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首頁 > 應用 > 照明 > 為2個高達1000mA的LED提供開路保護
 

為2個高達1000mA(PLED9)的LED提供旁路保護
解決方案:

 


 

設計說明:

保護應用:

LEDs are fragile solid-state devices. An LED is essentially a diode, structured as a PN junction that emits light when forward biased. One of the major causes of an electrical open in an LED is thermo-mechanical stress on the wire bonds. Other causes of LED open circuits are electrostatic discharge (ESD) events or surges induced by nearby lightning events. These threats are especially high in outdoor applications.

解決方案說明:

Open LED protection is designed as an electronic shunt which provides a current bypass in the case of an open circuit caused by a single LED failure. It is an internally triggered two-terminal device which automatically resets if the LED heals itself or is replaced. The protector is a voltage-triggered switch with low leakage on the order of microamps that becomes a low-impedance switch when it is triggered on, which minimizes power consumption. An LED in the on-state drops approximately 3.0V, which is not sufficient to turn on the protector device. Once an LED fails open, there is sufficient circuit voltage to trigger the protector to the on-state when it is placed in parallel with the LED.

PLED9 Series Devices Solution:

The PLED9 Series is designed to bypass 2 open LED in a string due to its minimum breakdown voltage of 9V.

The PLED9 Series can handle up to 1000mA of continuous current making them ideal for protecting 1W, 2W, and 3W LEDs


配套解決方案:

監管問題:如需考慮靜電放電問題,可查閱IEC 61000-4-2獲取測試方法和應採用的瞬態波形信息。

特性:應用警告:

     
 
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