WO2017084525A1 - Led driving power capable of adjusting light and adjusting color temperature - Google Patents
Led driving power capable of adjusting light and adjusting color temperature Download PDFInfo
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- WO2017084525A1 WO2017084525A1 PCT/CN2016/105205 CN2016105205W WO2017084525A1 WO 2017084525 A1 WO2017084525 A1 WO 2017084525A1 CN 2016105205 W CN2016105205 W CN 2016105205W WO 2017084525 A1 WO2017084525 A1 WO 2017084525A1
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- 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
- H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
- H05B47/10—Controlling the light source
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- 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
- H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
- H05B47/10—Controlling the light source
- H05B47/165—Controlling the light source following a pre-assigned programmed sequence; Logic control [LC]
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Abstract
An LED driving power capable of adjusting light and adjusting color temperature comprising an MCU microprocessor (E), and an AC-DC current-controlled and voltage-limiting conversion circuit (A), a first path of MOS tube working in a PWM mode and a current signal processing circuit thereof (B), a second path of MOS tube working in a PWM mode and a current signal processing circuit thereof (C), a current signal processing circuit, a first load LED, a second load LED, a current signal adder (D) and a communication circuit (F) which are connected to the MCU microprocessor (E). The LED driving power can adjust two paths of current in LED lamp beads with different color temperatures, and the current is stable.
Description
本实用新型涉及LED电源技术领域，尤其涉及一种可调光调色温的LED驱动电源。The utility model relates to the technical field of LED power sources, in particular to an LED driving power source with adjustable light color temperature.
调节led灯具的亮度和色温，其指导思想就是电源要内置MCU控制电路，调节两路不同色温的led灯珠里的电流。现行常用的方案有以下两种。1，前一级整流+DC-DC恒压，然后是两路独立开环的PWM模式MOS斩波。2，前一级整流+DC-DC恒流，然后是两路独立开环的PWM模式的MOS斩波。上述两个方案的性能都有明显缺陷，即调节过程中，两路PWM模式的MOS里的电流比例是不确定的，且在某些工况时电流会出现高幅度脉冲。Adjusting the brightness and color temperature of the led lamps, the guiding idea is that the power supply should have a built-in MCU control circuit to adjust the current in the LED lamp beads of two different color temperatures. There are two commonly used solutions. 1, the first stage rectification + DC-DC constant voltage, and then two independent open loop PWM mode MOS chopping. 2, the first stage rectification + DC-DC constant current, then the two independent open loop PWM mode MOS chopping. The performance of the above two schemes has obvious defects. In the regulation process, the current ratio in the MOS of the two PWM modes is uncertain, and in some working conditions, the current will have a high amplitude pulse.
实用新型内容Utility model content
针对现有技术中存在的缺陷或不足，本实用新型所要解决的技术问题是：提供一种可调光调色温的LED驱动电源，其可调节两路不同色温的LED灯珠里的电流，且电流是稳定的。In view of the defects or deficiencies in the prior art, the technical problem to be solved by the present invention is to provide a dimmable color temperature LED driving power source, which can adjust the current in two LED lamp beads of different color temperatures, and The current is stable.
为了实现上述目的，本实用新型采取的技术方案为提供一种可调光调色温的LED驱动电源，包括MCU微处理器及与所述MCU微处理器连接的AC-DC电流受控及限压转换电路、第一路PMW模式工作的MOS管及其电流信号处理电路、第二路PMW模式工作的MOS管及其电流信号处理电路、第一负载LED、第二负载LED、电流信号加法器、通讯电路，所述AC-DC电流受控及限压转换电路分别与所述一路PMW模式工作的MOS管及其电流信号处理电路和所述第二路PMW模式工作的MOS管及其电流信号处理电路相连，所述第一路PMW模式工作的MOS管及其电流信号处理电路与所述第一负载LED相连，所述第二路PMW模式工作的MOS管及其电流信号处理电路与所述第二负载LED相连，所述电流信号加法器与所述第一路PMW模式工作的MOS管及其电流信号处理电路和第二路PMW模式工作的MOS管及其电流信号处理电路相连，第一路PMW模式工作的MOS管及其电流信号处理电路、第二路PMW模式工作的MOS管及其电流信号处理电路的输出信号送入电流信号加法器，电流信号加法器输出控制亮度所需的两路PMW模
式工作的MOS管及电流信号处理电路的总电流值。In order to achieve the above object, the technical solution adopted by the present invention is to provide a dimmable color temperature LED driving power source, including an MCU microprocessor and an AC-DC current controlled and connected to the MCU microprocessor. Voltage conversion circuit, MOS transistor working in the first PMW mode and its current signal processing circuit, MOS transistor working in the second PMW mode and its current signal processing circuit, first load LED, second load LED, current signal adder And a communication circuit, the AC-DC current controlled and voltage-limiting conversion circuit respectively, the MOS transistor working in the PMW mode and the current signal processing circuit thereof, and the MOS transistor working in the second PMW mode and the current signal thereof The processing circuit is connected, the first PMW mode working MOS transistor and its current signal processing circuit are connected to the first load LED, the second PMW mode working MOS transistor and its current signal processing circuit and the a second load LED is connected, and the current signal adder is connected to the MOS transistor working in the first PMW mode and its current signal processing circuit and the MOS transistor working in the second PMW mode and the current signal processing circuit thereof. The MOS transistor working in the first PMW mode and its current signal processing circuit, the output signal of the second PMW mode MOS transistor and its current signal processing circuit are sent to the current signal adder, and the current signal adder output is required to control the brightness. Two-way PMW mode
The total current value of the MOS tube and current signal processing circuit.
作为本实用新型的进一步改进，所述第一路PMW模式工作的MOS管及其电流信号处理电路和所述第二路PMW模式工作的MOS管及其电流信号处理电路还带有低通滤波器。As a further improvement of the present invention, the MOSFET of the first PMW mode and its current signal processing circuit and the MOS transistor of the second PMW mode and the current signal processing circuit thereof also have a low pass filter .
本实用新型的有益效果是：本实用新型提供一种可调光调色温的LED驱动电源，其可调节两路不同色温的LED灯珠里的电流，且电流是稳定的。The utility model has the beneficial effects that the utility model provides a dimmable color temperature LED driving power source, which can adjust currents in two LED lamp beads of different color temperatures, and the current is stable.
图1是本实用新型的结构框图。1 is a block diagram of the structure of the present invention.
下面结合附图说明及具体实施方式对本实用新型进一步说明。The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
如图1所示，图中粗线表示电能量通道，细线表示信号通道，本实用新型提供一种可调亮度和色温的led驱动电源，其包括AC-DC电流受控及电流限压转换电路A，采用单级反激隔离拓扑；一路PWM模式工作的MOS管及其电流信号处理电路B(其负载是一路LED)，另一路PWM模式工作的MOS及其电流信号处理电路C(其负载是另一路色温不同的LED)，电流信号加法器D，MCU微处理器E，通讯电路F。所述的AC-DC电流受控限压转换电路A，一部分输出送往电路B，然后输出到一路LED负载，另一部分输出送往电路C，然后输出到另一路LED负载。两路LED负载的色温不同。B和C的电流信号分别送往D和E。E通过分析两个电流的值判断比例是否合适。D的输出送往A，A根据D和E的信号调节输出，从而改变灯具的亮度。本实用新型的电源通过微处理器来实现全部控制功能,通过通讯电路F获得指令，按指令要求控制A电路的输出，用来调节亮度，根据B和C送来的电流信息，调节输送给B和C的PWM信号，精确控制两路不同色温的LED里电流的比例，从而控制LED整灯灯的亮度和色温。有两路PWM模式工作的MOS管及其相应的电流信号放大器(带低通滤波器)，B和C。电流信号放大器的输出信号能反映每一路里的实际电流值，控制色温需要知道这两个值。B和C的输出信号送入加法器D，加法器的输出能反映两路的总电流值。控制亮度需要知道这个值。As shown in FIG. 1 , the thick line in the figure represents an electric energy channel, and the thin line represents a signal channel. The utility model provides a led driving power source with adjustable brightness and color temperature, which comprises AC-DC current controlled and current limited voltage conversion. Circuit A, using a single-stage flyback isolation topology; a MOS transistor operating in PWM mode and its current signal processing circuit B (its load is one LED), another PWM mode operating MOS and its current signal processing circuit C (its load It is another LED with different color temperature, current signal adder D, MCU microprocessor E, communication circuit F. The AC-DC current controlled voltage-limiting conversion circuit A, a part of the output is sent to the circuit B, and then output to one LED load, and the other part of the output is sent to the circuit C, and then output to the other LED load. The color temperature of the two LED loads is different. The current signals of B and C are sent to D and E, respectively. E judges whether the ratio is appropriate by analyzing the values of the two currents. The output of D is sent to A, and A adjusts the output according to the signals of D and E, thereby changing the brightness of the lamp. The power supply of the utility model realizes all control functions through the microprocessor, obtains commands through the communication circuit F, controls the output of the A circuit according to the command requirements, is used to adjust the brightness, and adjusts the current information according to the B and C to the B. And the PWM signal of C, precisely control the ratio of the current in the LEDs of two different color temperatures, thereby controlling the brightness and color temperature of the LED whole lamp. There are two MOS transistors operating in PWM mode and their corresponding current signal amplifiers (with low pass filters), B and C. The output signal of the current signal amplifier can reflect the actual current value in each path. To control the color temperature, you need to know these two values. The output signals of B and C are sent to adder D, and the output of the adder can reflect the total current value of the two paths. To control the brightness you need to know this value.
以上内容是结合具体的优选实施方式对本实用新型所作的进一步详细说明，不能认定本实用新型的具体实施只局限于这些说明。对
于本实用新型所属技术领域的普通技术人员来说，在不脱离本实用新型构思的前提下，还可以做出若干简单推演或替换，都应当视为属于本实用新型的保护范围。
The above is a further detailed description of the present invention in conjunction with the specific preferred embodiments, and the specific implementation of the present invention is not limited to the description. Correct
It will be apparent to those skilled in the art that the present invention can be made without departing from the spirit and scope of the invention.
Claims (2)
- 一种可调光调色温的LED驱动电源，其特征在于：包括MCU微处理器及与所述MCU微处理器连接的AC-DC电流受控及限压转换电路、第一路PMW模式工作的MOS管及其电流信号处理电路、第二路PMW模式工作的MOS管及其电流信号处理电路、第一负载LED、第二负载LED、电流信号加法器、通讯电路，所述AC-DC电流受控及限压转换电路分别与所述一路PMW模式工作的MOS管及其电流信号处理电路和所述第二路PMW模式工作的MOS管及其电流信号处理电路相连，所述第一路PMW模式工作的MOS管及其电流信号处理电路与所述第一负载LED相连，所述第二路PMW模式工作的MOS管及其电流信号处理电路与所述第二负载LED相连，所述电流信号加法器与所述第一路PMW模式工作的MOS管及其电流信号处理电路和第二路PMW模式工作的MOS管及其电流信号处理电路相连，第一路PMW模式工作的MOS管及其电流信号处理电路、第二路PMW模式工作的MOS管及其电流信号处理电路的输出信号送入电流信号加法器，电流信号加法器输出控制亮度所需的两路PMW模式工作的MOS管及电流信号处理电路的总电流值。A dimmable color temperature LED driving power supply, comprising: an MCU microprocessor and an AC-DC current controlled and voltage limiting conversion circuit connected to the MCU microprocessor, and a first PMW mode operation MOS tube and its current signal processing circuit, MOS tube working in the second PMW mode and its current signal processing circuit, first load LED, second load LED, current signal adder, communication circuit, the AC-DC current The controlled and voltage-limiting conversion circuit is respectively connected to the MOS transistor working in one PMW mode and its current signal processing circuit and the MOS transistor working in the second PMW mode and its current signal processing circuit, the first PMW The mode-operated MOS transistor and its current signal processing circuit are connected to the first load LED, and the second PMW mode working MOS transistor and its current signal processing circuit are connected to the second load LED, the current signal The adder is connected to the MOS transistor working in the first PMW mode and its current signal processing circuit and the MOS transistor working in the second PMW mode and its current signal processing circuit, and the MOS transistor working in the first PMW mode and its current Signal The output circuit of the MOS transistor and the current signal processing circuit of the second PMW mode and the current signal processing circuit are sent to the current signal adder, and the current signal adder outputs the MOS tube and current signal processing of the two PMW modes required to control the brightness. The total current value of the circuit.
- 根据权利要求1所述的可调光调色温的LED驱动电源，其特征在于：所述第一路PMW模式工作的MOS管及其电流信号处理电路和所述第二路PMW模式工作的MOS管及其电流信号处理电路还带有低通滤波器。 The dimmable color temperature LED driving power supply according to claim 1, wherein said first PMW mode MOS transistor and its current signal processing circuit and said second PMW mode MOS operation The tube and its current signal processing circuit also have a low pass filter.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520914839.6U CN205213107U (en) | 2015-11-17 | 2015-11-17 | LED drive power supply of mixing of colors temperature of can adjusting luminance |
| CN201520914839.6 | 2015-11-17 |
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| WO2017084525A1 true WO2017084525A1 (en) | 2017-05-26 |
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| CN205213107U (en) * | 2015-11-17 | 2016-05-04 | 深圳市泰吉数字照明技术有限公司 | LED drive power supply of mixing of colors temperature of can adjusting luminance |
| CN106604470B (en) * | 2016-12-30 | 2018-06-12 | 淮海工学院 | A kind of colour temperature illumination harmony method |
| CN108076566A (en) * | 2017-12-27 | 2018-05-25 | 厦门阳光恩耐照明有限公司 | The LED circuit of two-way light modulation toning |
| CN113286399A (en) * | 2021-04-26 | 2021-08-20 | 上海利霸电子科技有限公司 | PWM drive circuit of many luminance light show stage property |
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| US20090108772A1 (en) * | 2007-10-30 | 2009-04-30 | Prodisc Technology Inc. | Color-temperature adjustable light-emitting device and control circuitry thereof |
| CN102231932A (en) * | 2011-07-29 | 2011-11-02 | 深圳市聚作实业有限公司 | LED lamp with intelligent control |
| CN102917486A (en) * | 2011-08-02 | 2013-02-06 | 北京同步科技有限公司 | LED lamp adjustable in luminance and color temperature |
| CN205213107U (en) * | 2015-11-17 | 2016-05-04 | 深圳市泰吉数字照明技术有限公司 | LED drive power supply of mixing of colors temperature of can adjusting luminance |
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- 2015-11-17 CN CN201520914839.6U patent/CN205213107U/en active Active
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US20090108772A1 (en) * | 2007-10-30 | 2009-04-30 | Prodisc Technology Inc. | Color-temperature adjustable light-emitting device and control circuitry thereof |
| CN102231932A (en) * | 2011-07-29 | 2011-11-02 | 深圳市聚作实业有限公司 | LED lamp with intelligent control |
| CN102917486A (en) * | 2011-08-02 | 2013-02-06 | 北京同步科技有限公司 | LED lamp adjustable in luminance and color temperature |
| CN205213107U (en) * | 2015-11-17 | 2016-05-04 | 深圳市泰吉数字照明技术有限公司 | LED drive power supply of mixing of colors temperature of can adjusting luminance |
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