WO2013177757A1 - 一种led调光驱动器及led光源*** - Google Patents

一种led调光驱动器及led光源*** Download PDF

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Publication number
WO2013177757A1
WO2013177757A1 PCT/CN2012/076255 CN2012076255W WO2013177757A1 WO 2013177757 A1 WO2013177757 A1 WO 2013177757A1 CN 2012076255 W CN2012076255 W CN 2012076255W WO 2013177757 A1 WO2013177757 A1 WO 2013177757A1
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WO
WIPO (PCT)
Prior art keywords
led
circuit
dimming driver
led dimming
driver
Prior art date
Application number
PCT/CN2012/076255
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English (en)
French (fr)
Inventor
邹高迪
Original Assignee
Zou Gaodi
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Zou Gaodi filed Critical Zou Gaodi
Priority to PCT/CN2012/076255 priority Critical patent/WO2013177757A1/zh
Publication of WO2013177757A1 publication Critical patent/WO2013177757A1/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]
    • H05B45/30—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
    • 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]
    • H05B45/375—Switched mode power supply [SMPS] using buck topology

Definitions

  • the present invention relates to a dimming driver for adjusting the brightness of an LED light source, and to an LED light source system using the dimming driver.
  • the LED has a nonlinear relationship between the operating voltage and the current, and the operating voltage of each LED is discrete. In practical applications, the operating current of the LED must be accurately controlled, otherwise the LED will be irreversible. damage. Therefore, as shown in Fig. 2, in the existing LED light source system, most of the LED driving power source adopts the constant current control type power source 100 to ensure the operational reliability of the LED.
  • LED light source for illumination usually needs to be dimmed.
  • the size of the constant current is generally adjusted or the current chopping duty ratio is adjusted.
  • This dimming method is effective for fixedly connected LED lamps, but
  • the load changes due to the movement or addition or subtraction of the luminaire.
  • the single LED light source may cause excessive current damage or shunt.
  • the problem of too little current illuminating darkening or even illuminating. Therefore, dimming non-fixedly connected LED luminaires by adjusting the current does not meet the requirements for reliable operation of the luminaire.
  • the object of the present invention is to provide a method for determining the highest voltage output and continuously modulating within a certain range, and providing an initial voltage value to the LED lamp by manual adjustment of the user to ensure that the LED is at the most
  • the working voltage in the dark state is based on this point as the reference point, and the stepping dimming is performed between the highest point of the voltage, that is, the brightest point. Since the highest voltage is known, the light source also uses this highest voltage as the rated voltage.
  • the voltage is matched, that is, the number of series is connected, and an appropriate current limiting resistor is connected in a single series circuit to ensure Current deviation due to LED nonlinearity or dispersion.
  • One of the technical problems to be solved by the present invention is to provide an LED dimming driver that overcomes the present LED dimming drivers cannot meet the shortcomings of dimming requirements for non-fixed-connected LED lamps.
  • the second technical problem to be solved by the present invention is to provide an LED light source system that overcomes the shortcomings of the existing LED light source system that cannot meet the dimming requirements of non-fixed connection LED lamps.
  • an LED dimming driver comprising: an electromagnetic interference filter circuit, a rectifier circuit, a power factor correction circuit, and a high frequency DC/DC buck isolation conversion Circuit, PWM control circuit, output voltage feedback control circuit, initial voltage regulator, D/A conversion circuit, MCU chip, isolated optocoupler A and isolated optocoupler B; said electromagnetic interference filter circuit, rectifier circuit, power factor correction a circuit, a high frequency DC/DC buck conversion circuit is sequentially connected, an output end of the high frequency DC/DC buck conversion circuit is an output end of the LED dimming driver, and an input end of the power factor correction circuit is the LED tune Optical drive input
  • the input end of the PWM control circuit is connected to the output end of the isolation optocoupler A, and the output end is connected to the control end of the high frequency DC/DC buck isolation conversion circuit;
  • the initial voltage regulating component is connected to the input end of the MCU, and the output end of the MCU is connected to the output voltage feedback control circuit via the D/A conversion circuit, and then connected to the input end of the isolated optocoupler A; the input end of the MCU is connected to the isolated optocoupler B, and the optocoupler B is isolated.
  • the input end is connected to the switch dimming port, and the output voltage feedback control circuit is simultaneously connected to the output end of the LED dimming driver;
  • the LED dimming driver control port control signal value upper limit corresponds to the LED dimming driver output terminal output voltage upper limit
  • the LED dimming driver control port control signal value lower limit corresponding to the LED dimming driver output terminal output voltage driving LED load lamp group The starting voltage of the work.
  • the control signal of the LED dimming driver control port is a standard dimming interface DC1—10V voltage, or the control signal of the LED dimming driver control port is a standard dimming interface DC4- 20MA current.
  • the output voltage of the output of the LED dimming driver is limited to 12 volts, and the upper limit of the voltage value of the control port of the LED dimming driver is 10 volts, and the lower limit is 1 volt; or the LED is adjusted.
  • the upper limit of the output voltage of the optical driver output is 12 volts.
  • the upper limit of the current value of the LED dimming driver control port is 20 mA and the lower limit is 4 mA.
  • the technical solution adopted by the present invention to solve the second technical problem thereof is: constructing an LED light source system
  • the system includes an LED dimming driver and a plurality of LED lamp groups connected in parallel at the output end of the LED dimming driver, wherein:
  • the LED dimming driver comprises an electromagnetic interference filter circuit, a rectifier circuit, a power factor correction circuit, a high frequency DC/DC buck isolation conversion circuit, a PWM control circuit, an output voltage feedback control circuit, a starting voltage regulator, and a D/A Conversion circuit, MCU chip, isolated optocoupler A and isolated optocoupler B;
  • the electromagnetic interference filter circuit, the rectifier circuit, the power factor correction circuit, and the high frequency DC/DC buck conversion circuit are sequentially connected, and the output end of the high frequency DC/DC buck conversion circuit is an output end of the LED dimming driver.
  • the input of the power factor correction circuit is an input of the LED dimming driver
  • the input end of the PWM control circuit is connected to the output end of the isolation optocoupler A, and the output end is connected to the control end of the high frequency DC/DC buck isolation conversion circuit;
  • the initial voltage regulating component is connected to the input end of the MCU, and the output end of the MCU is connected to the output voltage feedback control circuit via the D/A conversion circuit, and then connected to the input end of the isolated optocoupler A; the input end of the MCU is connected to the isolated optocoupler B, and the optocoupler B is isolated.
  • the input end is connected to the switch dimming port, and the output voltage feedback control circuit is simultaneously connected to the output end of the LED dimming driver;
  • the LED dimming driver control port control signal value upper limit corresponds to the LED dimming driver output terminal output voltage upper limit
  • the LED dimming driver control port control signal value lower limit corresponding to the LED dimming driver output terminal output voltage driving LED load lamp group Starting voltage of work
  • Each of the LED lamp sets includes a current limiting element and a plurality of LED lamps connected in series.
  • control signal of the LED dimming driver control port is a standard dimming interface DC1-10V voltage, or the control signal of the LED dimming driver control port is a standard dimming interface DC4-20MA Current.
  • the output voltage of the output of the LED dimming driver is limited to 12 volts, and the upper limit of the voltage value of the control port of the LED dimming driver is 10 volts, and the lower limit is 1 volt; or the LED dimming The output voltage of the driver output is limited to 12 volts.
  • the upper limit of the current value of the LED dimming driver control port is 20 mA and the lower limit is 4 mA.
  • the current limiting element is a resistor.
  • the LED dimming driver and the LED light source system embodying the present invention have the beneficial effects compared with the prior art:
  • Figure 1 is an LED illumination characteristic curve.
  • FIG. 2 is a circuit diagram of an embodiment of a conventional LED light source system.
  • FIG. 3 is a circuit schematic diagram of an embodiment of an LED dimming driver of the present invention.
  • FIG. 4 is a circuit diagram of an embodiment of an LED light source system of the present invention.
  • the LED dimming driver 1 of the present invention includes an EMI filter circuit (Electromagnetic Interference) 101, a rectifier circuit 102, a PFC circuit (Power Factor Correction) 103, and a high frequency DCVDC step-down isolation converter.
  • Circuit 105 PWM control circuit (Pulse Width Modulation) 104, output voltage feedback control circuit 2, initial voltage regulator 110, D/A conversion circuit 108, MCU chip 109, isolated optocoupler A107 and isolated optocoupler B106 .
  • the EMI filter circuit 101, the rectifier circuit 102, the PFC circuit 103, and the high frequency DCVDC buck isolation conversion circuit 105 are sequentially connected.
  • the output end of the high frequency DC/DC buck isolation conversion circuit 105 is the output end 3 of the LED dimming driver 1;
  • the input end of the EMI filter circuit 101 is the input end of the LED dimming driver 1, and the rectifying circuit 102 can include However, it is not limited to a full bridge rectifier circuit, a half bridge rectifier circuit, and the like.
  • the control terminal of the PWM control circuit 104 is connected to the control terminal of the high frequency DC/DC buck isolation conversion circuit 105, and the input terminal of the PWM control circuit 104 is connected to the output terminal of the isolation optocoupler A107.
  • the PWM control circuit 104 is simultaneously connected to the output terminal of the rectifier circuit 102 and the PFC circuit 103, respectively.
  • the output voltage feedback control circuit 2 is connected to the control terminal of the high frequency DC/DC buck isolation conversion circuit 105 through the isolation optocoupler A, and the MCU chip 109 is connected to the input terminal of the D/A conversion circuit 108, D/A.
  • the output of the conversion circuit 108 is connected to the output voltage feedback control circuit 2, and the input of the output voltage feedback control circuit 2 is connected to the two outputs of the LED dimming driver.
  • the starting voltage regulator 110 can include, but is not limited to, a long handle hand potentiometer, a semi-adjustable potentiometer, a trimmer potentiometer, a sealed precision potentiometer, a controllable digital potentiometer, a dial switch combination, and the like.
  • the control terminal of the MCU chip 109 is the control port of the LED dimming driver 1.
  • the adjustment signal of the control port 9 can be a standard dimming interface DC1-10V voltage or a standard dimming interface DC4-20MA current.
  • the signal input end of the MCU chip 109 is connected to the output of the isolation optocoupler 106, and the input end of the isolation optocoupler 106 is connected to the switch dimming port 10 of the LED dimming driver 1.
  • the MCU chip 109 is used for signal processing and control output.
  • the switch dimming control port 10 is a SWITCH-DIM dimming control port, and a voltage signal is applied to the port through the switch, and the output voltage of the LED dimming driver output terminal is slowly adjusted from the upper limit to the starting voltage of the LED load lamp group operation, or The starting voltage from the operation of the LED load lamp group is slowly adjusted to the upper limit voltage of the LED load lamp group.
  • the LED dimming driver stays in this state.
  • the upper limit of the control signal value of the control port of the LED dimming driver 1 corresponds to the upper limit of the output voltage of the output of the LED dimming driver 1
  • the lower limit of the control port value of the control port of the LED dimming driver 1 corresponds to the output voltage of the output of the LED dimming driver 1.
  • the control port control signal can be either a voltage signal or a current signal.
  • the upper limit of the output voltage of the LED dimming driver 1 is 12 volts
  • the upper limit of the control port voltage signal of the LED dimming driver 1 is set to 10 volts
  • the lower limit is 1 volt
  • the output voltage of the LED dimming driver output is When the upper limit is 12 volts, the upper limit of the control port current signal value of the LED dimming driver 1 is set to 20 mA, and the lower limit is 4 mA.
  • the LED light source system of the present invention comprises an LED dimming driver 1 and a plurality of LED lamp groups connected in parallel to the output end of the LED dimming driver 1 (the LED lamp groups 5, 6, 7, 8 are shown in the figure). ).
  • the LED dimming driver 1 adopts the above LED dimming driver, and details are not described herein.
  • Each LED lamp group includes a current limiting component 11 and a plurality of LED lamps 12 connected in series, and the current limiting component 11 can adopt a resistor or a constant current diode. Wait.
  • a plurality of LED light groups are connected to the lamp pull wire or the lamp track 4, and the LED dimming driver 1 is provided, and the dimming control port control signal is a 1-10V or 4-20mA universal dimming port, and the LED dimming
  • the upper limit voltage of the output of the driver 1 is DC12V
  • the LED lamp group is 3-4 LEDs in series (the number of LED lamps depends on the operating voltage of the specific LED lamp).
  • the initial voltage is usually about 1/3 of its rated voltage.
  • the LED light group is weakly illuminated by the user manually adjusting the output starting voltage adjusting member 2.
  • the MCU chip in the LED dimming driver 1 dims the voltage as the LED lamp to the darkest.
  • the initial voltage is relative to the IV state or 4 mA state of the control port 9 of the LED dimming driver 1, and DC12V corresponds to the 10 V state or the 20 mA state of the control port 9 of the LED dimming driver 1.
  • the dimming curve is changed to achieve the purpose of dimming.

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  • Circuit Arrangement For Electric Light Sources In General (AREA)

Abstract

一种LED调光驱动器（1）及LED光源***，驱动器包括EMI滤波电路（101）、整流电路（102）、PFC电路（103）、高频DC\DC降压隔离变换电路（105）、PWM控制电路（104）、输出电压反馈控制电路（2）、起始电压调节件（110）、D/A转换电路（108）、MCU芯片（109）、隔离光耦A（107）、隔离光耦B（106）；EMI滤波电路（101）、整流电路（102）、PFC电路（103）、高频DC\DC降压隔离变换电路（105）顺序连接，PWM控制电路（104）输入端连接隔离光耦B（106），隔离光耦B（106）输入端连接开关调光端口（10）；光源***包括上述驱动器（1）和并联连接在驱动器输出端的若干LED灯组（5，6，7，8），各灯组包括串联连接的限流元件（11）和若干LED灯（12）。本发明满足固定连接、非固定连接LED灯具连续调光，简单并易实施。

Description

一种 LED调光驱动器及 LED光源*** 技术领域
本发明涉及一种用于调节 LED光源亮度的调光驱动器， 还涉及使用该调 光驱动器的 LED光源***。
背景技术
随着 LED的光效特性持续提高， LED光源进入照明领域的应用已是大 势所趋。如图 1所示， LED具有工作电压与电流呈非线性关系、同时每个 LED 的工作电压呈离散性的特点， 在实际应用中， 必须精确控制 LED的工作电流， 否则将造成 LED不可逆转的损坏。 因此， 如图 2所示， 在现有的 LED光源系 统中， LED驱动电源绝大部分采用恒流控制型电源 100， 以保证 LED的工作 可靠性。
照明用 LED光源通常需要进行调光， 目前一般采用调节恒流电流的大小 或采用调节电流斩波占空比的方式进行调光， 这种调光方式对于固定连接的 LED灯具是有效的， 但是， 对于采用非固定连接的 LED灯具 （如走线灯、 轨 道灯等）， 由于灯具移动或加减个数造成负载变化， 固定电流后对单个 LED光 源将可能带来电流过大损毁或分流后电流过少发光变暗甚至不能发光的问题。 因此， 采用调节电流的方式对非固定连接的 LED灯具进行调光不能满足灯具 可靠工作的要求。
针对上述实际应用中的问题，本发明的目的是提出一种采用确定最高电压 输出和在一定范围内连续调变的方式， 通过用户的手动调节提供给 LED灯一 个初始电压值， 保证 LED在最暗时的工作电压， 依此点为参考点， 与电压最 高点即最亮点之间进行分级调光。 由于最高电压是已知的， 光源也采用此最高 电压作为额定电压， 在 LED单个灯内模组中进行电压适配即串联个数， 在单 个串联回路中串入一个适当的限流电阻来保证因 LED非线性或离散性引起的 电流偏差。
发明内容
本发明要解决的技术问题之一在于， 提供一种 LED调光驱动器， 克服现 有 LED调光驱动器不能满足非固定连接 LED灯具调光要求的缺陷。
本发明要解决的技术问题之二在于， 提供一种 LED光源***， 克服现有 LED光源***不能满足非固定连接 LED灯具调光要求的缺陷。
本发明解决其技术问题之一所采用的技术方案是： 构造一种 LED调光驱 动器， 其特征在于： 包括电磁干扰滤波电路、 整流电路、 功率因数校正电路、 高频 DC\DC降压隔离变换电路、 PWM控制电路、 输出电压反馈控制电路、 起始电压调节件、 D/A转换电路、 MCU芯片、 隔离光耦 A和隔离光耦 B; 所述电磁干扰滤波电路、 整流电路、 功率因数校正电路、 高频 DC\DC降 压变换电路顺序连接，高频 DC\DC降压变换电路的输出端为所述 LED调光驱 动器的输出端， 所述功率因数校正电路输入端为所述 LED调光驱动器的输入
¾ ;
所述 PWM控制电路输入端连接隔离光耦 A 输出端、 输出端连接高频 DC\DC降压隔离变换电路控制端；
所述起始电压调节件连接 MCU输入端， MCU输出端经 D/A转换电路连 接输出电压反馈控制电路后再连接隔离光耦 A输入端； MCU输入端连接隔离 光耦 B, 隔离光耦 B输入端连接到开关调光端口，所述输出电压反馈控制电路 同时连接 LED调光驱动器的输出端；
所述 LED调光驱动器控制端口控制信号值上限对应该 LED调光驱动器输 出端输出电压上限， 该 LED调光驱动器控制端口控制信号值下限对应该 LED 调光驱动器输出端输出电压驱动 LED负载灯组工作的起始电压。
在本发明的 LED调光驱动器中，所述 LED调光驱动器控制端口的控制信 号为标准调光接口 DC1— 10V电压， 或所述 LED调光驱动器控制端口的控制 信号为标准调光接口 DC4-20MA电流。
在本发明的 LED调光驱动器中，所述 LED调光驱动器输出端输出电压上 限为 12伏， 该 LED调光驱动器控制端口电压信号值上限为 10伏、 下限为 1 伏； 或所述 LED调光驱动器输出端输出电压上限为 12伏， 该 LED调光驱动 器控制端口电流信号值上限为 20毫安、 下限为 4毫安。
本发明解决其技术问题之二所采用的技术方案是： 构造一种 LED光源系 统，包括 LED调光驱动器和并联连接在该 LED调光驱动器输出端的若干 LED 灯组， 其特征在于：
所述 LED调光驱动器包括电磁干扰滤波电路、 整流电路、 功率因数校正 电路、 高频 DC\DC降压隔离变换电路、 PWM控制电路、 输出电压反馈控制 电路、 起始电压调节件、 D/A转换电路、 MCU芯片、 隔离光耦 A和隔离光耦 B;
所述电磁干扰滤波电路、 整流电路、 功率因数校正电路、 高频 DC\DC降 压变换电路顺序连接，高频 DC\DC降压变换电路的输出端为所述 LED调光驱 动器的输出端， 所述功率因数校正电路输入端为所述 LED调光驱动器的输入
¾ ;
所述 PWM控制电路输入端连接隔离光耦 A 输出端、 输出端连接高频 DC\DC降压隔离变换电路控制端；
所述起始电压调节件连接 MCU输入端， MCU输出端经 D/A转换电路连 接输出电压反馈控制电路后再连接隔离光耦 A输入端； MCU输入端连接隔离 光耦 B, 隔离光耦 B输入端连接到开关调光端口，所述输出电压反馈控制电路 同时连接 LED调光驱动器的输出端；
所述 LED调光驱动器控制端口控制信号值上限对应该 LED调光驱动器输 出端输出电压上限， 该 LED调光驱动器控制端口控制信号值下限对应该 LED 调光驱动器输出端输出电压驱动 LED负载灯组工作的起始电压；
每个所述 LED灯组包括串联连接的限流元件和若干 LED灯。
在本发明的 LED光源***中，所述 LED调光驱动器控制端口的控制信号 为标准调光接口 DC1— 10V电压， 或所述 LED调光驱动器控制端口的控制信 号为标准调光接口 DC4-20MA电流。
在本发明的 LED光源***中，所述 LED调光驱动器输出端输出电压上限 为 12伏， 该 LED调光驱动器控制端口电压信号值上限为 10伏、下限为 1伏; 或所述 LED调光驱动器输出端输出电压上限为 12伏， 该 LED调光驱动器控 制端口电流信号值上限为 20毫安、 下限为 4毫安。
在本发明的 LED光源***中， 所述限流元件为电阻。 实施本发明的 LED调光驱动器及 LED光源***， 与现有技术比较， 其有 益效果是：
1. 不仅能够满足固定连接的 LED灯具的连续调光， 而且能够满足非固 定连接的 LED灯具的连续调光。
2. 结构简单， 容易实施。
附图说明
下面将结合附图及实施例对本发明作进一歩说明， 附图中：
图 1是 LED发光特性曲线。
图 2是现有 LED光源***一种实施例的电路图。
图 3是本发明 LED调光驱动器一种实施例的电路原理图。
图 4是本发明 LED光源***一种实施例的电路图。
具体实施方式
如图 3 所示， 本发明的 LED 调光驱动器 1 包括 EMI 滤波电路 (Electromagnetic Interference电磁干扰滤波） 101、 整流电路 102、 PFC电路 (Power Factor Correction功率因数校正） 103、 高频 DCVDC降压隔离变换电 路 105、 PWM控制电路（Pulse Width Modulation脉宽调制） 104、 输出电压反 馈控制电路 2， 起始电压调节件 110、 D/A转换电路 108、 MCU芯片 109、 隔 离光耦 A107和隔离光耦 B106。
EMI滤波电路 101、整流电路 102、 PFC电路 103、 高频 DCVDC降压隔离 变换电路 105顺序连接。 其中， 高频 DC\DC降压隔离变换电路 105的输出端 为 LED调光驱动器 1的输出端 3; EMI滤波电路 101的输入端为 LED调光驱 动器 1的输入端，整流电路 102可采用包括但不限于全桥整流电路、半桥整流 电路等。
PWM控制电路 104的控制端连接高频 DC\DC降压隔离变换电路 105的 控制端， PWM控制电路 104的输入端连接隔离光耦 A107的输出端。 PWM控 制电路 104同时分别与整流电路 102输出负端和 PFC电路 103连接。
输出电压反馈控制电路 2通过隔离光耦 A连接高频 DC\DC降压隔离变换 电路 105的控制端、 MCU芯片 109连接到 D/A转换电路 108的输入端， D/A 转换电路 108的输出端连接到输出电压反馈控制电路 2， 输出电压反馈控制电 路 2输入端连接 LED调光驱动器的两个输出端。
起始电压调节件 110可采用包括但不限于长柄手调电位器,半可调电位器, 微调电位器，密封精密电位器，可控数字电位器，拨码开关组合等等。
MCU芯片 109的控制端为 LED调光驱动器 1的控制端口 9， 控制端口 9 的调节信号可为标准调光接口 DC1— 10V电压或为标准调光接口 DC4-20MA 电流。 MCU芯片 109的信号输入端连接隔离光耦 106的输出端，隔离光耦 106 的输入端连接 LED调光驱动器 1的开关调光端口 10。 MCU芯片 109用于信 号处理及控制输出。
开关调光控制端口 10为 SWITCH-DIM调光控制端口， 通过开关在此端 口加上电压信号， LED调光驱动器输出端输出电压从上限慢慢调节到 LED负 载灯组工作的起始电压， 或从 LED负载灯组工作的起始电压慢慢调节到 LED 负载灯组的上限电压， 在往上调或往下调的过程中， 一旦调光开关断开， LED 调光驱动器便停留在此状态。
LED调光驱动器 1的控制端口的控制信号值上限对应该 LED调光驱动器 1的输出端输出电压上限， LED调光驱动器 1控制端口控制信号值下限对应该 LED调光驱动器 1输出端输出电压驱动 LED负载灯组工作的起始电压。 该起 始电压由人工手动实现。
LED调光驱动器 1控制端口控制信号可以采用电压信号， 也可以采用电 流信号。 例如， 当 LED调光驱动器 1输出端输出电压上限为 12伏时， 设定 LED调光驱动器 1控制端口电压信号值上限为 10伏、下限为 1伏； 或当 LED 调光驱动器输出端输出电压上限为 12伏时，设定该 LED调光驱动器 1控制端 口电流信号值上限为 20毫安、 下限为 4毫安。
如图 4所示，本发明的 LED光源***包括 LED调光驱动器 1和并联连接 在该 LED调光驱动器 1输出端的若干 LED灯组（图中示出了 LED灯组 5、 6、 7、 8 )。 其中， LED调光驱动器 1采用上述 LED调光驱动器， 在此不再赘述， 每个 LED灯组包括串联连接的限流元件 11和若干 LED灯 12， 限流元件 11 可采用电阻或恒流二极管等。 在本实施例中，多个 LED灯组连接在灯具拉线或灯具轨道 4上，设置 LED 调光驱动器 1，调光控制端口控制信号为 1-10V或 4-20mA通用调光端口， LED 调光驱动器 1输出端上限电压为 DC12V, LED灯组为 3-4个 LED串联（LED 灯的数量视具体 LED灯的工作电压而定）。 要使 LED灯从不亮态到接近发光 状态， 初始电压一般会在其额定电压的 1/3左右。 在本实施例中， 通过用户手 动调节输出起始电压调节件 2， 使 LED灯组微弱发光， 此时， LED调光驱动 器 1 内的 MCU芯片会将此电压作为 LED灯具调光到最暗的最低电压， 同时 对 LED调光驱动器 1输出的最高电压 DC12V之间的范围进行分级， 如分为 512级或 1024级等。 初始电压相对于 LED调光驱动器 1的控制端口 9的 IV 状态或 4mA状态， DC12V对应于 LED调光驱动器 1的控制端口 9的 10 V状 态或 20 mA状态。 调节 LED调光驱动器 1的控制端口 9的电压或电流输入， 对应于 LED调光驱动器 1输出端初始电压至最高电压之间按分级改变电压的 输出， 从而使每个 LED灯组内的工作电流以设定的调光曲线发生变化， 达到 调光的目的。
同时， 由于每个 LED灯组内设置了一个限流器件 （该限流元件的大小本 领域普通技术人员可以确定），即使 LED调光驱动器 1输出为最高电压， LED 灯组在额定工作电压下工作， 也不致于由于灯组内各个 LED灯的离散性而导 致过流损毁。

Claims

权 利 要 求 书
1、 一种 LED调光驱动器， 其特征在于： 包括电磁干扰滤波电路、 整流电 路、 功率因数校正电路、 高频 DC\DC降压隔离变换电路、 PWM控制电路、 输出电压反馈控制电路、 起始电压调节件、 D/A转换电路、 MCU芯片、 隔离 光耦 A和隔离光耦 B;
所述电磁干扰滤波电路、 整流电路、 功率因数校正电路、 高频 DC\DC降 压变换电路顺序连接，高频 DC\DC降压变换电路的输出端为所述 LED调光驱 动器的输出端， 所述功率因数校正电路输入端为所述 LED调光驱动器的输入
¾ ;
所述 PWM控制电路输入端连接隔离光耦 A 输出端、 输出端连接高频 DC\DC降压隔离变换电路控制端；
所述起始电压调节件连接 MCU输入端， MCU输出端经 D/A转换电路连 接输出电压反馈控制电路后再连接隔离光耦 A输入端； MCU输入端连接隔离 光耦 B, 隔离光耦 B输入端连接到开关调光端口，所述输出电压反馈控制电路 同时连接 LED调光驱动器的输出端；
所述 LED调光驱动器控制端口控制信号值上限对应该 LED调光驱动器输 出端输出电压上限， 该 LED调光驱动器控制端口控制信号值下限对应该 LED 调光驱动器输出端输出电压驱动 LED负载灯组工作的起始电压。
2、 如权利要求 1所述的 LED调光驱动器， 其特征在于： 所述 LED调光 驱动器控制端口的控制信号为标准调光接口 DC1— 10V电压， 或所述 LED调 光驱动器控制端口的控制信号为标准调光接口 DC4-20MA电流。
3、 如权利要求 2所述的 LED调光驱动器， 其特征在于： 所述 LED调光 驱动器输出端输出电压上限为 12伏，该 LED调光驱动器控制端口电压信号值 上限为 10伏、 下限为 1伏； 或所述 LED调光驱动器输出端输出电压上限为 12伏， 该 LED调光驱动器控制端口电流信号值上限为 20毫安、 下限为 4毫 安。
4、一种 LED光源***， 包括 LED调光驱动器和并联连接在该 LED调光 驱动器输出端的若干 LED灯组， 其特征在于：
所述 LED调光驱动器包括电磁干扰滤波电路、 整流电路、 功率因数校正 电路、 高频 DC\DC降压隔离变换电路、 PWM控制电路、 输出电压反馈控制 电路、 起始电压调节件、 D/A转换电路、 MCU芯片、 隔离光耦 A和隔离光耦 B;
所述电磁干扰滤波电路、 整流电路、 功率因数校正电路、 高频 DC\DC降 压变换电路顺序连接，高频 DC\DC降压变换电路的输出端为所述 LED调光驱 动器的输出端， 所述功率因数校正电路输入端为所述 LED调光驱动器的输入
¾ ;
所述 PWM控制电路输入端连接隔离光耦 A 输出端、 输出端连接高频 DC\DC降压隔离变换电路控制端；
所述起始电压调节件连接 MCU输入端， MCU输出端经 D/A转换电路连 接输出电压反馈控制电路后再连接隔离光耦 A输入端； MCU输入端连接隔离 光耦 B, 隔离光耦 B输入端连接到开关调光端口，所述输出电压反馈控制电路 同时连接 LED调光驱动器的输出端；
所述 LED调光驱动器控制端口控制信号值上限对应该 LED调光驱动器输 出端输出电压上限， 该 LED调光驱动器控制端口控制信号值下限对应该 LED 调光驱动器输出端输出电压驱动 LED负载灯组工作的起始电压；
每个所述 LED灯组包括串联连接的限流元件和若干 LED灯。
5、 如权利要求 4所述的 LED光源***， 其特征在于： 所述 LED调光驱 动器控制端口的控制信号为标准调光接口 DC1— 10V电压， 或所述 LED调光 驱动器控制端口的控制信号为标准调光接口 DC4-20MA电流。
6、 如权利要求 5所述的 LED光源***， 其特征在于： 所述 LED调光驱 动器输出端输出电压上限为 12伏，该 LED调光驱动器控制端口电压信号值上 限为 10伏、 下限为 1伏； 或所述 LED调光驱动器输出端输出电压上限为 12 伏， 该 LED调光驱动器控制端口电流信号值上限为 20毫安、 下限为 4毫安。
7、如权利要求 4至 6之一所述的 LED光源***， 其特征在于： 所述限流 元件为电阻。
PCT/CN2012/076255 2012-05-30 2012-05-30 一种led调光驱动器及led光源*** WO2013177757A1 (zh)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104883800A (zh) * 2015-06-15 2015-09-02 南京大学 GHz高速LED光通信驱动器
CN104981043A (zh) * 2014-04-01 2015-10-14 吴燕珊 一种自动调光灯具电路
CN107071966A (zh) * 2017-03-13 2017-08-18 深圳盈特创智能科技有限公司 一种led灯调光***
CN109168215A (zh) * 2018-09-04 2019-01-08 广东明丰电源电器实业有限公司 一种基于多通道控制的调光电路
CN109922566A (zh) * 2019-03-04 2019-06-21 深圳民爆光电技术有限公司 智能调光led驱动装置和led灯控制***
CN110430634A (zh) * 2019-07-24 2019-11-08 深圳市裕明鑫科技有限公司 一种可调节输出电流的led恒流驱动

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100940042B1 (ko) * 2009-07-22 2010-02-04 주식회사 동운아나텍 Ｌｅｄ 조명 구동 장치
WO2010047433A1 (en) * 2008-10-25 2010-04-29 Ki Ho Nam Driving circuit for an ultra-bright led lamp
CN201608937U (zh) * 2009-07-01 2010-10-13 西安孚莱德光电科技有限公司 简易智能调光led驱动器
CN102076152A (zh) * 2011-01-21 2011-05-25 南京吉山光电科技有限公司 可调功率led恒流源
CN102264175A (zh) * 2010-05-26 2011-11-30 马士科技有限公司 一种可分级调光的发光二极管灯调光装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010047433A1 (en) * 2008-10-25 2010-04-29 Ki Ho Nam Driving circuit for an ultra-bright led lamp
CN201608937U (zh) * 2009-07-01 2010-10-13 西安孚莱德光电科技有限公司 简易智能调光led驱动器
KR100940042B1 (ko) * 2009-07-22 2010-02-04 주식회사 동운아나텍 Ｌｅｄ 조명 구동 장치
CN102264175A (zh) * 2010-05-26 2011-11-30 马士科技有限公司 一种可分级调光的发光二极管灯调光装置
CN102076152A (zh) * 2011-01-21 2011-05-25 南京吉山光电科技有限公司 可调功率led恒流源

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104981043A (zh) * 2014-04-01 2015-10-14 吴燕珊 一种自动调光灯具电路
CN104883800A (zh) * 2015-06-15 2015-09-02 南京大学 GHz高速LED光通信驱动器
CN107071966A (zh) * 2017-03-13 2017-08-18 深圳盈特创智能科技有限公司 一种led灯调光***
CN109168215A (zh) * 2018-09-04 2019-01-08 广东明丰电源电器实业有限公司 一种基于多通道控制的调光电路
CN109922566A (zh) * 2019-03-04 2019-06-21 深圳民爆光电技术有限公司 智能调光led驱动装置和led灯控制***
CN109922566B (zh) * 2019-03-04 2024-01-12 深圳民爆光电股份有限公司 智能调光led驱动装置和led灯控制***
CN110430634A (zh) * 2019-07-24 2019-11-08 深圳市裕明鑫科技有限公司 一种可调节输出电流的led恒流驱动

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