适用于线性调光驱动的高效TRIAC调光器电流维持电路

High-efficiency TRIAC Dimmer Current Maintenance Circuit Suitable for Linear Dimming driver

适用于TRIAC(三端双向交流开关)调光的LED线性驱动电源中需要TRIAC调光器电流维持电路解决LED闪烁问题。本文介绍了常规线性调光驱动中的TRIAC调光器电流维持电路的工作原理及存在优劣性,提出一种高效TRIAC调光器电流维持电路设计,电路效率比传统方案提升10%以上,且具有更宽的调光深度。

In the TRIAC(TRIode AC switch) dimmable linear LED driver, TRIAC dimmer current maintenance circuit is used to reduce the LED flicker. This article introduces the working principle and advantages and disadvantages of TRIAC dimmer current maintenance circuit in conventional linear dimming driver, and puts forward the design of a high-efficiency TRIAC dimmer current maintenance circuit, which improves the efficiency by 10% compared with the traditional scheme and has wider dimming range.