采用MAX16834設計的112W升壓LED驅(qū)動器技術(shù)
加入技術(shù)交流群
圖6.MAX16834升壓DC/DC轉(zhuǎn)換器
圖7.MAX16834升壓-降壓DC/DC轉(zhuǎn)換器
全陶瓷電容的112W升壓長串LED驅(qū)動器參考設計
112W boost driver for long strings of LEDs using all ceramic capacitors
This is a reference design for a 112.5W boost LED driver that uses the MAX16834 for long strings of LEDs. These long LED strings are commonly found in streetlights and parking garage lights.
Input voltage: 24VDC ±5% (at 1.49A)
VLED configuration: Two parallel strings. Each string consists of 19 WLEDs and a 5Ω resistor for current balancing. Current is 750mA per sting for a total of 1.5A into 75V.
Dimming: 50μs (min) on-pulse for up to a 200:1 dimming ratio with a 100Hz dimming frequency
圖8.112W升壓長串LED驅(qū)動器參考設計外形圖
圖9.112W升壓長串LED驅(qū)動器參考設計電路圖
112W升壓長串LED驅(qū)動器參考設計材料清單(BOM):
本文引用地址：http://www.antipu.com.cn/article/177085.htm
評論