采用MAX16834设计的112W升压LED驱动器技术

图6.MAX16834升压DC/DC转换器

图7.MAX16834升压-降压DC/DC转换器

全陶瓷电容的112W升压长串LED驱动器参考设计

112Wboost driver for long strings ofLEDs using all ceramic capacitors

This is a reference design for a 112.5W boostLEDdriver that uses theMAX16834for 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

图8.112W升压长串LED驱动器参考设计外形图

图9.112W升压长串LED驱动器参考设计电路图

112W升压长串LED驱动器参考设计材料清单(BOM):

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