WO2013063770A1 - 切换调光led驱动电路及led灯组 - Google Patents

切换调光led驱动电路及led灯组 Download PDF

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Publication number
WO2013063770A1
WO2013063770A1 PCT/CN2011/081671 CN2011081671W WO2013063770A1 WO 2013063770 A1 WO2013063770 A1 WO 2013063770A1 CN 2011081671 W CN2011081671 W CN 2011081671W WO 2013063770 A1 WO2013063770 A1 WO 2013063770A1
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WIPO (PCT)
Prior art keywords
module
driving
voltage
circuit
energy storage
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PCT/CN2011/081671
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English (en)
French (fr)
Inventor
刘益全
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深圳市讯宇创科技有限公司
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Application filed by 深圳市讯宇创科技有限公司 filed Critical 深圳市讯宇创科技有限公司
Priority to PCT/CN2011/081671 priority Critical patent/WO2013063770A1/zh
Publication of WO2013063770A1 publication Critical patent/WO2013063770A1/zh

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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/10—Controlling the intensity of the light
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/30—Driver circuits
    • H05B45/37—Converter circuits
    • H05B45/3725—Switched mode power supply [SMPS]
    • H05B45/382—Switched mode power supply [SMPS] with galvanic isolation between input and output

Definitions

  • the invention relates to the field of LED illumination, in particular to a switching dimming LED driving circuit and an LED lamp group. Background technique
  • LED lamps have the advantages of high conversion efficiency, low heat generation and durability. They are known as green lighting products in the 21st century. As LED efficiency continues to increase and prices drop, LED applications are becoming more widespread. In recent years, LED road lighting technology has developed rapidly. Applications are also becoming more widespread.
  • the driving circuits of the existing LEDs are mostly direct driving, and it is difficult to complete the brightness adjustment driving of the LED lamp group, and a few, such as the conventional remote control scheme or the installation of the TRIAC dimmer scheme, have many inconveniences.
  • the remote control dimming scheme must use the governor to dim, and there are defects: 1.
  • the remote controller needs to be installed with a battery, and when the battery is low, the distance of the remote control also becomes closer. 2.
  • the remote control has a certain directionality. 3.
  • the installation of the TRIAC dimmer is essentially the use of thyristor for dimming, and because of its dimming principle, by cutting the alternating current sine wave, the waveform of the alternating sine wave is destroyed, thereby reducing the power factor and increasing the power factor. The harmonic coefficient. Serious interference signals are generated on the line.
  • the thyristor dimming is unstable at low loads, and a bleeder resistor is added to increase the power of the whole machine.
  • the LC filter at the input causes the thyristor to oscillate, which is not visible to the human eye, but produces audible noise and flicker for the LED. Summary of the invention
  • An object of the present invention is to overcome the above drawbacks and to provide an LED driving circuit and an LED lamp group which can safely and conveniently perform brightness adjustment.
  • a switching dimming LED driving circuit comprising a fuse, a rectifier module, a filtering module, a first energy storage module, a startup module, a voltage stabilization filter module, a circuit peak absorption module, and a second storage Energy module, drive IC, switching frequency setting module,
  • the module and the starting module are connected to the voltage stabilizing filter module, and the voltage stabilizing filter module is connected to the driving IC.
  • the driving IC is connected to the driving module through the PWM output, the driving module is connected to the MOS tube, the MOS tube is connected to the input power detecting module, and the input power detecting module is connected.
  • the second channel of the MOS tube is connected to the second energy storage module, the second energy storage module is connected to the driver IC, and the third circuit of the MOS tube is connected to the transformer; the transformer is connected to the voltage regulator filter module, and the other is connected to the isolation rectifier filter.
  • the module, the isolated rectification filter module output is connected to the external LED lamp; the switching frequency setting module is connected to the driving IC; and the circuit peak absorption module is further connected between the MOS tube and the first energy storage module;
  • the fuse is configured to blow the protection circuit when the current is too high
  • the rectifier module is configured to convert an alternating current voltage into a direct current voltage
  • the filtering module is configured to remove a pulsating AC component in the DC voltage to make it a smooth DC voltage
  • the first energy storage module is configured to release the energy storage to make the voltage output to the load smooth when the input voltage is lowered;
  • the startup module is configured to provide a startup voltage when the circuit starts to work
  • the voltage stabilizing filter module is configured to provide a required DC working voltage for the driving IC
  • the circuit peak absorbing module is configured to absorb a spike voltage and current generated in the circuit; and the second energy storage module is configured to continue to supply power to the driving IC when the utility power is disconnected, so as to temporarily maintain its operation;
  • the driving IC is configured to output different control signals to the driving module through the PWM according to the switching frequency interval and the number of on and off switching times;
  • the switching frequency setting module is configured to set a time frequency of an opening and closing interval of the external switch
  • the input power detecting module is configured to collect an output voltage of the MOS tube and feed back to the driving
  • the driving module is configured to receive a driving IC control signal to drive the MOS tube to work;
  • the MOS tube is configured to output correspondingly adjusted output power according to a driving module driving output;
  • the transformer is used for power transmission, voltage conversion and insulation isolation between the MOS tube and the driving external LED;
  • the isolated rectification filtering module is configured to rectify and filter the output of the adjusted voltage to drive the external LED.
  • the isolated rectification filter module includes an electrolytic capacitor and a sixth diode for isolating the rectification;
  • the voltage stabilizing filter module comprises an eighth resistor, a Zener diode, a voltage stabilizing capacitor, a power transistor and a filter capacitor; the eighth resistor input is connected to the startup module, and the eighth resistor output is connected to the power triode base level
  • the other circuit is connected to the voltage stabilizing diode connected in parallel with the voltage stabilizing capacitor;
  • the power transistor emitter input is connected to the driving IC, and the collector is connected to the transformer; and the filter capacitor is respectively connected to the emitter and the collector of the power transistor;
  • the circuit peak absorbing module includes a second resistor, a fourth capacitor, and a second diode, wherein the second resistor is connected in parallel with the fourth capacitor, and one end is connected to the first energy storage module, and the other end is connected to the second second a pole tube; the second diode output is connected to the transformer;
  • the input power detecting module includes a tenth resistor, the tenth resistor is connected to the drain of the MOS transistor, and the tenth resistor is further provided with a wire connected to the driving IC.
  • the invention also relates to an LED lamp set, which comprises an LED group and a switching dimming circuit;
  • the driving circuit comprises a fuse, a rectifying module, a filtering module, a first energy storage module, a starting module, a voltage stabilizing filter module, and a circuit peak absorption Module, second energy storage module, driving IC, switching frequency setting module, input power detecting module, driving module, MOS tube, transformer and isolation rectification filtering module;
  • the mains input fuse, the fuse, the rectifier module, the filter module and the first energy storage module are sequentially connected; the first energy storage module is connected to the startup module, the startup module is connected to the voltage stabilization filter module, and the voltage stabilization filter module is connected to the driving IC.
  • the driving IC is connected to the driving module through the PWM output, the driving module is connected to the MOS tube, the MOS tube is connected to the power detecting module, the input power detecting module is connected to the driving IC, and the second circuit is connected to the second energy storage module and the second energy storage module.
  • the third connection transformer the transformer is connected to the voltage regulator filter module
  • the LED lamp; the switching frequency setting module is connected to the driving IC; the MOS tube and the first energy storage module inter-rate setting module are connected to the driving IC;
  • the fuse is configured to blow the protection circuit when the current is too high
  • the rectifier module is configured to convert an alternating current voltage into a direct current voltage
  • the filtering module is configured to remove a pulsating AC component in the DC voltage to make it a smooth DC voltage
  • the first energy storage module is configured to release the energy storage to make the voltage output to the load smooth when the input voltage is lowered;
  • the startup module is configured to provide a startup voltage when the circuit starts to work
  • the voltage stabilizing filter module is configured to provide a required DC working voltage for the driving IC
  • the circuit peak absorbing module is configured to absorb a spike voltage and current generated in the circuit; and the second energy storage module is configured to continue to supply power to the driving IC when the utility power is disconnected, so as to temporarily maintain its operation;
  • the driving IC is configured to output different control signals to the driving module through the PWM according to the switching frequency interval and the number of on and off switching times;
  • the switching frequency setting module is configured to set a time frequency of an opening and closing interval of the external switch
  • the input power detecting module is configured to collect an output voltage of the MOS tube and feed back to the driving
  • the driving module is configured to receive a driving IC control signal to drive the MOS tube to work; the MOS tube is configured to output a corresponding adjusted output power according to the driving module driving output; the transformer is used for power between the MOS tube and the driving external LED Transmission, voltage conversion and insulation isolation;
  • the isolating rectification filter module is configured to rectify and filter the output of the adjusted voltage to drive the external LED;
  • the isolated rectification filter module includes an electrolytic capacitor and a sixth diode for isolating the rectification;
  • the voltage stabilizing filter module includes an eighth resistor, a Zener diode, and a voltage regulator. a capacitor, a power transistor and a filter capacitor; the eighth resistor input is connected to the start module, the eighth resistor output is connected to the power triode base stage, and the other is connected to the shunt diode connected in parallel with the voltage stabilizing capacitor; the power transistor is emitted a pole input connection driving IC, a collector connection transformer; a filter capacitor is respectively connected to the emitter and the collector of the power transistor; wherein, in the above structure, the circuit peak absorption module includes a second resistor, a fourth capacitor and a second a diode, the second resistor and the fourth capacitor are connected in parallel, one end is connected to the first energy storage module, and the other end is connected to the second diode; the second diode output is connected to the transformer;
  • the input power detecting module includes a tenth resistor, the tenth resistor is connected to the drain of the MOS transistor, and the tenth resistor is further provided with a wire connected to the driving IC.
  • the invention Compared with the common remote control dimming and thyristor dimming, the invention has the beneficial effects of eliminating the remote control for remote control dimming, which makes it widely applicable to darkening corridors and toilets at night. , office halls, parking lots, or the use of lights in public buildings such as hospitals, schools, trains, and bus stops in the middle of the night.
  • the LED light group or driving circuit of the present invention to drive LEDs, only the wall switch is required. Switching once, and then completing the fast turn-off wall switch action within the time determined by the capacitance parameter of the switching frequency setting module, you can dim the light to multiple working states of different brightness.
  • the drive circuit has a high power factor, and has a high power factor of more than 0.90 in four-stage dimming, and a high efficiency of over 80%. Since the discharge resistor is not required, that is, the work efficiency is improved, and the use is more convenient and environmentally friendly. Enter the electroless capacitor without worrying about the life of the electrolytic capacitor. No constant optocoupler is required to output a constant current.
  • the circuit tube is step-by-step, low cost and easy to produce.
  • FIG. 2 is a circuit diagram of a portion of a driving circuit of a specific embodiment of the present invention.
  • FIG. 3 is a partial circuit diagram of an LED group of a specific embodiment of the present invention. detailed description
  • the present invention relates to a switching dimming LED driving circuit, which comprises a fuse, a rectifier module, a filtering module, a first energy storage module, a startup module, a voltage stabilization filter module, a circuit peak absorption module, and a second energy storage device.
  • the utility input fuse, the fuse, the rectifier module, the filter module and the first energy storage module are sequentially connected; the first connection start module of the first energy storage module, the startup module is connected with the voltage stabilization filter module, and the voltage stabilization filter module is connected and driven.
  • the first energy storage module is connected to the circuit peak absorption module, the circuit peak absorption module is connected to the second energy storage module, and the second energy storage module is connected to the driving IC;
  • the driving IC is connected to the driving module through the PWM output, and the driving module is connected to the MOS
  • the tube and the MOS tube are connected to the power detecting module, the input power detecting module is connected to the driving IC, and the other circuit is connected to the transformer;
  • the transformer is connected to the voltage stabilizing filter module, the transformer output is connected to the isolated rectifying and filtering module, and the isolated rectifying and filtering module is output connected.
  • the switching frequency setting module is connected to the driving IC.
  • the isolated rectification filter module of the present invention includes a sixth diode for isolating rectification and an electrolytic capacitor.
  • the voltage stabilizing filter module of the present invention includes an eighth resistor, a Zener diode, a voltage stabilizing capacitor, a power transistor, and a filter capacitor; the eighth resistor input is connected to the startup module, and the eighth resistor output is connected to the power.
  • the triode base level, the other circuit is connected to the stabilizing diode connected in parallel with the voltage stabilizing capacitor; the power triode emitter input is connected to the driving IC, and the collector is connected to the transformer; respectively, the emitter and the collector of the power transistor are respectively connected to the ground Filter capacitor.
  • the circuit peak absorbing module of the present invention includes a second resistor, a fourth capacitor, and a second diode.
  • the second resistor is connected in parallel with the fourth capacitor, and the first end is connected to the first energy storage module.
  • One end is connected to the second diode; and the second diode output is connected to the transformer.
  • the input power detecting module of the present invention includes a tenth resistor, the tenth resistor is connected to the drain of the MOS transistor, and the tenth resistor is further provided with a wire connected to the driving IC.
  • the fuse is configured to blow the protection circuit when the current is too high.
  • the circuit fails or In the case of an abnormality, as the current continues to rise, the increased current may damage some important components in the circuit, and may also burn the circuit. If a fuse is placed in the circuit, then the fuse will cut off the current when the current abnormally rises to a certain height, thereby protecting the circuit.
  • the module is set, the circuit current can be abnormally raised to a certain height. The self-fuse cuts off the current, thereby protecting the circuit, and the whole circuit has a good safety.
  • the rectifier module is configured to convert the AC voltage into a DC voltage, and the module can be set to be connected to the AC power grid and operated under the required DC voltage after being converted.
  • the filtering module is configured to remove the pulsating AC component in the DC voltage and make it a smooth DC voltage.
  • the module can be set to make the DC power smoother and the circuit works stably.
  • the first energy storage module is configured to release the stored energy to smooth the voltage outputted to the load when the input voltage is lowered, and the module is set to stabilize the circuit and reduce the output voltage variation.
  • the startup module is configured to provide a startup voltage when the circuit starts to work, and the module is set to provide a normal working voltage to the driver IC when the utility power is newly connected, so that the circuit works.
  • the voltage stabilizing filter module is used to provide a stable DC working voltage required for the driving IC.
  • the module can be set to make the DC voltage smoother, reduce the interference in the circuit, and the circuit works stably.
  • the circuit spike absorbing module is configured to absorb the spike voltage and current generated in the circuit, and the module is set to ensure the reliability of the circuit operation, and the protection power MOS tube is not damaged by the spike voltage.
  • the second energy storage module is configured to continue to supply power to the driving IC when the mains is disconnected to maintain its operation for a short period of time.
  • the module is set to enable the internal IC counter register to remain active when the switch is powered off.
  • the driving IC is configured to output different control signals to the driving module according to the switching frequency interval and the number of switching on and off according to the switching frequency interval, and the setting of the module can change the driving capability of the IC to the power MOS transistor, thereby changing the working power.
  • the output voltage changes accordingly.
  • the switching frequency setting module is configured to set a time frequency of an opening and closing interval of the external switch, and setting the module can change the working frequency in the circuit, and the frequency dithering can reduce the circuit dry Disturb.
  • the input power detecting module is configured to feed back the output voltage of the MOS tube to the driving IC, and the module is set to make the circuit have a good constant current function.
  • the driving module is configured to receive a driving IC control signal to drive the MOS tube to work, and the module is configured to enable the circuit to output different PWM signals to achieve different purposes of outputting different powers.
  • the MOS transistor is configured to output a corresponding adjusted output power according to a driving module driving output, and the module is configured to enable the circuit to adjust the power level.
  • the transformer is used for power transmission, voltage conversion and insulation isolation between the MOS tube and the driving external LED.
  • the module is arranged to enable circuit conversion, high and low voltage isolation.
  • the isolating rectification filter module is configured to rectify and filter the output of the adjusted voltage to drive the external LED, and the module is configured to enable the LED to have a normal working DC voltage.
  • the invention further relates to an LED lamp set comprising an LED group and a switching dimming circuit.
  • the driving circuit comprises a fuse, a rectifying module, a filtering module, a first energy storage module, a starting module, a voltage stabilizing filter module, a circuit peak absorbing module, a second energy storage module, a driving IC, a switching frequency setting module, an input power detecting module, and a driving Module, MOS tube, transformer and isolation rectification filter module;
  • the mains input fuse, the fuse, the rectifier module, the filter module and the first energy storage module are sequentially connected; the first energy storage module is connected to the startup module, the startup module is connected to the voltage stabilization filter module, and the voltage stabilization filter module is connected to the driving IC.
  • the driving IC is connected to the driving module through the PWM output, the driving module is connected to the MOS tube, the MOS tube is connected to the power detecting module, the input power detecting module is connected to the driving IC, and the second circuit is connected to the second energy storage module and the second energy storage module.
  • the third circuit is connected to the transformer; the transformer is connected to the voltage stabilizing filter module, the transformer output is connected to the isolated rectifying and filtering module, the output of the isolated rectifying and filtering module is connected to the external LED lamp; the switching frequency setting module is connected to the driving IC; The MOS tube and the first energy storage module interval setting module are connected to the driving IC.
  • the fuse is configured to blow the protection circuit when the current is too high
  • the rectifier module is configured to convert an alternating current voltage into a direct current voltage
  • the filtering module is configured to remove a pulsating AC component in the DC voltage and make it flat Sliding DC voltage;
  • the first energy storage module is configured to release the energy storage to make the voltage output to the load smooth when the input voltage is lowered;
  • the startup module is configured to provide a startup voltage when the circuit starts to work
  • the voltage stabilizing filter module is configured to provide a required DC working voltage for the driving IC
  • the circuit peak absorbing module is configured to absorb a spike voltage and current generated in the circuit; and the second energy storage module is configured to continue to supply power to the driving IC when the utility power is disconnected, so as to temporarily maintain its operation;
  • the driving IC is configured to output different control signals to the driving module through the PWM according to the switching frequency interval and the number of on and off switching times;
  • the switching frequency setting module is configured to set a time frequency of an opening and closing interval of the external switch
  • the input power detecting module is configured to collect an output voltage of the MOS tube and feed back to the driving
  • the driving module is configured to receive a driving IC control signal to drive the MOS tube to work; the MOS tube is configured to output a corresponding adjusted output power according to the driving module driving output; the transformer is used for power between the MOS tube and the driving external LED Transmission, voltage conversion and insulation isolation;
  • the isolated rectification filtering module is configured to rectify and filter the output of the adjusted voltage to drive the external LED.
  • the isolated rectification filter module of the present invention includes a sixth diode for isolating rectification and an electrolytic capacitor.
  • the voltage stabilizing filter module of the present invention includes an eighth resistor, a Zener diode, a voltage stabilizing capacitor, a power transistor, and a filter capacitor; the eighth resistor input is connected to the startup module, and the eighth resistor output is connected to the power.
  • the triode base level, the other circuit is connected to the stabilizing diode connected in parallel with the voltage stabilizing capacitor; the power triode emitter input is connected to the driving IC, and the collector is connected to the transformer; respectively, the emitter and the collector of the power transistor are respectively connected to the ground Filter capacitor.
  • the circuit peak absorbing module of the present invention includes a second resistor, a fourth capacitor, and a second diode. The second resistor is connected in parallel with the fourth capacitor, and the first end is connected to the first energy storage module. One end is connected to the second diode; and the second diode output is connected to the transformer.
  • the input power detecting module of the present invention includes a tenth resistor, the tenth resistor is connected to the drain of the MOS transistor, and the tenth resistor is further provided with a wire connected to the driving IC.
  • FIG. 2-3 is a circuit diagram of a specific embodiment of the present invention, wherein the switch controls the mains access to the bridge D1 of the rectifier module after the fuse F1 is rectified, and then converts to the DC high voltage after filtering the two capacitors C2 and C3 of the filter module.
  • the energy storage inductance L1 of the first energy storage module is a circuit diagram of a specific embodiment of the present invention, wherein the switch controls the mains access to the bridge D1 of the rectifier module after the fuse F1 is rectified, and then converts to the DC high voltage after filtering the two capacitors C2 and C3 of the filter module.
  • the energy storage inductance L1 of the first energy storage module is a circuit diagram of a specific embodiment of the present invention, wherein the switch controls the mains access to the bridge D1 of the rectifier module after the fuse F1 is rectified, and then converts to the DC high voltage after filtering the two capacitors C2 and C3 of the filter module.
  • the energy storage inductor L1 of the first energy storage module is connected to a starting module consisting of a series of resistors R6 and R7 for providing a starting voltage when the system is just turned on.
  • the startup module is connected to the voltage regulator filter module to provide a stable DC working voltage for the IC 10 pin.
  • the voltage regulator filter module is composed of an eighth resistor R8, a Zener diode D4, a voltage stabilizing capacitor C5, a power transistor Q5, and a filter capacitor C31.
  • the capacitor C32 is composed, wherein the eighth resistor R8 is connected to the start-up module, the eighth resistor R8 is connected to the power transistor Q5 base stage, and the other is connected to the parallel-grounded Zener diode D4 and the voltage regulator capacitor C5; and the power transistor Q5 is emitted.
  • the pole input is connected to the driving IC U1 and the collector is connected to the transformer ER2510.
  • the filter capacitors C31 and C32 are respectively connected to the emitter and the collector of the power transistor Q5, thereby providing a stable DC operating voltage for the pin 10 of the driving IC U1. .
  • the driving IC U1 is driven by the 9-pin output PWM, and the MOS tube Q4 is driven by the resistor R9 and the diode D3 connected in parallel by the driving module, and the driving IC U1 is mobilized by the built-in dimming function to make the corresponding driving output, so that the MOS tube Q4 reaches Control the power supply and adjust the power.
  • the 5 pin of the driver IC U1 is CAL calibration, and the 3-pin FBK feedback input.
  • the 2 pin is CT control, and the capacitor C36 of the switching frequency setting module is connected to it to set the switching frequency.
  • the MOS transistor Q4 drain is connected to the power detecting module, and includes a tenth resistor R10.
  • the tenth resistor R10 is connected to the drain of the MOS transistor Q4, and the tenth resistor 10 is further provided with a power of the wire input driving IC U1.
  • the detecting pin 8 is used to enable the driving IC U1 to detect the voltage on the R10 and then perform internal analysis processing.
  • the second path of the drain of the MOS transistor Q4 is connected to the second energy storage module, and the second energy storage module includes a storage capacitor C35.
  • the input of the storage capacitor C35 is connected to the internal power supply voltage output pin 1 of the driving IC U1 for When the mains is disconnected instantaneously, the power stored on the storage capacitor C35 continues to supply power to the 6 pin.
  • the internal counter of the driver IC U1 remains active.
  • the switch must be set to the time corresponding to the capacitor C36 of the shutdown frequency setting (eg 1.5). Valid within seconds). Connected to the driver IC, the third way to connect the transformer;
  • the third terminal of the MOS transistor Q4 is connected to the transformer ER2510, and the sixth rectifier D6 and the electrolytic capacitors C9 and C15 for isolating and rectifying the isolated rectifying filter module of the other end of the MOS transistor are isolated and finally connected.
  • a circuit peak absorption module composed of a fourth capacitor C4, a second resistor R2, and a second diode D2 is further connected between the MOS transistor Q4 and the inductor L1 of the first energy storage module for absorbing the peak voltage and current.
  • the second resistor R2 is connected in parallel with the fourth capacitor C4, and is connected to the storage inductor L1, the output is connected to the second diode D2, and the second diode D2 is connected to the inductor L1 of the first energy storage module and the transformer ER2510.
  • the driver IC model is GM6182, which is a high power factor, constant current offline LED lamp driver IC. It has a built-in tube for easy dimming. Counting the number of wall switches and changing the light output to darken, changing the existing lighting fixtures and dimming functions to replace the inconvenience of a traditional remote control solution or the installation of a TRIAC dimmer solution.
  • the GM6182 should switch the wall switch for less than 1.5 seconds to complete the switching action. It is observed that most people will switch wall switches in about 0.2 to 0.8 seconds. Easy to dimming: Full power ⁇ 60 % ⁇ 40 % ⁇ 20 % , the switch will return to full power again. To go directly from any power level to fully off, just the original wall switch to the OFF position. For example, an 8W LED bulb, the power corresponding to dimming is: 8W/5W/4W/2W.
  • the present invention has the beneficial effect of eliminating the remote control for remote control dimming, which makes it widely applicable to nighttime darkening corridors, restrooms, office halls, parking lots, or late at night.
  • the speed of the fast-off wall switch is completed within the time determined by the parameter, and the light can be dimmed to 60% brightness.
  • the second switch can be reached 40% brightness, the third time to 20% brightness, once again switching back to full light state.
  • the driver IC used in this circuit has a high power factor, which exceeds in four-stage dimming.
  • the discharge resistor is not used to improve work efficiency, and the use is environmentally friendly. Enter the electroless capacitor without worrying about the lifetime of the electrolytic capacitor. No constant optocoupler is required to output a constant current.
  • the circuit tube is clear, low cost and easy to produce.

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Abstract

一种切换调光LED驱动电路及LED灯组，它包括保险丝、整流模块、滤波模块、第一储能模块、启动模块、稳压滤波模块、电路尖峰吸收模块、第二储能模块、驱动IC、开关频率设置模块、输入功率检测模块、驱动模块、MOS管、变压器及隔离整流滤波模块。本发明驱动电路具有较高的功率因数，在四段调光中皆有超过0.90的高功率因数，超过80%的高效率。由于不需使用泄流电阻，即提高工作效率，使用更为便捷环保省电。而输入无电解电容，不用担心电解电容所带来的寿命问题。此外无需光耦，输出恒流，电路简捷明了，成本低廉，便于生产。

Description

切换调光 LED驱动电路及 LED灯组 技术领域
本发明涉及 LED照明领域， 尤其是指一种切换调光 LED驱动电路 及 LED灯组。 背景技术
进入 21 世纪， 环保问题已成为一个世界性的问题， 各国都在寻找 高效节能的环保产品， 而 LED灯拥有转换效率高、发热量低、使用耐久 等优点， 被誉为 21世纪的绿色照明产品， 随着 LED效率的不断提高及 价格的下降， LED的应用领域也越来越广。 最近几年， LED道路照明技 术得到了迅速发展。应用也日益广泛。然而现有 LED的驱动电路大多为 直接驱动， 难以完成对 LED灯组的亮度调节驱动， 而少数的， 例如传统 摇控方案或安装 TRIAC调光器方案有存在诸多不便。 其中摇控调光方 案必须使用调控器才能调光， 存在缺陷： 1、 摇控器需安装电池使用， 而当电池电量低时， 摇控的距离也随着变近。 2、 摇控有一定的方向性。 3、 当摇控器损坏或遗失， 将不能进行调光。 而安装 TRIAC调光器， 其 实质是采用可控硅进行调光， 又因其调光原理是通过切割交流电正弦波 的方式， 破坏了交流正弦波的波形， 从而降低了功率因数， 也加大了谐 波系数。在线路上产生严重的干扰信号。可控硅调光在低负载时不稳定， 需加上一个泄流电阻， 增加了整机的功率。 另外输入端的 LC滤波器会 使可控硅产生振荡，对于白炽灯人眼看不出，但对于 LED就会产生音频 噪声和闪烁。 发明内容
本发明的目的在于克服了上述缺陷， 提供一种可安全方便完成亮度 调节的 LED驱动电路及 LED灯组。
本发明的目的是这样实现的： 一种切换调光 LED驱动电路， 它包括 保险丝、 整流模块、 滤波模块、 第一储能模块、 启动模块、 稳压滤波模 块、 电路尖峰吸收模块、 第二储能模块、 驱动 IC、 开关频率设置模块、 输入功率检测模块、 驱动模块、 MOS管、 变压器及隔离整流滤波模块； 所述市电输入保险丝， 保险丝、 整流模块、 滤波模块与第一储能模 块依次相连； 所述第一储能模块连接启动模块、 启动模块连接稳压滤波 模块、 稳压滤波模块连接驱动 IC, 所述驱动 IC通过 PWM输出连接驱 动模块、驱动模块连接 MOS管、 MOS管的一路连接输入功率检测模块、 输入功率检测模块接入驱动 IC, MOS管第二路连接第二储能模块、 第 二储能模块接入驱动 IC, MOS管第三路连接变压器； 所述变压器一路 连接稳压滤波模块， 另一路连接隔离整流滤波模块， 隔离整流滤波模块 输出连接外部 LED灯； 所述开关频率设置模块连接驱动 IC; 所述 MOS 管与第一储能模块间还连接有电路尖峰吸收模块；
所述保险丝， 用于在电流过高时熔断保护电路；
所述整流模块， 用于将交流电压转换为直流电压；
所述滤波模块， 用于去掉直流电压中的脉动交流成分， 使之成为平 滑的直流电压；
所述第一储能模块， 用于当输入电压降低时， 释放储能使得输出至 负载的电压平滑；
所述启动模块， 用于在电路开始工作时提供启动电压；
所述稳压滤波模块， 用于为驱动 IC提供所需的稳定的直流工作电 压；
所述电路尖峰吸收模块， 用于吸收电路中产生的尖峰电压和电流； 所述第二储能模块， 用于当市电断开时继续给驱动 IC供电， 以短 暂维持其工作；
所述驱动 IC,用于根据开关频率间隔及开和关通断次数相应的通过 PWM输出不同控制信号至驱动模块；
所述开关频率设置模块， 用于设置外部开关的开和关间隔的时间频 率；
所述输入功率检测模块， 用于采集 MOS管的输出电压反馈至驱动
IC;
所述驱动模块， 用于接受驱动 IC控制信号驱动 MOS管工作； 所述 MOS管， 用于根据驱动模块驱动输出对应调整的输出功率； 所述变压器， 用于 MOS管至驱动外部 LED间的功率传送、 电压变 换和绝缘隔离；
所述隔离整流滤波模块， 用于整流滤波后输出经调整的电压驱动外 部 LED。
上述结构中， 所述隔离整流滤波模块包括一电解电容及用于隔离整 流的第六二极管；
上述结构中， 所述稳压滤波模块包括第八电阻、 稳压二极管、 稳压 电容、 功率三极管及滤波电容； 所述第八电阻输入连接启动模块， 第八 电阻输出一路连接至功率三极管基级， 另一路与并联接地的稳压二极管 与稳压电容相连； 所述功率三极管发射极输入连接驱动 IC, 集电极连接 变压器； 于功率三极管的发射极、 集电极上分别对地连接有滤波电容； 上述结构中， 所述电路尖峰吸收模块包括第二电阻、 第四电容及第 二二极管， 所述第二电阻与第四电容并联后一端连接第一储能模块， 另 一端连接第二二极管； 所述第二二极管输出连接变压器；
所述输入功率检测模块包括第十电阻， 所述第十电阻连接于 MOS 管漏极上， 第十电阻还设有导线与驱动 IC相连。
本发明还涉及一种 LED灯组， 它包括 LED组及切换调光电路； 所 述驱动电路包括保险丝、 整流模块、 滤波模块、 第一储能模块、 启动模 块、 稳压滤波模块、 电路尖峰吸收模块、 第二储能模块、 驱动 IC、 开关 频率设置模块、 输入功率检测模块、 驱动模块、 MOS管、 变压器及隔离 整流滤波模块；
所述市电输入保险丝， 保险丝、 整流模块、 滤波模块与第一储能模 块依次相连； 所述第一储能模块连接启动模块、 启动模块连接稳压滤波 模块、 稳压滤波模块连接驱动 IC, 所述驱动 IC通过 PWM输出连接驱 动模块、 驱动模块连接 MOS管、 MOS管一路连接功率检测模块、 输入 功率检测模块接入驱动 IC, 第二路连接第二储能模块、 第二储能模块接 入驱动 IC, 第三路连接变压器； 所述变压器一路连接稳压滤波模块， 所 LED灯； 所述开关频率设置模块连接驱动 IC; 所述 MOS管与第一储能 模块间率设置模块连接驱动 IC;
所述保险丝， 用于在电流过高时熔断保护电路；
所述整流模块， 用于将交流电压转换为直流电压；
所述滤波模块， 用于去掉直流电压中的脉动交流成分， 使之成为平 滑的直流电压；
所述第一储能模块， 用于当输入电压降低时， 释放储能使得输出至 负载的电压平滑；
所述启动模块， 用于在电路开始工作时提供启动电压；
所述稳压滤波模块， 用于为驱动 IC提供所需的稳定的直流工作电 压；
所述电路尖峰吸收模块， 用于吸收电路中产生的尖峰电压和电流； 所述第二储能模块， 用于当市电断开时继续给驱动 IC供电， 以短 暂维持其工作；
所述驱动 IC,用于根据开关频率间隔及开和关通断次数相应的通过 PWM输出不同控制信号至驱动模块；
所述开关频率设置模块， 用于设置外部开关的开和关间隔的时间频 率；
所述输入功率检测模块， 用于采集 MOS管的输出电压反馈至驱动
IC;
所述驱动模块， 用于接受驱动 IC控制信号驱动 MOS管工作； 所述 MOS管， 用于根据驱动模块驱动输出对应调整的输出功率； 所述变压器， 用于 MOS管至驱动外部 LED间的功率传送、 电压变 换和绝缘隔离；
所述隔离整流滤波模块， 用于整流滤波后输出经调整的电压驱动外 部 LED;
上述结构中， 所述隔离整流滤波模块包括一电解电容及用于隔离整 流的第六二极管；
上述结构中， 所述稳压滤波模块包括第八电阻、 稳压二极管、 稳压 电容、 功率三极管及滤波电容； 所述第八电阻输入连接启动模块， 第八 电阻输出一路连接至功率三极管基级， 另一路与并联接地的稳压二极管 与稳压电容相连； 所述功率三极管发射极输入连接驱动 IC, 集电极连接 变压器； 于功率三极管的发射极、 集电极上分别对地连接有滤波电容； 上述结构中， 所述电路尖峰吸收模块包括第二电阻、 第四电容及第 二二极管， 所述第二电阻与第四电容并联后一端连接第一储能模块， 另 一端连接第二二极管； 所述第二二极管输出连接变压器；
上述结构中， 所述输入功率检测模块包括第十电阻， 所述第十电阻 连接于 MOS管漏极上， 第十电阻还设有导线与驱动 IC相连。
相比于常见的摇控调光和可控硅调光， 本发明的有益效果在于省掉 了摇控调光所用的摇控器， 这就使得其可广泛应用于夜间想调暗走廊、 洗手间、 办公大厅、 停车场， 或是深夜时调降公共建筑物， 如医院、 学 校、火车和公车站等场所的灯光使用，采用本发明 LED灯组或驱动电路 驱动 LED时，只需将墙壁开关切换一次， 而后在开关频率设置模块的电 容参数决定的时间内完成快速关-开墙壁开关的动作，就可以调暗灯光至 多档不同亮度的工作状态。 此外本驱动电路具有有较高的功率因数， 在 四段调光中皆有超过 0.90的高功率因数， 超过 80%的高效率。 由于不需 使用泄流电阻， 即提高工作效率， 使用更为便捷环保省电。 输入无电解 电容， 不用担心电解电容所带来的寿命问题。 无需光耦， 输出恒流。 电 路筒捷明了， 成本低廉， 便于生产。 附图说明
下面结合附图详述本发明的具体结构：
图 1为本发明的电路原理框图；
图 2为本发明的具体实施例驱动电路部分电路图；
图 3为本发明的具体实施例 LED组部分电路图。 具体实施方式
为详细说明本发明的技术内容、 构造特征、 所实现目的及效果， 以 下结合实施方式并配合附图详予说明。 请参阅图 1 , 本发明涉及一种切换调光 LED驱动电路， 它包括保险 丝、 整流模块、 滤波模块、 第一储能模块、 启动模块、 稳压滤波模块、 电路尖峰吸收模块、 第二储能模块、 驱动 IC、 开关频率设置模块、 输入 功率检测模块、 驱动模块、 MOS管、 变压器及隔离整流滤波模块。
其中， 市电输入保险丝， 保险丝、 整流模块、 滤波模块与第一储能 模块依次相连； 所述第一储能模块的一路连接启动模块、 启动模块连接 稳压滤波模块、稳压滤波模块连接驱动 IC, 第一储能模块另一路连接电 路尖峰吸收模块、 电路尖峰吸收模块连接第二储能模块、 第二储能模块 连接驱动 IC; 所述驱动 IC通过 PWM输出连接驱动模块、 驱动模块连 接 MOS管、 MOS管一路连接功率检测模块、 输入功率检测模块接入驱 动 IC, 另一路连接变压器； 所述变压器一路连接稳压滤波模块， 所述变 压器输出连接隔离整流滤波模块， 隔离整流滤波模块输出连接外部 LED 灯； 所述开关频率设置模块连接驱动 IC。
作为一实施例， 本发明的隔离整流滤波模块包括一用于隔离整流的 第六二极管及电解电容。
作为另一实施例， 本发明的稳压滤波模块包括第八电阻、 稳压二极 管、 稳压电容、 功率三极管及滤波电容； 所述第八电阻输入连接启动模 块， 第八电阻输出一路连接至功率三极管基级， 另一路与并联接地的稳 压二极管与稳压电容相连； 所述功率三极管发射极输入连接驱动 IC, 集 电极连接变压器； 于功率三极管的发射极、 集电极上分别对地连接有滤 波电容。
作为又一实施例， 本发明的所述电路尖峰吸收模块包括第二电阻、 第四电容及第二二极管， 所述第二电阻与第四电容并联后一端连接第一 储能模块， 另一端连接第二二极管； 所述第二二极管输出连接变压器。
作为再一实施例， 本发明的所述输入功率检测模块包括第十电阻， 所述第十电阻连接于 MOS管漏极上， 第十电阻还设有导线与驱动 IC相 连。
上述模块的相互作用关系及功能如下：
所述保险丝， 用于在电流过高时熔断保护电路。 当电路发生故障或 异常时， 伴随着电流不断升高， 升高的电流有可能损坏电路中的某些重 要器件， 也有可能烧毁电路。 若电路中安置了保险丝， 那么， 保险丝就 会在电流异常升高到一定高度的时候， 自身熔断切断电流， 从而起到保 护电路目的， 设置该模块可使得电路电流异常升高到一定高度的时候， 自身熔断切断电流， 从而起到保护电路的作用， 整个电路拥有一个较好 的安全性。
所述整流模块， 用于将交流电压转换为直流电压， 设置该模块可使 得为本机可接入交流电网中， 经变换后工作在所需的直流电压下。
所述滤波模块， 用于去掉直流电压中的脉动交流成分， 使之成为平 滑的直流电压， 设置该模块可使得直流电更加平滑， 电路工作稳定。
所述第一储能模块， 用于当输入电压降低时， 释放储能使得输出至 负载的电压平滑，设置该模块可使得电路工作稳定，减小输出电压变动。
所述启动模块， 用于在电路开始工作时提供启动电压， 设置该模块 可使得市电刚接入时， 给驱动 IC提供一个正常的工作电压， 使电路工 作起来。
所述稳压滤波模块， 用于为驱动 IC提供所需的稳定的直流工作电 压， 设置该模块可使得直流电压更加平滑， 减小电路中的干扰， 电路工 作稳定。
所述电路尖峰吸收模块， 用于吸收电路中产生的尖峰电压和电流， 设置该模块可使得电路工作的可靠性， 保护功率 MOS管不被尖峰电压 损坏。
所述第二储能模块， 用于当市电断开时继续给驱动 IC供电， 以短 暂维持其工作， 设置该模块可使得在开关断电时能使驱动 IC 内部计数 器寄存器保持工作。
所述驱动 IC,用于根据开关频率间隔及开和关通断次数相应的通过 PWM输出不同控制信号至驱动模块，设置该模块可使得改变 IC对功率 MOS管的驱动能力， 从而改变工作功率， 输出电压随之改变。
所述开关频率设置模块， 用于设置外部开关的开和关间隔的时间频 率， 设置该模块可使得电路中的工作频率随着改变， 抖频可降低电路干 扰。
所述输入功率检测模块， 用于采集 MOS管的输出电压反馈至驱动 IC, 设置该模块可使得电路有很好的恒流作用。
所述驱动模块， 用于接受驱动 IC控制信号驱动 MOS管工作， 设置 该模块可使得电路输出不同的 PWM信号， 实现输出不同功率的目的。
所述 MOS管， 用于根据驱动模块驱动输出对应调整的输出功率， 设置该模块可使得电路调整功率大小。
所述变压器， 用于 MOS管至驱动外部 LED间的功率传送、 电压变 换和绝缘隔离， 设置该模块可使得电路的转换， 高低压隔离。
所述隔离整流滤波模块， 用于整流滤波后输出经调整的电压驱动外 部 LED, 设置该模块可使得 LED有正常的工作直流电压。 本发明还涉及一种 LED灯组， 它包括 LED组及切换调光电路。 驱动电路包括保险丝、 整流模块、 滤波模块、 第一储能模块、 启动 模块、 稳压滤波模块、 电路尖峰吸收模块、 第二储能模块、 驱动 IC、 开 关频率设置模块、 输入功率检测模块、 驱动模块、 MOS管、 变压器及隔 离整流滤波模块；
所述市电输入保险丝， 保险丝、 整流模块、 滤波模块与第一储能模 块依次相连； 所述第一储能模块连接启动模块、 启动模块连接稳压滤波 模块、 稳压滤波模块连接驱动 IC, 所述驱动 IC通过 PWM输出连接驱 动模块、 驱动模块连接 MOS管、 MOS管一路连接功率检测模块、 输入 功率检测模块接入驱动 IC, 第二路连接第二储能模块、 第二储能模块接 入驱动 IC, 第三路连接变压器； 所述变压器一路连接稳压滤波模块， 所 述变压器输出连接隔离整流滤波模块， 隔离整流滤波模块输出连接外部 LED灯； 所述开关频率设置模块连接驱动 IC; 所述 MOS管与第一储能 模块间率设置模块连接驱动 IC。
所述保险丝， 用于在电流过高时熔断保护电路；
所述整流模块， 用于将交流电压转换为直流电压；
所述滤波模块， 用于去掉直流电压中的脉动交流成分， 使之成为平 滑的直流电压；
所述第一储能模块， 用于当输入电压降低时， 释放储能使得输出至 负载的电压平滑；
所述启动模块， 用于在电路开始工作时提供启动电压；
所述稳压滤波模块， 用于为驱动 IC提供所需的稳定的直流工作电 压；
所述电路尖峰吸收模块， 用于吸收电路中产生的尖峰电压和电流； 所述第二储能模块， 用于当市电断开时继续给驱动 IC供电， 以短 暂维持其工作；
所述驱动 IC,用于根据开关频率间隔及开和关通断次数相应的通过 PWM输出不同控制信号至驱动模块；
所述开关频率设置模块， 用于设置外部开关的开和关间隔的时间频 率；
所述输入功率检测模块， 用于采集 MOS管的输出电压反馈至驱动
IC;
所述驱动模块， 用于接受驱动 IC控制信号驱动 MOS管工作； 所述 MOS管， 用于根据驱动模块驱动输出对应调整的输出功率； 所述变压器， 用于 MOS管至驱动外部 LED间的功率传送、 电压变 换和绝缘隔离；
所述隔离整流滤波模块， 用于整流滤波后输出经调整的电压驱动外 部 LED。
作为一实施例， 本发明的隔离整流滤波模块包括一用于隔离整流的 第六二极管及电解电容。
作为另一实施例， 本发明的稳压滤波模块包括第八电阻、 稳压二极 管、 稳压电容、 功率三极管及滤波电容； 所述第八电阻输入连接启动模 块， 第八电阻输出一路连接至功率三极管基级， 另一路与并联接地的稳 压二极管与稳压电容相连； 所述功率三极管发射极输入连接驱动 IC, 集 电极连接变压器； 于功率三极管的发射极、 集电极上分别对地连接有滤 波电容。 作为又一实施例， 本发明的所述电路尖峰吸收模块包括第二电阻、 第四电容及第二二极管， 所述第二电阻与第四电容并联后一端连接第一 储能模块， 另一端连接第二二极管； 所述第二二极管输出连接变压器。
作为再一实施例， 本发明的所述输入功率检测模块包括第十电阻， 所述第十电阻连接于 MOS管漏极上， 第十电阻还设有导线与驱动 IC相 连。
如图 2-3为本发明具体实施例电路图， 其中开关控制市电接入经保 险丝 F1后整流模块的桥堆 D1整流， 而后在滤波模块的两电容 C2、 C3 滤波后转为直流高压， 经第一储能模块的储能电感 Ll。
第一储能模块的储能电感 L1一路连接由电阻 R6、R7串联组成的启 动模块， 用于在系统刚开机时提供一个启动电压。 启动模块连接稳压滤 波模块， 为 IC的 10脚提供稳定的直流工作电压， 所述稳压滤波模块由 第八电阻 R8、 稳压二极管 D4、 稳压电容 C5、 功率三极管 Q5及滤波电 容 C31、 C32组成， 其中第八电阻 R8输入连接启动模块， 第八电阻 R8 输出一路连接至功率三极管 Q5基级， 另一路与并联接地的稳压二极管 D4与稳压电容 C5相连；而功率三极管 Q5的发射极输入连接驱动 IC U1 , 集电极连接变压器 ER2510; 于功率三极管 Q5的发射极、 集电极上分别 对地连接有滤波电容 C31、 C32, 从而可为驱动 IC U1的 10脚提供稳定 的直流工作电压。
所述驱动 IC U1通过 9脚输出 PWM驱动， 经驱动模块并联的电阻 R9、 二极管 D3驱动 MOS管 Q4 , 驱动 IC U1通过内置的调光功能调 动 9脚作相应的驱动输出，从而 MOS管 Q4达到控制电源、调整功率的 目的。 此外， 驱动 IC U1的 5脚为 CAL校准， 3脚 FBK反馈输入。 2 脚为 CT控制， 其上连接有开关频率设置模块的电容 C36, 用于设置开 关频率。
而 MOS管 Q4漏极的一路连接功率检测模块，它包括第十电阻 R10, 所述第十电阻 R10连接于 MOS管 Q4的漏极上， 第十电阻 10还设有导 线输入驱动 IC U1的功率检测脚 8, 用于让驱动 IC U1可检测 R10上的 电压， 而后在内部作分析处理。 MOS管 Q4漏极的第二路连接第二储能模块、 第二储能模块包括一 储能电容 C35 , 储能电容 C35输入连接于驱动 IC U1其内部电源电压输 出脚 1脚上， 用于当市电瞬间断开时， 由储能电容 C35上储存的电量继 续给 6脚供电， 驱动 IC U1内部计数器寄存器保持工作， 关闭开关需在 关频率设置模块的电容 C36对应的时间 （如常见 1.5秒） 内有效。 与接 入驱动 IC, 第三路连接变压器；
MOS管 Q4源极的第三路连接变压器 ER2510, 经其隔离后耦合之 另一端的隔离整流滤波模块的一用于隔离整流的第六二极管 D6及电解 电容 C9、 C15 , 并最终驱动连接在引座 J1上的 LED灯组。
而在 MOS管 Q4与第一储能模块的电感 L1间还连接有由第四电容 C4、 第二电阻 R2、 第二二极管 D2组成电路尖峰吸收模块， 用于吸收尖 峰电压和电流。 具体的， 第二电阻 R2与第四电容 C4并联后输入连接储 能电感 L1 , 输出连接第二二极管 D2, 第二二极 D2管输出连接第一储 能模块的电感 L1及变压器 ER2510。
实施例中， 所述驱动 IC型号为 GM6182, 它是一种高功率因数， 常 数当前离线 LED灯驱动 IC。 它有一个内置的筒易调光功能。 计数墙壁 开关切换的数量， 并相应地改变光输出亮暗， 改变现有的照明灯具与调 光功能， 以取代一个传统摇控方案或安装 TRIAC调光器方案的不便。 GM6182切换墙壁开关的时间应在小于 1.5秒完成切换动作。 据观察大 多数人会在 0.2 至 0.8 秒左右做墙壁开关切换。 筒易调光提供:全功率 \60 % \40 % \20 % , 切换将再次返回到全功率。 要直接从任意功率电平至 完全关闭， 只需原来的墙壁开关至 OFF位置。 比如一个 8W的 LED灯 泡， 调光对应的功率为： 8W/5W/4W/2W。
综上所述， 本发明的有益效果在于省掉了摇控调光所用的摇控器， 这就使得其可广泛应用于夜间想调暗走廊、 洗手间、 办公大厅、停车场， 或是深夜时调降公共建筑物， 如医院、 学校、 火车和公车站等场所的灯 光使用， 采用本发明 LED灯组或驱动电路驱动 LED时， 只需将墙壁开 关切换一次， 而后在开关频率设置模块的电容参数决定的时间内完成快 速关-开墙壁开关的动作，就可以调暗灯光至 60%亮度。第二次切换可至 40%亮度， 第三次则到 20%亮度， 再一次切换就会回到全亮状态。 要直 接从任一调光准位跳至全亮， 你只要在墙壁开关的关闭状态停留超过开 关频率设置模块设置的时间 （如通常为 1.5秒）之后再打开， 灯就会全 亮。若要直接从任一电力准位跳至全暗，只要将墙壁开关切到关闭状态。 本电路采用的驱动 IC具有有较高的功率因数， 在四段调光中皆有超过
0.90的高功率因数， 超过 80%的高效率。 另外， 不使用泄流电阻， 提高 工作效率， 使用便环保省电。 输入无电解电容， 不用担心电解电容所带 来的寿命问题。 无需光耦， 输出恒流。 电路筒捷明了， 成本低廉， 便于 生产。
此外以上所述仅为本发明的实施例， 并非因此限制本发明的专利范 围， 凡是利用本发明说明书及附图内容所作的等效结构或等效流程变 换， 或直接或间接运用在其他相关的技术领域， 均同理包括在本发明的 专利保护范围内。

Claims

权 利 要 求 书
1、 一种切换调光 LED驱动电路， 其特征在于： 它包括保险丝、 整 流模块、 滤波模块、 第一储能模块、 启动模块、 稳压滤波模块、 电路尖 峰吸收模块、 第二储能模块、 驱动 IC、 开关频率设置模块、 输入功率检 测模块、 驱动模块、 MOS管、 变压器及隔离整流滤波模块；
所述市电输入保险丝， 保险丝、 整流模块、 滤波模块与第一储能模 块依次相连； 所述第一储能模块连接启动模块、 启动模块连接稳压滤波 模块、 稳压滤波模块连接驱动 IC, 所述驱动 IC通过 PWM输出连接驱 动模块、驱动模块连接 MOS管、 MOS管的一路连接输入功率检测模块、 输入功率检测模块接入驱动 IC, MOS管第二路连接第二储能模块、 第 二储能模块接入驱动 IC， MOS管第三路连接变压器； 所述变压器一路 连接稳压滤波模块， 另一路连接隔离整流滤波模块， 隔离整流滤波模块 输出连接外部 LED灯； 所述开关频率设置模块连接驱动 IC; 所述 MOS 管与第一储能模块间还连接有电路尖峰吸收模块；
所述保险丝， 用于在电流过高时熔断保护电路；
所述整流模块， 用于将交流电压转换为直流电压；
所述滤波模块， 用于去掉直流电压中的脉动交流成分， 使之成为平 滑的直流电压；
所述第一储能模块， 用于当输入电压降低时， 释放储能使得输出至 负载的电压平滑；
所述启动模块， 用于在电路开始工作时提供启动电压；
所述稳压滤波模块， 用于为驱动 IC提供所需的稳定的直流工作电 压；
所述电路尖峰吸收模块， 用于吸收电路中产生的尖峰电压和电流； 所述第二储能模块， 用于当市电断开时继续给驱动 IC供电， 以短 暂维持其工作；
所述驱动 IC，用于根据开关频率间隔及开和关通断次数相应的通过 PWM输出不同控制信号至驱动模块；
所述开关频率设置模块， 用于设置外部开关的开和关间隔的时间频 率；
所述输入功率检测模块， 用于采集 MOS管的输出电压反馈至驱动
IC;
所述驱动模块， 用于接受驱动 IC控制信号驱动 MOS管工作； 所述 MOS管， 用于根据驱动模块驱动输出对应调整的输出功率； 所述变压器， 用于 MOS管至驱动外部 LED间的功率传送、 电压变 换和绝缘隔离；
所述隔离整流滤波模块， 用于整流滤波后输出经调整的电压驱动外 部 LED。
2、 如权利要求 1所述的切换调光 LED驱动电路， 其特征在于： 所 述隔离整流滤波模块包括一电解电容及用于隔离整流的第六二极管。
3、 如权利要求 1所述的切换调光 LED驱动电路， 其特征在于： 所 述稳压滤波模块包括第八电阻、 稳压二极管、 稳压电容、 功率三极管及 滤波电容； 所述第八电阻输入连接启动模块， 第八电阻输出一路连接至 功率三极管基级， 另一路与并联接地的稳压二极管与稳压电容相连； 所 述功率三极管发射极输入连接驱动 IC, 集电极连接变压器； 于功率三极 管的发射极、 集电极上分别对地连接有滤波电容。
4、 如权利要求 1所述的切换调光 LED驱动电路， 其特征在于： 所 述电路尖峰吸收模块包括第二电阻、 第四电容及第二二极管， 所述第二 电阻与第四电容并联后一端连接第一储能模块， 另一端连接第二二极 管； 所述第二二极管输出连接变压器。
5、 如权利要求 1所述的切换调光 LED驱动电路， 其特征在于： 所 述输入功率检测模块包括第十电阻， 所述第十电阻连接于 MOS管漏极 上， 第十电阻还设有导线与驱动 IC相连。
6、 一种 LED灯组， 其特征在于： 它包括 LED组及切换调光电路； 所述驱动电路包括保险丝、 整流模块、 滤波模块、 第一储能模块、 启动 模块、 稳压滤波模块、 电路尖峰吸收模块、 第二储能模块、 驱动 IC、 开 关频率设置模块、 输入功率检测模块、 驱动模块、 MOS管、 变压器及隔 所述市电输入保险丝， 保险丝、 整流模块、 滤波模块与第一储能模 块依次相连； 所述第一储能模块连接启动模块、 启动模块连接稳压滤波 模块、 稳压滤波模块连接驱动 IC, 所述驱动 IC通过 PWM输出连接驱 动模块、 驱动模块连接 MOS管、 MOS管一路连接功率检测模块、 输入 功率检测模块接入驱动 IC, 第二路连接第二储能模块、 第二储能模块接 入驱动 IC, 第三路连接变压器； 所述变压器一路连接稳压滤波模块， 所 述变压器输出连接隔离整流滤波模块， 隔离整流滤波模块输出连接外部
LED灯； 所述开关频率设置模块连接驱动 IC; 所述 MOS管与第一储能 模块间率设置模块连接驱动 IC;
所述保险丝， 用于在电流过高时熔断保护电路；
所述整流模块， 用于将交流电压转换为直流电压；
所述滤波模块， 用于去掉直流电压中的脉动交流成分， 使之成为平 滑的直流电压；
所述第一储能模块， 用于当输入电压降低时， 释放储能使得输出至 负载的电压平滑；
所述启动模块， 用于在电路开始工作时提供启动电压；
所述稳压滤波模块， 用于为驱动 IC提供所需的稳定的直流工作电 压；
所述电路尖峰吸收模块， 用于吸收电路中产生的尖峰电压和电流； 所述第二储能模块， 用于当市电断开时继续给驱动 IC供电， 以短 暂维持其工作；
所述驱动 IC,用于根据开关频率间隔及开和关通断次数相应的通过 PWM输出不同控制信号至驱动模块；
所述开关频率设置模块， 用于设置外部开关的开和关间隔的时间频 率；
所述输入功率检测模块， 用于采集 MOS管的输出电压反馈至驱动
IC;
所述驱动模块， 用于接受驱动 IC控制信号驱动 MOS管工作； 所述 MOS管， 用于根据驱动模块驱动输出对应调整的输出功率； 所述变压器， 用于 MOS管至驱动外部 LED间的功率传送、 电压变 换和绝缘隔离；
所述隔离整流滤波模块， 用于整流滤波后输出经调整的电压驱动外 部 LED。
7、 如权利要求 6所述的 LED灯组， 其特征在于： 所述隔离整流滤 波模块包括一电解电容及用于隔离整流的第六二极管。
8、 如权利要求 6所述的 LED灯组， 其特征在于： 所述稳压滤波模 块包括第八电阻、 稳压二极管、 稳压电容、 功率三极管及滤波电容； 所 述第八电阻输入连接启动模块， 第八电阻输出一路连接至功率三极管基 级， 另一路与并联接地的稳压二极管与稳压电容相连； 所述功率三极管 发射极输入连接驱动 IC, 集电极连接变压器； 于功率三极管的发射极、 集电极上分别对地连接有滤波电容。
9、 如权利要求 6所述的 LED灯组， 其特征在于： 所述电路尖峰吸 收模块包括第二电阻、 第四电容及第二二极管， 所述第二电阻与第四电 容并联后一端连接第一储能模块， 另一端连接第二二极管； 所述第二二 极管输出连接变压器。
10、如权利要求 6所述的 LED灯组， 其特征在于： 所述输入功率检 测模块包括第十电阻， 所述第十电阻连接于 MOS管漏极上， 第十电阻 还设有导线与驱动 IC相连。
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Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104661403A (zh) * 2014-12-28 2015-05-27 欧普照明股份有限公司 一种led驱动电路
CN104981064A (zh) * 2015-06-23 2015-10-14 成都亿信标准认证集团有限公司 简单实用的谐波改善型led驱动电路
CN105471279A (zh) * 2016-01-18 2016-04-06 烟台德和信电子技术有限公司 紫外灯驱动电源
CN106151894A (zh) * 2016-08-19 2016-11-23 中节能晶和照明有限公司 Led光学单元
CN106195677A (zh) * 2016-08-19 2016-12-07 中节能晶和照明有限公司 Led光引擎
CN106533215A (zh) * 2016-12-23 2017-03-22 广州创锐特光电技术有限公司 一种监控设备供电稳压电源装置
CN107404788A (zh) * 2017-07-20 2017-11-28 厦门通士达照明有限公司 同步实现调光及无频闪的led驱动ic
CN107493623A (zh) * 2017-07-13 2017-12-19 山东旭程照明科技有限公司 一种led驱动电源的图腾降耗高效装置
CN107517516A (zh) * 2017-08-15 2017-12-26 山东旭程照明科技有限公司 一种雷达感应led驱动的双亮控制系统
CN107658598A (zh) * 2017-11-13 2018-02-02 重庆国翰能源发展有限公司 一种带充电指示的充电插座
CN107911897A (zh) * 2017-10-12 2018-04-13 宁波宜胜照明有限公司 一种适用于led的大功率全电压输入驱动电路及方法
CN109640448A (zh) * 2018-12-25 2019-04-16 中山市卓越制品有限公司 一种恒流反馈控制电路
CN109905941A (zh) * 2019-03-07 2019-06-18 华南理工大学 单极式多模态宽范围输入电压无电解电容led驱动器
CN110874108A (zh) * 2019-12-24 2020-03-10 乐星汽车技术（无锡）有限公司 一种用于快速启停发动机系统的直流稳压器
CN113271698A (zh) * 2021-04-29 2021-08-17 江苏日月照明电器有限公司 一种单端供电1-10v t8 led调光灯管

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7295452B1 (en) * 2006-09-07 2007-11-13 Green Mark Technology Inc. Active power factor correction circuit and control method thereof
CN101203081A (zh) * 2007-10-22 2008-06-18 深圳市众明半导体照明有限公司 一种用于led调光的电源装置
CN101478849A (zh) * 2009-01-22 2009-07-08 广州南科集成电子有限公司 Led灯具节能控制电路
CN102395233A (zh) * 2011-11-02 2012-03-28 深圳市讯宇创科技有限公司 切换调光led驱动电路及led灯组

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7295452B1 (en) * 2006-09-07 2007-11-13 Green Mark Technology Inc. Active power factor correction circuit and control method thereof
CN101203081A (zh) * 2007-10-22 2008-06-18 深圳市众明半导体照明有限公司 一种用于led调光的电源装置
CN101478849A (zh) * 2009-01-22 2009-07-08 广州南科集成电子有限公司 Led灯具节能控制电路
CN102395233A (zh) * 2011-11-02 2012-03-28 深圳市讯宇创科技有限公司 切换调光led驱动电路及led灯组

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
DENG, YINBEI ET AL.: "Schemes Analysis and Comparison of the Dimming Design for LED Lighting", LIGHT & LIGHTING, vol. 35, no. 2, 30 June 2011 (2011-06-30), pages 38 - 40, 42 AND 51 *

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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