Microchip CL88020 120VAC 8．5W离线LED驱动方案
Microchip公司的CL88020是离线LED驱动器,输入电压120VAC,提供8.5W LED功率.器件包括CL88020 LED驱动器,六个电阻和桥式整流器.具有可编超温保护,允许THD优厚,可选择降低轻负载输出波纹,只使用一个外接陶瓷存储电容,TRIAC调光兼容,主要用在LED灯和LED照明固定装置.本文介绍了CL88020主要特性,框图和典型应用电路,以及120VAC离线LED驱动器板ADM00766和LED负载板ADM00767主要特性,电路图,材料清单和PCB设计图.
The CL88020 LED Driver Integrated Circuit (IC) is anoff-line sequential linear LED driver designed to provide8.5W of LED power from a 120 VAC nominal inputvoltage.
CL88020 is designed to drive a long string of inexpensive,low-current LEDs directly from the AC mains. Abasic driver circuit consists of Microchip TechnologyInc.’s CL88020 LED driver IC, six resistors and a bridgerectifier. Two to four additional components are optionalfor various levels of transient protection, also with alow-cost NTC to assure remote overtemperature protection(OTP). No capacitors, EMI filters, or power factorcorrection circuits are needed unless the optionalreduced light output ripple feature is desired.
..
