and common mode inductance L1
It will be connected, the voltage on common mode inductance L1 will be released absorption, and the high pressure avoided in this way on common mode inductance L1 passes to
Rear class damages the electric elements of late-class circuit.The value of the second varistor MOV2 in circuit can be according to input terminal alternating current
Source voltage range selects, in preferred embodiment, for the range for exchanging AC90 ~ 277V, and the second varistor MOV2
Model 7D471；The first diode ZD1 and the second diode ZD2 in circuit are all made of zener diode, voltage stabilizing value one
As tens volts of value, in preferred embodiment, the voltage stabilizing value of the first diode ZD1 and the second diode ZD2 are 36V.
It is absorbed by using the circuit of the first diode ZD1, the second diode ZD2 and the second varistor MOV2 compositions
Common mode surge voltage, the electric elements avoided in circuit are damaged by common mode surge voltage impact, better so as to reach
Surge protection effect.
Please continue to refer to Fig. 2, the filter rectification module 300 includes the second capacitance C2, third capacitance C3, the 4th capacitance
The 2nd foot of one end connection common mode inductance L1 of C4, the first inductance L2, first resistor R1 and rectifier bridge BD1, the second capacitance C2
With the 1st foot of rectifier bridge BD1, one end of the first inductance L2 of other end connection of the second capacitance C2, the one of first resistor R1
The one end at end and the 4th capacitance C4, the ground wire of the other end connection electric main of the 4th capacitance C4, the first inductance L2
Other end connection first resistor R1 the other end and rectifier bridge BD1 the 2nd foot, the 3rd foot of the rectifier bridge BD1 connects third
One end of capacitance C3 and flyback module 400, the other end and the first ground of the 4th foot connection third capacitance C3 of the rectifier bridge BD1.
Specifically, the second capacitance C2, third capacitance C3 and the 4th capacitance C4 are filter capacitor, first electricity
Sense L2 is played a filtering role, and the rectifier bridge BD1 is full-bridge type rectifier bridge, including four diodes, for being by AC rectification
It is exported after direct current, so as to power to LED light.
Please continue to refer to Fig. 2, the flyback module 400 includes control chip U1, the 5th capacitance C5, the 6th capacitance C6, the
Seven capacitance C7, the 8th capacitance C8, the 9th capacitance C9, the tenth capacitance C10, the 11st capacitance C11, second resistance R2,3rd resistor
R3, the 4th resistance R4, the 5th resistance R5, the 6th resistance R6, the 7th resistance R7, the 8th resistance R8, the 9th resistance R9, the tenth resistance
R10, eleventh resistor R11, third diode D1, the 4th diode D2, the 5th diode D3, metal-oxide-semiconductor V1 and transformer T1, institute
State one end of the 1st foot connection second resistance R2 of transformer T1, the 3rd foot of one end of the 5th capacitance C5 and rectifier bridge BD1,
Pass sequentially through one end, one end of the 9th capacitance C9,3rd resistor of the 8th capacitance C8 of the 4th resistance R4 and the 5th resistance R5 connections
2nd foot of the VIN feet of one end of R3, one end of the 8th resistance R8 and control chip U1, the transformer T1 connects the three or two pole
The anode of pipe D1 and the drain electrode of metal-oxide-semiconductor V1, the other end and the 5th of the cathode connection second resistance R2 of the third diode D1
3rd foot of the other end of capacitance C5, the transformer T1 connects the anode of the 4th diode D2, also passes sequentially through twelfth resistor
R12 connects the TCS of one end of the 11st capacitance C11, one end of the 7th resistance R7 and control chip U1 with thirteenth resistor R13
Foot, the 4th foot of the transformer T1 connect one end and the second ground of the 7th capacitance C7, the other end connection of the 7th capacitance C7
One end of 6th capacitance R6, the 6th foot and LED light of transformer T1 cathode, the 6th capacitance C6 the other end connection the 5th
The cathode of diode D3 and the anode of LED light, the 5th foot of the anode connection transformer T1 of the 5th diode D3, described the
The other end of the cathode connection 3rd resistor R3 of four diode D2, the other end of the 8th capacitance C8 and the 9th capacitance C9's is another
With being all connected with TM feet and the third of control chip U1, the EN feet of the control chip U1 connect the another of the 8th resistance R8 for one end
End, the DRV feet of the control chip U1 are passed through by the grid of the 9th resistance R9 connection metal-oxide-semiconductors V1, the source electrode of the metal-oxide-semiconductor V1
Tenth resistance R10 connections control the ends ISEN of chip U1, also by the 4th ground of eleventh resistor R11 connections, the 11st capacitance C11
The other end, the GND feet of control chip U1, the other end of the 7th resistance R7, the 6th resistance R6 one end and the 5th ground, described the
The other end of six resistance R6 controls the COMP feet of chip U1 by the tenth capacitance C10 connections.
Specifically, the flyback module 400 is used as main switch module, and major function is by auxiliary winding（Transformer T1
Secondary windings）When powering to subsequent conditioning circuit, power normal, the 5th voltage is exported to LED by the secondary windings of transformer T1
Lamp is powered, and constant current driving is provided for LED light, wherein the model SY5800B of the control chip U1, is a kind of circuit of reversed excitation control
Coremaking piece.
Based on the surge protection circuit of above-mentioned LED control devices, the utility model also correspondingly provides a kind of LED controls dress
It sets, including surge protection circuit as described above, it is no longer superfluous herein since surge protection circuit being described in detail above
It states.
In conclusion in LED control devices provided by the utility model and its surge protection circuit, the surge protection electricity
Road includes and the output second voltage after being filtered to the first voltage of electric main input for absorbing differential mode surge voltage
Differential mode surge voltage absorption module；For absorbing common mode surge voltage, and tertiary voltage is exported after being filtered to second voltage
Common mode surge voltage absorption module；Filtering for the 4th voltage of output after tertiary voltage is carried out rectification and is filtered is whole
Flow module；For exporting the flyback module powered to LED light after the 4th voltage is converted to the 5th voltage；The differential mode surge electricity
Pressure absorption module, common mode surge voltage absorption module, filter rectification module and flyback module are sequentially connected.The utility model passes through
Common mode surge voltage absorption module is set, is absorbed by discharging the voltage on common mode inductance, is absorbing differential mode to reach
The purpose that common mode surge voltage is absorbed while surge voltage ensures that the component in circuit is not influenced by surge impact.
It is understood that for those of ordinary skills, can with technical solution according to the present utility model and
The design of its utility model is subject to equivalent substitution or change, and all these changes or replacement should all belong to appended by the utility model
Scope of the claims.
Claims (10)
1. a kind of surge protection circuit of LED control devices, which is characterized in that including：
The difference of second voltage is exported for absorbing differential mode surge voltage, and after being filtered to the first voltage of electric main input
Mould surge voltage absorption module；
The common mode surge voltage that tertiary voltage is exported for absorbing common mode surge voltage, and after being filtered to second voltage absorbs
Module；
Filter rectification module for the 4th voltage of output after tertiary voltage is carried out rectification and is filtered；
For exporting the flyback module powered to LED light after the 4th voltage is converted to the 5th voltage；
The differential mode surge voltage absorption module, common mode surge voltage absorption module, filter rectification module and flyback module are successively
Connection.
2. the surge protection circuit of LED control devices according to claim 1, which is characterized in that the differential mode surge electricity
Pressure absorption module includes fuse, the first varistor and the first capacitance, the fire of one end connection electric main of the fuse
Line, the other end of the fuse connect one end of the first varistor, one end of the first capacitance and common mode surge voltage and absorb
Module, the zero curve of other end connection electric main, the other end of the first capacitance and the common mode surge electricity of first varistor
Press absorption module.
3. the surge protection circuit of LED control devices according to claim 2, which is characterized in that the common mode surge electricity
Pressure absorption module includes common mode inductance, the first diode, the second diode and the second varistor, and the 1st of the common mode inductance the
Foot connects the other end of fuse, and the crus secunda of the common mode inductance connects filter rectification module, the 3rd foot of the common mode inductance
The anode of the other end and the first diode of the first varistor is connected, the cathode of first diode connects the second diode
Cathode, one end of anode the second varistor of connection of second diode, the other end of second varistor connects
Connect the 4th foot and filter rectification module of common mode inductance.
4. the surge protection circuit of LED control devices according to claim 3, which is characterized in that the filter rectification mould
Block includes the second capacitance, third capacitance, the 4th capacitance, the first inductance, first resistor and rectifier bridge, one end of second capacitance
Connect the 1st foot of the 2nd foot and rectifier bridge of common mode inductance, the other end of second capacitance connects one end of the first inductance, the
One end of one end of one resistance and the 4th capacitance, the ground wire of the other end connection electric main of the 4th capacitance, described first
2nd foot of the other end and rectifier bridge of the other end connection first resistor of inductance, the 3rd foot of the rectifier bridge connect third capacitance
One end and flyback module, the rectifier bridge the 4th foot connection third capacitance the other end and the first ground.
5. the surge protection circuit of LED control devices according to claim 4, which is characterized in that the flyback module packet
Include control chip, the 5th capacitance, the 6th capacitance, the 7th capacitance, the 8th capacitance, the 9th capacitance, the tenth capacitance, the 11st capacitance,
Second resistance, 3rd resistor, the 4th resistance, the 5th resistance, the 6th resistance, the 7th resistance, the 8th resistance, the 9th resistance, the tenth
Resistance, eleventh resistor, third diode, the 4th diode, the 5th diode, metal-oxide-semiconductor and transformer, the of the transformer
1 foot connection one end of second resistance, one end of the 5th capacitance and rectifier bridge the 3rd foot, also pass sequentially through the 4th resistance and the 5th
Resistance connects one end, one end of the 9th capacitance, one end of 3rd resistor, one end of the 8th resistance and the control chip of the 8th capacitance
VIN feet, the drain electrode of the anode and metal-oxide-semiconductor of the 2nd foot connection third diode of the transformer, the third diode it is negative
Pole connects the other end of the other end and the 5th capacitance of second resistance, and the 3rd foot of the transformer is connecting the 4th diode just
Pole also passes sequentially through twelfth resistor and connects one end of the 11st capacitance, one end of the 7th resistance and control with thirteenth resistor
The TCS feet of chip, the 4th foot of the transformer connect one end and the second ground of the 7th capacitance, the other end of the 7th capacitance
Connect one end of the 6th capacitance, the 6th foot and LED light of transformer cathode, the 6th capacitance the other end connection the five or two
The cathode of pole pipe and the anode of LED light, the 5th foot of the anode connection transformer of the 5th diode, the 4th diode
Cathode connection 3rd resistor the other end, the other end of the 8th capacitance and the other end of the 9th capacitance are all connected with control core
The TM feet of piece and third, the EN feet of the control chip connect the other end of the 8th resistance, and the DRV feet of the control chip are logical
Cross the grid of the 9th resistance connection metal-oxide-semiconductor, the source electrode of the metal-oxide-semiconductor connected by the tenth resistance control chip the ends ISEN,
By eleventh resistor connect the 4th ground, the 11st capacitance the other end, control the GND feet of chip, the 7th resistance the other end,
One end and the 5th ground of 6th resistance, the other end of the 6th resistance control the COMP feet of chip by the tenth capacitance connection.
6. the surge protection circuit of LED control devices according to claim 5, which is characterized in that the second pressure-sensitive electricity
The model 7D471 of resistance.
7. the surge protection circuit of LED control devices according to claim 5, which is characterized in that first diode
It is zener diode with the second diode.
8. the surge protection circuit of LED control devices according to claim 7, which is characterized in that first diode
Voltage stabilizing value with the second diode is 36V.
9. the surge protection circuit of LED control devices according to claim 8, which is characterized in that the control chip
Model SY5800B.
10. a kind of LED control devices, which is characterized in that including surge protection as described in any one of claims 1-9 electricity
Road.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721495348.8U CN207820269U (en) | 2017-11-10 | 2017-11-10 | A kind of LED control devices and its surge protection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721495348.8U CN207820269U (en) | 2017-11-10 | 2017-11-10 | A kind of LED control devices and its surge protection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207820269U true CN207820269U (en) | 2018-09-04 |
Family
ID=63334506
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721495348.8U Active CN207820269U (en) | 2017-11-10 | 2017-11-10 | A kind of LED control devices and its surge protection circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207820269U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112054660A (en) * | 2020-08-28 | 2020-12-08 | 宁波市镇海华泰电器有限公司 | Pulse high-voltage power supply with self-inductance mutual-inductance current loop and anti-interference circuit |
| CN112993943A (en) * | 2021-03-25 | 2021-06-18 | 深圳市同昌汇能科技发展有限公司 | Driving protection circuit of vacuum circuit breaker |
-
2017
- 2017-11-10 CN CN201721495348.8U patent/CN207820269U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112054660A (en) * | 2020-08-28 | 2020-12-08 | 宁波市镇海华泰电器有限公司 | Pulse high-voltage power supply with self-inductance mutual-inductance current loop and anti-interference circuit |
| CN112054660B (en) * | 2020-08-28 | 2024-01-05 | 宁波市镇海华泰电器有限公司 | Pulse high-voltage power supply with self-inductance current loop and anti-interference circuit |
| CN112993943A (en) * | 2021-03-25 | 2021-06-18 | 深圳市同昌汇能科技发展有限公司 | Driving protection circuit of vacuum circuit breaker |
| CN112993943B (en) * | 2021-03-25 | 2023-05-26 | 深圳市同昌汇能科技发展有限公司 | Drive protection circuit of vacuum circuit breaker |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205029930U (en) | Stroboscopic LED driver is removed to wide voltage high efficiency of 9 -48V scope | |
| CN102215615A (en) | Driving circuit for LED (light emitting diode) lamp | |
| CN203537225U (en) | Novel antisurge constant-current switching power supply | |
| CN207820269U (en) | A kind of LED control devices and its surge protection circuit | |
| CN204578876U (en) | A kind of power driving circuit of AC/DC | |
| CN202005025U (en) | LED (light emitting diode) driver circuit | |
| CN204518147U (en) | A kind of LED drive circuit | |
| CN104080221B (en) | A kind of LED drive circuit and LED light | |
| CN207947917U (en) | LED drive module, LED drive circuit and LED drive power | |
| CN205583646U (en) | Earth leakage protection wall switch | |
| CN106793346A (en) | Low-voltage dimming power source | |
| CN204191002U (en) | Can the LED drive circuit of anti-2KV surge voltage | |
| TWM464965U (en) | LED driving circuit with high power factor and high current precision | |
| CN201037608Y (en) | LED energy-saving lamp device | |
| CN203119475U (en) | Anti-inductive-lightning circuit and outdoor lamp | |
| CN109066636A (en) | A kind of circuit of Anti-surging | |
| CN201805590U (en) | LED street lamp and drive power circuit thereof | |
| CN205005320U (en) | Driving circuit of light -emitting diode (LED) fluorescent tube | |
| CN110461070B (en) | LED lamp and power supply control module thereof | |
| JP2022128382A (en) | Lighting tube that has electric shock prevention protection and compatibility with various stable current supply modes | |
| CN208369896U (en) | A kind of anti-lightning LED drive circuit | |
| CN207926177U (en) | A kind of lightning stroke absorbing circuit | |
| CN209593816U (en) | Linear voltage-stabilizing circuit and regulated power supply system | |
| CN201674689U (en) | Power circuit | |
| CN203340371U (en) | Low-power LED lamp driving power supply |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |