Maxim MAX16834 112W升压LED驱动器参考设计

Maxim公司的 MAX16834 是电流模式高亮LED(HBLED)驱动器,可用于升压,升压-降压,SEPIC和高边降压拓扑. 工作电压4.75V 到 28V,3000:1 PWM调光/模拟调光,可编频率从100kHz到1MHz,主要用在单串LED LCD背光,汽车前后照明,投映系统RGB LED光源,点和环境照明以及DC/DC升压/升-降压转换器.本文介绍了MAX16834主要特性,方框图,多种应用电路以及112W升压LED驱动器参考设计,电路图和材料清单(BOM).

The MAX16834 is a current-mode high-brightness LED (HB LED) driver for boost, boost-buck, SEPIC, and highside buck topologies. In addition to driving an n-channel power MOSFET switch controlled by the switching controller, it also drives an n-channel PWM dimming switch to achieve LED PWM dimming. The MAX16834 integrates all the building blocks necessary to implement a fixed-frequency HB LED driver with wide-range dimming control.

The MAX16834 features constant-frequency peak current- mode control with programmable slope compensation to control the duty cycle of the PWM controller.
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