WO2009079924A1 - Mr16 type high power led lamp - Google Patents

Mr16 type high power led lamp Download PDF

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Publication number
WO2009079924A1
WO2009079924A1 PCT/CN2008/001982 CN2008001982W WO2009079924A1 WO 2009079924 A1 WO2009079924 A1 WO 2009079924A1 CN 2008001982 W CN2008001982 W CN 2008001982W WO 2009079924 A1 WO2009079924 A1 WO 2009079924A1
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WIPO (PCT)
Prior art keywords
circuit
integrated circuit
power led
led lamp
schottky diode
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Ceased
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PCT/CN2008/001982
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English (en)
French (fr)
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Jinxiang Shen
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Priority to EP08865037A priority Critical patent/EP2293652A4/en
Priority to US12/993,313 priority patent/US20110140632A1/en
Publication of WO2009079924A1 publication Critical patent/WO2009079924A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/30—Driver circuits
    • H05B45/37—Converter circuits
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
    • Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]

Definitions

  • the invention relates to a high-power LED lamp, in particular to an MR16-type high-power LED lamp which can adapt to power frequency communication and can also adapt to high-frequency AC and has a nominal working voltage of 12VAC.
  • the existing MR16 high-power LED lamps generally use the power frequency AC low voltage 12V as the working voltage. Because the simple working frequency AC low voltage 12V working voltage can not be effectively compatible with the high frequency AC 12V output using the high frequency electronic transformer as the input power, The MR16 type high-power LED lamp, which can only use the power frequency low voltage 12V as the working voltage, can directly replace the conventional high-frequency AC 12V with high-frequency electronic transformer output as the working voltage MR16 low-voltage tungsten halogen lamp. Considering the development trend of MR16 high-power LED lamps, it is inevitable to directly replace the traditional low-voltage tungsten halogen lamps.
  • An object of the present invention is to provide an MR16 type high power LED lamp which can adapt to both power frequency communication and high frequency communication and has a nominal operating voltage of 12 VAC in order to solve the above deficiencies in the prior art.
  • the MR16 type high power LED lamp designed by the invention comprises a driver and an LED illuminator, wherein the driver comprises a rectifying circuit, a constant current circuit and an output circuit, and the input end of the rectifying circuit is input with a power frequency I high frequency low voltage alternating current
  • the rectifier circuit is composed of Schottky diodes D1, D2, D3, D4 and an electrolytic capacitor CI, wherein: the positive pole of the Schottky diode D1 is connected to the negative pole of the D3 and then connected to the input power supply end, and the Schottky diode D2 positive pole and the D4 After the negative pole is connected, the confirmation is confirmed.
  • the negative electrode of the Schottky diode D1 is connected with the negative electrode of the D2 and the positive electrode of the electrolytic capacitor C1 to form the positive polarity of the DC power supply
  • the positive electrode of the Schottky diode D3 is connected with the negative electrode of the D4 positive electrode and the electrolytic capacitor C1 to form a DC power supply. Negative polarity.
  • the constant current circuit is composed of an integrated circuit: a capacitor C2 and a resistor R, wherein: the first bow of the integrated circuit IC is connected to the anode of the electrolytic capacitor C1 and one end of the resistor R, and the second pin of the integrated circuit IC Connected to the other end of the resistor R, the third pin of the integrated circuit IC is connected to the negative terminal of the electrolytic capacitor C1, the fifth pin of the integrated circuit IC is connected to one end of the capacitor C2, and the other end of the capacitor C2 is connected to the integrated circuit IC.
  • the 3-pin, negative electrode of the electrolytic capacitor C1 is connected.
  • the output circuit is composed of an integrated circuit IC, a Schottky diode D5, an inductor L, and a high-power LED lamp, wherein: the fourth pin of the integrated circuit IC and the negative pole of the Schottky diode D5 and one end of the inductor L Connected, the other end of the inductor L is connected to the anode of the high-power LED lamp, and the cathode of the high-power LED lamp is connected to the anode of the Schottky diode D5 and the third pin of the integrated circuit IC.
  • the LED illuminator may be a single LED or a single LED assembly.
  • the MR16 type high-power LED lamp of the invention has the advantages of reasonable design, simple structure, stable circuit characteristics of the driver, high reliability, long service life, and the like, and can directly replace the conventional MR16 low-pressure tungsten halogen using the high-frequency electronic transformer as the input voltage. The lamp is used.
  • FIG. 1 is a block diagram of the principle of the present invention
  • FIG. 2 is a schematic diagram of the circuit of the present invention. The best mode for carrying out the invention
  • the MR16 type high power LED lamp provided by the embodiment includes a driver 5 and an LED illuminator 6 , wherein the driver is composed of a rectifier circuit 1 , a constant current circuit 2 , an output circuit 3 , and an input end of the rectifier circuit. 4 input power frequency I high frequency 12 volt low voltage AC.
  • the rectifier circuit 1 of the driver 5 comprises: a Schottky diode D1, D2, D3, D4, and an electrolytic capacitor CI, wherein: the Schottky diode D1 positive terminal is connected to the D3 negative terminal and then input.
  • the Schottky diode D2 anode is connected to the D4 anode and then connected to the other end of the input power supply.
  • the cathode of the Schottky diode D1 is connected to the anode of the D2 anode and the anode of the electrolytic capacitor C1 to form a positive polarity of the DC power source, and the Schottky diode D3 is positive.
  • the D4 positive electrode and the negative electrode of the electrolytic capacitor C1 are connected to form a negative polarity of the DC power source.
  • the constant current circuit 2 of the driver 5 comprises: an integrated circuit IC, a capacitor C2, and a resistor R, wherein: the first bow of the integrated circuit IC is connected to the anode of the electrolytic capacitor C1 and one end of the resistor R, and the integrated circuit IC The second pin is connected to the other end of the resistor R.
  • the third pin of the integrated circuit IC is connected to the negative terminal of the electrolytic capacitor C1, the fifth pin of the integrated circuit IC is connected to one end of the capacitor C2, and the other end of the capacitor C2 is integrated.
  • the third pin of the circuit IC and the negative electrode of the electrolytic capacitor C1 are connected.
  • the output circuit 3 of the driver 5 comprises: an integrated circuit IC: a Schottky diode D5, an inductor L, and a high-power LED illuminator 6, wherein: the fourth pin of the integrated circuit IC and the Schottky diode
  • the negative electrode of D5 is connected to one end of the inductor L, and the other end of the inductor L is connected to the positive electrode of the high-power LED illuminator 6.
  • the negative electrode of the high-power LED illuminator 6 and the positive electrode of the Schottky diode D5, and the integrated circuit IC 3 pins are connected.
  • Dl, D2, D3, D4, and D5 all use Schottky diodes, because the rectification of Schottky diodes is determined only by majority carriers, no redundant minority carrier recombination problems, significant improvement in switching characteristics, and recovery time. It is only the charge and discharge time of the barrier capacitor, so the reverse recovery time is less than 10 ns, and the forward voltage drop is smaller than the normal junction diode, and the typical value is about 0.4 V. The power consumption is low and the efficiency is high, which is due to its The above characteristics, in the high-frequency rectification technology, have excellent characteristics not possessed by other junction diodes, and the low-voltage drop characteristics of Schottky diodes in low-frequency rectification technology are beyond the reach of other junction diodes.
  • the Schottky diode can be effectively compatible with rectification under the conditions of power frequency AC (12V, frequency 50HZ) or high frequency AC (12V, frequency 20KHZ) input power.
  • the integrated circuit IC can be packaged in the form of TO-252 5L dedicated high power LED constant current chip AE7150.
  • the LED illuminator 6 is illuminated, and the value of the resistor R is adjusted to determine the current value of the LED illuminator 6, which is the constant current value.
  • the product formed by the invention has the maximum output and connection 3 X 1W high power LED illuminator 6. It can also be matched with 1 X 1W high power LED illuminator 6 or 1 X3w high power LED illuminator 6 .

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

Description

MR16型高功率 LED灯 技术领域
本发明涉及一种高功率 LED灯， 特别是一种能适应工频交流、 也能适应 高频交流且标称工作电压为 12VAC的 MR16型高功率 LED灯。 背景技术
目前现有的 MR16型高功率 LED灯一般均采用工频交流低压 12V作为工 作电压， 由于单纯工频交 低压 12V工作电压不能有效兼容采用高频电子变 压器输出的高频交流 12V作为输入电源、更不能用单纯工频低压 12V为工作电 压的 MR16型高功率 LED灯直接替代传统的采用高频电子变压器输出的高频 交流 12V作为工作电压的 MR16型低压卤钨灯。 从 MR16型高功率 LED灯的发 展趋势考虑、 其直接替代传统的低压卤钨灯是必然的。 现有技术中少数产品 虽然也具有适应工频、 高频交流低压 12V的特征、 但采用的技术复杂且使用 过多的元器件和过小的表贴封装件而影响其工作的可靠性， 进而造成成本偏 高会直接影响应用面的普及和直接替代传统 MR16型低压卤钨灯的可能。 目 前尚无技术成熟且特性稳定成本低的既适应工频交流低压也适应高频交流低 压的 MR16型高功率 LED灯应用于工程配套。 发明的公开
本发明的目的是为了解决上述现有技术中的不足而提供一种既能适应工 频交流、也能适应高频交流且标称工作电压为 12VAC的 MR16型高功率 LED 灯。
为了达到上述目的，本发明设计的 MR16型高功率 LED灯，它包括驱动 器和 LED发光体， 其中驱动器包括整流电路、恒流电路、输出电路， 整流电 路的输入端输入工频 I高频低压交流电， 所述整流电路由肖特基二极管 Dl、 D2、 D3、 D4、 电解电容器 CI共同组成， 其中： 肖特基二极管 D1正极与 D3负极相连后接输入电源一端， 肖特基二极管 D2正极与 D4负极相连后接 确 认 本 输入电源另一端， 肖特基二极管 D1负极与 D2负极、 电解电容器 C1的正极 相连后组成直流电源的正极性， 肖特基二极管 D3正极与 D4正极、电解电容 器 C1的负极相连后组成直流电源的负极性。 所述恒流电路由集成电路 ：、 电容 C2、 电阻 R共同组成， 其中: 集成电路 IC的第 1弓 I脚与电解电容器 C1 的正极、 电阻 R的一端相连， 集成电路 IC的第 2引脚与电阻 R的另一端相 连， 集成电路 IC的第 3引脚与电解电容器 C1的负极相连， 集成电路 IC的 第 5引脚与电容 C2的一端相连， 电容 C2的另一端与集成电路 IC的第 3引 脚、 电解电容器 C1的负极相连。 所述输出电路由集成电路 IC、 肖特基二极 管 D5、 电感器 L、 高功率 LED灯共同组成， 其中： 集成电路 IC的第 4引脚 与肖特基二极管 D5的负极、 电感器 L的一端相连， 电感器 L的另一端与高 功率 LED灯的正极相连， 高功率 LED灯的负极与肖特基二极管 D5的正极、 集成电路 IC的第 3引脚相连。
所述的 LED发光体， 可以是单只 LED, 也可以是单只 LED组合体。 本发明的 MR16型高功率 LED灯， 具有设计合理、结构简单、驱动器电 路特性稳定、 可靠性高、 使用寿命长等优点， 可直接替代采用高频电子变压 器作为输入电压的传统 MR16型低压卤钨灯使用。
附图的简要说明
本发明的附图简单说明如下：
附图 1是本发明原理方框图
附图 2是本发明电路原理图 实现本发明的最佳方式
实施例：
如图 1所示， 本实施例提供的 MR16型高功率 LED灯， 它包括驱动器 5 和 LED发光体 6， 其中驱动器由整流电路 1、 恒流电路 2、 输出电路 3组成， 整流电路的输入端 4输入工频 I高频 12伏低压交流电。如图 2所示，所述驱 动器 5的整流电路 1包括： 由肖特基二极管 Dl、 D2、 D3、 D4、 电解电容器 CI共同组成， 其中： 肖特基二极管 D1正极与 D3负极相连后接输入电源一 端， 肖特基二极管 D2正极与 D4负极相连后接输入电源另一端， 肖特基二极 管 D1负极与 D2负极、电解电容器 C1的正极相连后组成直流电源的正极性， 肖特基二极管 D3正极与 D4正极、 电解电容器 C1的负极相连后组成直流电 源的负极性。 所述驱动器 5的恒流电路 2包括： 由集成电路 IC、 电容 C2、 电阻 R共同组成， 其中： 集成电路 IC的第 1弓 与电解电容器 C1的正极、 电阻 R的一端相连， 集成电路 IC的第 2引脚与电阻 R的另一端相连， 集成 电路 IC的第 3引脚与电解电容器 C1的负极相连， 集成电路 IC的第 5引脚 与电容 C2的一端相连， 电容 C2的另一端与集成电路 IC的第 3引脚、 电解 电容器 C1的负^相连。 所述驱动器 5的输出电路 3包括： 由集成电路 IC：、 肖特基二极管 D5、 电感器 L、 高功率 LED发光体 6共同组成， 其中： 集成 电路 IC的第 4引脚与肖特基二极管 D5的负极、 电感器 L的一端相连， 电感 器 L的另一端与高功率 LED发光体 6的正极相连， 高功率 LED发光体 6的 负极与肖特基二极管 D5的正极、 集成电路 IC的第 3引脚相连。
Dl、 D2、 D3、 D4、 D5均采用肖特基二极管， 由于肖特基二极管的整流 作用仅决定于多数载流子、 没有多余的少数载流子复合的问题、 开关特性明 显改善、恢复时间仅是势垒电容的充放电时间、故其反向恢复时间小于 10ns、 且正向压降比普通结型二极管小、 典型值约为 0.4V, 功耗低、 效率高， 正由 于其具有的上述特征、 故在高频整流技术中有着其它结型二极管所不具备的 优良特性， 而在低频整流技术中肖特基二极管的低压降特性更是其它结型二 极管所不及的。 因此采用肖特基二极管可有效兼容无论是工频交流 (12V、 频 率 50HZ)还是高频交流 (12V、 频率 20KHZ)输入电源条件下的整流。集成电 路 IC可采用封装形式为 TO-252 5L专用高功率 LED恒流芯片 AE7150。 在输入 端 4加入低频交流 12V或是高频交流 12V时、 LED发光体 6被点亮， 调节电阻 R 的值以确定 LED发光体 6的电流值、此值即为恒流值。本发明形成的产品最多 输出配接 3 X 1W高功率 LED发光体 6、亦可配接 1 X 1W高功率 LED发光体 6或 1 X3w高功率 LED发光体 6。

Claims

权利要求
1、 一种 MR16型高功率 LED灯， 它包括驱动器 (5)和 LED发光体 (6)， 其中 驱动器 (5)包括整流电路 (1)、恒流电路 (2)、输出电路 (3)，整流电路的输入端 (4) 输入工频 I高频低压交流电，其特征是所述驱动器 (5)的整流电路 (1)由肖特基 二极管 Dl、 D2、 D3、 D4、 电解电容器 CI共同组成， 其中： 肖特基二极管 D1正极与 D3负极相连后接输入电源一端， 肖特基二极管 D2正极与 D4负 极相连后接输入电源另一端， 肖特基二极管 D1负极与 D2负极、电解电容器 C1的正极相连后组成直流电源的正极性，肖特基二极管 D3正极与 D4正极、 电解电容器 C1的负极相连后组成直流电源的负极性。
2、 根据权利要求 1所述的一种 MR16型高功率 LED灯， 其特征是所述驱动 器 (5)的恒流 路(2)由集成电路 IC、 电容 C2、 电阻 R共同组成， 其中： 集成 电路 IC的第 1引脚与电解电容器 C1的正极、 电阻 R的一端相连， 集成电路 IC的第 2引脚与电阻 R的另一端相连， 集成电路 IC的第 3引脚与电解电容 器 C1的负极相连， 集成电路 IC的第 5引脚与电容 C2的一端相连， 电容 C2 的另一端与集成电路 IC的第 3引脚、 电解电容器 C1的负极相连。
3、 根据权利要求 1或 2所述的一种 MR16型高功率 LED灯， 其特征是所述 驱动器 (5)的输出电路 (3)由集成电路 IC、 肖特基二极管 D5、 电感器 L、 高功 率 LED发光体共同组成，其中：集成电路 IC的第 4引脚与肖特基二极管 D5 的负极、 电感器 L的一端相连， 电感器 L的另一端与高功率 LED发光体的 正极相连， 高功率 LED发光体的负极与肖特基二极管 D5的正极、 集成电路 IC的第 3引脚相连。
PCT/CN2008/001982 2007-12-19 2008-12-08 Mr16 type high power led lamp Ceased WO2009079924A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP08865037A EP2293652A4 (en) 2007-12-19 2008-12-08 HIGH PERFORMANCE LED LAMP TYPE MR16
US12/993,313 US20110140632A1 (en) 2007-12-19 2008-12-08 MR16 Type High Power Led Lamp

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN200710164780.3 2007-12-19
CN2007101647803A CN101207954B (zh) 2007-12-19 2007-12-19 Mr16型高功率led灯

Publications (1)

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WO2009079924A1 true WO2009079924A1 (en) 2009-07-02

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Country Status (4)

Country Link
US (1) US20110140632A1 (zh)
EP (1) EP2293652A4 (zh)
CN (1) CN101207954B (zh)
WO (1) WO2009079924A1 (zh)

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US20110140632A1 (en) 2011-06-16

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