[原创] Maxim MAX16833高压高亮(HB) LED驱动方案

Maxim公司的MAX16833/B/C/D/G是峰值电流控制的LED驱动器,适用于升压,降压-升压,SEPIC,反激和高边降压拓扑.输入电压5V-65V,最大输出电压65V,集成了高边pMOS调光MOSFET驱动器和高边电流检测放大器,可编工作频率100kHz 到1MHz,具有短路,过压和热关断保护以及故障指示输出,工作温度-40°C到+125°C,主要用在汽车外部照明装置,商业,工业和建筑物照明.本文介绍了MAX16833优势和特性,功能框图,以及评估板MAX16833 EVK主要特性,电路图,材料清单和PCB设计图.

 The MAX16833, MAX16833B, MAX16833C, MAX16833D, and MAX16833G are peak current-mode-controlled LED drivers for boost, buck-boost, SEPIC, flyback, and high-side buck topologies. A dimming driver designed to drive an external p-channel in series with the LED string provides wide-range dimming control. This feature provides extremely fast PWM current switching to the LEDs with no transient overvoltage or undervoltage conditions. In addition to PWM dimming, the ICs provide analog dimming using a DC input at ICTRL. The ICs sense the LED current at the high side of the LED string.
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