50Vdc-60Vdc Input, 2-Channel, 350mA LED Driver (10V to 40V String)
View the Important Notice for TI Designs covering authorized use, intellectual property matters and disclaimers.
This reference design contains two duplicate LED drivers. Each circuit drives a 10V to 40V series connected string of LEDs at 350mA. The input range is 50VDC to 60VDC. The TPS40210 boost controller is used in an "upside-down" buck topology for a simple, low-cost solution. This circuit includes synchronization, enable, PWM dimming, current trimming, and a current sense functions for interfacing with an external microprocessor.