CN210143135U - No stroboscopic LED panel light power - Google Patents
No stroboscopic LED panel light power Download PDFInfo
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- CN210143135U CN210143135U CN201822218667.5U CN201822218667U CN210143135U CN 210143135 U CN210143135 U CN 210143135U CN 201822218667 U CN201822218667 U CN 201822218667U CN 210143135 U CN210143135 U CN 210143135U
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Abstract
The utility model relates to a no stroboscopic LED panel light power, remove stroboscopic circuit including EMI filter circuit, power management circuit, high frequency transformer, rectification filter output circuit, constant current, EMI filter circuit, power management circuit, high frequency transformer, rectification filter output circuit and constant current remove stroboscopic circuit and link to each other in proper order. Adopt two-stage LED drive circuit, whole circuit passes through rectification filtering with the alternating voltage that frequency is 50Hz, 220V and outputs stable direct current voltage, finally provides 40W and above driving force, and the stroboscopic circuit is removed to the constant current is used for driving the LED lamp plate, realizes not having stroboscopic current voltage output. Therefore, the harm to the health of people caused by stroboflash is avoided.
Description
Technical Field
The utility model relates to a LED lighting drive technical field especially relates to a no stroboscopic LED panel light power.
Background
With the rapid development of power electronics technology, power electronics devices are used to control or convert electric energy to achieve reasonable and efficient energy utilization, and the present invention is particularly prominent in the field of LED driving. At present, the LED is the internationally recognized next-generation lighting source with energy conservation, environmental protection, high efficiency and long service life. As white LED technology matures, it will be more widely applied to various fields. Unlike conventional light sources, white LEDs require dedicated constant current drive to operate efficiently and continuously. Therefore, the hot spot of the present power electronic research on the reliable and efficient design of LED driving circuit, in the process of which, the volume is smaller, the electromagnetic pollution is less, and the technology with reliable over-voltage and over-current protection circuit is continuously needed to be researched, especially in the aspect of LED driving, the development is especially prominent, so that the full-voltage non-stroboscopic, high power factor, high efficiency and the like are required.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a no stroboscopic LED panel light power aims at solving among the prior art LED illumination and does not have stroboscopic mains power factor low, and the harmonic is serious, causes the problem to other consumer interference.
In order to achieve the above purpose, the technical scheme of the utility model is as follows:
a non-stroboscopic LED panel lamp power supply comprises an EMI filter circuit, a power management circuit, a high-frequency transformer, a rectification filter output circuit and a constant-current stroboscopic-removing circuit, wherein the EMI filter circuit, the power management circuit, the high-frequency transformer and the rectification filter output circuit are sequentially connected.
In the scheme, the EMI filter circuit consists of a fuse FUI, a piezoresistor YM1, an EMI antijamming device, a BR1 bridge rectifier, a piezoresistor YM2, a resistor R3, an inductor L2, a capacitor C2 and a capacitor C3; AC mains supply input is connected with an EMI interference suppressor after passing through the fuse FUI and the piezoresistor YM2, the EMI interference suppressor is connected with the input end of a BR1 bridge rectifier, the output end of the BR1 bridge rectifier is respectively connected with one end of the piezoresistor YM2, one end of the capacitor C2 and one end of the inductor L2, the other end of the inductor L2 is connected with one end of the capacitor C3, the resistor R3 is connected with the inductor L2 in parallel, and the grounding end of the BR1 bridge rectifier, the piezoresistor YM2, the capacitor C2 and the other end of the capacitor C3 are grounded.
In the above scheme, the rectifying and filtering output circuit includes a diode D6, a diode D7, a capacitor C11, a capacitor C12, a capacitor C13, and resistors R30 to R33, the output end of the high-frequency transformer is connected to one end of the capacitor C13, the anode of the diode D6, and the anode of the diode D7, the other end of the capacitor C13 is connected to one end of the resistors R30 and R31, the other end of the resistor R30, the other end of the resistor R31, the cathode of the diode D6, and the cathode of the diode D7 are connected to one ends of the capacitor C11, the capacitor C12, the resistor R32, and the resistor R33, and the output end of the high-frequency transformer is connected to the other ends of the capacitor C11, the capacitor C12, the resistor R32, and the resistor.
In the above scheme, the constant-current stroboscopic-removing circuit includes a PWM controller, an inductor L3, an inductor L4, a capacitor C14 to a capacitor C19, a resistor R35 to a resistor R43, and a diode D8 to a diode D10; the model of the PWM controller is RT8458, the VC end of an RT8458 chip is connected with one end of a resistor R and one end of a capacitor C, the other end of the resistor R is connected with the capacitor C, the VCC end of the RT8458 chip is connected with a power supply, one end of the resistor R is connected with the VCC end of the RT8458 chip, the other end of the resistor R is connected with the ACTL end of the RT8458 chip, one end of the capacitor C is connected with the power supply, the other ends of the capacitor C, the capacitor C and the GND end of the RT8458 chip are connected with the output end of a high-frequency transformer, the SENE end of the RT8458 chip is connected with one ends of the resistor R, the resistor R and the inductor L, the other ends of the resistor R, the resistor R and the resistor R are connected with the emitting electrode of the MOS tube Q, the GATE end of the RT8458 chip is respectively connected with the cathode of a diode D, the cathode of the diode D and one end of the resistor, an emitter of the MOS transistor Q2 is connected to a cathode of the diode D10 and one end of the resistor R39, the other end of the inductor L3 is connected to an anode of the capacitor C18, the resistor R43, and the inductor L4, the other end of the inductor L4 is connected to the capacitor C19, the other end of the capacitor C19 is grounded, the other end of the resistor R39 is connected to one end of the capacitor C17, and the other end of the capacitor C17, the anode of the diode D10, the cathode of the capacitor C18, and the other end of the resistor R43 are connected to the resistor R33.
In the scheme, the type of the high-frequency transformer is PQ 2625.
The utility model discloses a no stroboscopic LED panel light power adopts LED drive circuit, and whole circuit exports stable direct current voltage for 50Hz, 220V's alternating voltage through rectification filtering with the frequency, finally provides 40W and above driving force, and the stroboscopic circuit is removed to the constant current, is used for driving the LED lamp plate, realizes no stroboscopic current voltage output. Therefore, the harm to the health of people caused by stroboflash is avoided.
Drawings
Fig. 1 is a schematic block diagram of a power supply of a non-stroboscopic LED panel lamp according to an embodiment of the present invention;
fig. 2 is a circuit diagram of an EMI filter circuit according to an embodiment of the present invention;
fig. 3 is a circuit diagram of a power management circuit, a high-frequency transformer, and a rectifying and filtering output circuit according to an embodiment of the present invention;
fig. 4 is a circuit diagram of a constant current stroboscopic removing circuit according to an embodiment of the present invention.
Detailed Description
The technical solution of the present invention will be further described in detail with reference to the accompanying drawings.
As shown in FIG. 1, the utility model discloses a no stroboscopic LED panel light power, remove stroboscopic circuit including EMI filter circuit, power management circuit, high frequency transformer, rectification filter output circuit, constant current. The EMI filter circuit, the power management circuit, the high-frequency transformer, the rectification filter output circuit and the constant-current stroboscopic-removing circuit are sequentially connected.
In one embodiment, as shown in fig. 2, the EMI filter circuit includes a fuse FUI, a voltage dependent resistor YM1, a BR1 bridge rectifier, a voltage dependent resistor YM2, resistors R1-R3, an inductor L1, an inductor L2, an inductor LF1, and capacitors C1-C3. The AC input voltage AC170-264V is respectively connected with one end of an inductor L1 through a fuse FUI, the other end of the inductor L1 is connected with an inductor LF1, a piezoresistor YM1 is connected with an inductor L1 in parallel, a resistor R1 and a resistor R2 are connected in series and then connected with an inductor L1 in parallel, a capacitor C1 is connected with an inductor LF1 in parallel, the inductor LF1 is connected with the input end of a BR1 bridge rectifier, the output end of the BR1 bridge rectifier is respectively connected with one end of a piezoresistor YM2, a capacitor C2 and an inductor L2, the other end of the inductor L2 is connected with one end of a capacitor C3, a resistor R3 is connected with an inductor L2 in parallel, and the grounding end of a BR1 bridge rectifier, the piezoresistor YM2, the capacitor C84.
In one embodiment, as shown in fig. 3, the power management circuit includes a main power control chip R17300B, a MOS transistor Q1, a resistor R4 to a resistor R29, a capacitor C4 to a capacitor C12, and a light emitting diode D1 to a light emitting diode D4. The CS end of the main power control chip R17300B is grounded through a capacitor C7, the FF end is grounded through a resistor R25 and a capacitor C6, the COMP end is grounded through a resistor R24 and a capacitor C5, the VDD end is connected to a resistor R6, a capacitor C8, a capacitor C9 and the cathode of a diode D3, the anode of a diode D3 is connected to the anode of a diode D4 and a resistor R28, the cathode of a diode D4 is connected to a resistor R26 and a capacitor C10, the other end of a resistor R26 is connected to the INV end of the main power control chip R17300B and one end of a resistor R27, the other end of the resistor R28 is connected to the input end of a transformer and one end of a resistor R29, the other end of the resistor R29 is connected to the ZCD end of the main power control chip R17300B, the capacitors C8, the resistors R8, the other ends of the resistors R8 and the resistors 8 are connected in parallel, the resistors R8 and the resistors 8, the resistors R8 are connected in parallel, the parallel connection with the resistors R8, and the resistors 8, the resistors R, One end of a resistor R10, a resistor R12, a resistor R13, a resistor R14 and a capacitor C4, the other end of the resistor R12, the other end of a resistor R13, the other end of the resistor R14 and the other end of the capacitor C4 are respectively connected with a resistor R15 and a resistor R16, the other end of the resistor R15 and the other end of the resistor R16 are connected with the negative electrode of a diode D2, the positive electrode of the diode D2 is respectively connected with the input end of a transformer and the collector of an MOS tube Q1, the base of the MOS tube Q1 is respectively connected with the positive electrode of a diode D1, a resistor R17 and a resistor R19, the negative electrode of a diode D1 and the other end of a resistor R7 are respectively connected with the GD end of a main power control chip R173, the resistor R18, the resistor R20, the resistor R21, the resistor R22 and the resistor R23 are connected, the other end of the resistor R18 is connected with the CS end of the main power control chip R17300B, the other ends of the resistor R20, the resistor R21, the resistor R22 and the resistor R23 are grounded, and the resistor R10 is connected with the FF end of the main power control chip R17300B through the resistor R11.
In one embodiment, the rectifying-filtering output circuit includes a light emitting diode D5 to a light emitting diode D7, a capacitor C11 to a capacitor C13, and a resistor R30 to a resistor R34. The output end of the high-frequency transformer is connected with the capacitor C13, the anode of the diode D6 and the anode of the diode D7 respectively, the other end of the capacitor C13 is connected with the resistor R30 and the resistor R31 respectively, the resistors R30, R31 and the cathode of the diode D6 and the cathode of the diode D7 are connected with one ends of the capacitor C11, the capacitor C12, the resistor R32 and the resistor R33, and the output end of the high-frequency transformer is connected with the other ends of the capacitor C11, the capacitor C12, the resistor R32 and the resistor R33.
In one embodiment, as shown in fig. 4, the constant current stroboscopic removing circuit includes a PWM controller, an inductor L3, an inductor L4, a capacitor C14 to a capacitor C19, a resistor R35 to a resistor R43, and a diode D8 to a diode D10. Wherein, the model of the PWM controller is RT8458, the 5VC end of the RT8458 chip is connected with one end of a resistor R and a capacitor C, the other end of the resistor R is connected with the capacitor C, the VCC end of the RT8458 chip is connected with a power supply, one end of the resistor R is connected with the VCC end of the RT8458 chip, the other end of the resistor R is connected with the ACTL end of the RT8458 chip, one end of the capacitor C is connected with the power supply, the GND ends of the capacitor C, the capacitor C and the RT8458 chip are connected with the output end of a high-frequency transformer, the SENE end of the RT8458 chip is connected with one ends of the resistor R, the resistor R and an inductor L, the other ends of the resistor R, the resistor R and the resistor R are connected with the emitter of the MOS tube Q, the GATE end of the RT8458 chip is respectively connected with the cathode of a diode D, the cathode of the diode D and one end of the resistor R, the anode of the diode, an emitter of the MOS transistor Q2 is connected to a cathode of the diode D10 and the resistor R39, the other end of the inductor L3 is connected to an anode of the capacitor C18, the resistor R43 and the inductor L4, the other end of the inductor L4 is connected to the capacitor C19, the other end of the capacitor C19 is grounded, the resistor R39 is connected to the resistor R33 through the capacitor C17, and an anode of the diode D10, a cathode of the capacitor C18 and the other end of the resistor R43 are connected to the resistor R33.
When the LED light source is in work, AC mains supply finally outputs DC40V/1000MA constant current voltage which accords with the normal lighting of the LED light source through a fuse, an EMI filter circuit, a bridge rectifier circuit, a power management circuit, a high-frequency transformer PQ2625, a rectifier filter output circuit and a constant-current stroboscopic-removing circuit. The fuse FU1 has the function of preventing fire or electric shock due to the fact that the fuse is blown by overlarge current when a power supply is damaged or short-circuited; the piezoresistor YM1 is used for preventing lightning from damaging the power supply; the EMI anti-interference device prevents the interference of high-frequency harmonic waves generated when the power supply works on other electric equipment; the BR1 bridge rectification is a bridge rectification device and is used for converting AC170-264V alternating current into direct current; when the output current voltage is unstable, the switching duty ratio of the MOS tube Q1 is adjusted through the main power control chip R17300B to achieve the constancy of the output current voltage; the high-frequency transformer plays a role in isolation and voltage reduction, stable current and voltage are output through the rectifying and filtering output circuit, the DC direct current is reduced and constant-current again through the constant-current stroboscopic-removing circuit to achieve no-stroboscopic current and voltage output DC40V/1A, the PWM controller is mainly used for adjusting the switching duty ratio of the MOS tube Q2 through the RT84 8458A chip when the output current is unstable in change, and current output is limited to achieve constant current. The L3 inductance is used for step-down energy storage, and D10 is used for the afterflow, and L4 is used for filtering and removing the stroboflash and can filter a large amount of alternating current ripples to obtain very little current ripple to realize not having the stroboflash.
The above-mentioned embodiments further explain in detail the objects, technical solutions and advantages of the present invention, and it should be understood that the above-mentioned embodiments are only the embodiments of the present invention, and are not intended to limit the scope of the present invention, any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the scope of the present invention.
Claims (2)
1. The utility model provides a no stroboscopic LED panel light power which characterized in that: the power supply comprises an EMI filter circuit, a power supply management circuit, a high-frequency transformer, a rectification filter output circuit and a constant-current stroboscopic removing circuit, wherein the EMI filter circuit, the power supply management circuit, the high-frequency transformer, the rectification filter output circuit and the constant-current stroboscopic removing circuit are sequentially connected; the EMI filter circuit consists of a fuse FUI, a piezoresistor YM1, an EMI antijamming device, a BR1 bridge rectifier, a piezoresistor YM2, a resistor R3, an inductor L2, a capacitor C2 and a capacitor C3; AC mains supply input is connected with an EMI interference suppressor after passing through the fuse FUI and the piezoresistor YM2, the EMI interference suppressor is connected with the input end of a BR1 bridge rectifier, the output end of the BR1 bridge rectifier is respectively connected with one end of the piezoresistor YM2, one end of the capacitor C2 and one end of the inductor L2, the other end of the inductor L2 is connected with one end of the capacitor C3, the resistor R3 is connected with the inductor L2 in parallel, and the grounding end of the BR1 bridge rectifier, the piezoresistor YM2, the other end of the capacitor C2 and the other end of the capacitor C3 are grounded; the rectification filter output circuit comprises a diode D6, a diode D7, a capacitor C11, a capacitor C12, a capacitor C13, a resistor R30 to a resistor R33, the output end of the high-frequency transformer is respectively connected with one end of a capacitor C13, the anode of a diode D6 and the anode of a diode D7, the other end of a capacitor C13 is respectively connected with one ends of a resistor R30 and a resistor R31, the other end of the resistor R30, the other end of a resistor R31, the cathode of a diode D6 and the cathode of a diode D7 are connected with one ends of a capacitor C11, a capacitor C12, a resistor R32 and a resistor R33, and the output end of the high-frequency transformer is connected with the other ends of a capacitor C11, a capacitor C12, a resistor R32 and a resistor; the constant-current stroboscopic-removing circuit comprises a PWM controller, an inductor L3, an inductor L4, a capacitor C14 to a capacitor C19, a resistor R35 to a resistor R43, and a diode D8 to a diode D10; the model of the PWM controller is RT8458, the VC end of an RT8458 chip is connected with one end of a resistor R and one end of a capacitor C, the other end of the resistor R is connected with the capacitor C, the VCC end of the RT8458 chip is connected with a power supply, one end of the resistor R is connected with the VCC end of the RT8458 chip, the other end of the resistor R is connected with the ACTL end of the RT8458 chip, one end of the capacitor C is connected with the power supply, the other ends of the capacitor C, the capacitor C and the GND end of the RT8458 chip are connected with the output end of a high-frequency transformer, the SENE end of the RT8458 chip is connected with one ends of the resistor R, the resistor R and the inductor L, the other ends of the resistor R, the resistor R and the resistor R are connected with the emitting electrode of the MOS tube Q, the GATE end of the RT8458 chip is respectively connected with the cathode of a diode D, the cathode of the diode D and one end of the resistor, an emitter of the MOS transistor Q2 is connected to a cathode of the diode D10 and one end of the resistor R39, the other end of the inductor L3 is connected to an anode of the capacitor C18, the resistor R43, and the inductor L4, the other end of the inductor L4 is connected to the capacitor C19, the other end of the capacitor C19 is grounded, the other end of the resistor R39 is connected to one end of the capacitor C17, and the other end of the capacitor C17, the anode of the diode D10, the cathode of the capacitor C18, and the other end of the resistor R43 are connected to the resistor R33.
2. The non-strobe LED panel light power supply of claim 1, characterized in that: the high-frequency transformer is of a model PQ 2625.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822218667.5U CN210143135U (en) | 2018-12-27 | 2018-12-27 | No stroboscopic LED panel light power |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822218667.5U CN210143135U (en) | 2018-12-27 | 2018-12-27 | No stroboscopic LED panel light power |
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| Publication Number | Publication Date |
|---|---|
| CN210143135U true CN210143135U (en) | 2020-03-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822218667.5U Active CN210143135U (en) | 2018-12-27 | 2018-12-27 | No stroboscopic LED panel light power |
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| Country | Link |
|---|---|
| CN (1) | CN210143135U (en) |
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- 2018-12-27 CN CN201822218667.5U patent/CN210143135U/en active Active
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