3 Description

This user's guide describes the specifications, board connection descriptions, characteristics, operation, and use of the TPS92519-Q1, dual 2.0-A synchronous buck LED driver evaluation module (TPS92519EVM-169). The TPS92519-Q1 device implements an adaptive on-time average current mode control and is designed to be compatible with shunt FET dimming techniques and LED matrix manager-based dynamic beam headlamps. The adaptive on-time control provides near constant switching frequency that can be set to 385/435 kHz or 2/2.1 MHz. Inductor current sensing and closed-loop feedback enables better than ±4% accuracy over wide input voltage, output voltage and ambient temperature range.

TPS92519EVM-169 provides a high-brightness LED driver that is designed to operate with an input voltage in the range of 5.5 V to 65 V. The EVM is set up for a default output current of 2 A for an LED stack between approximately 3 V and nearly 60 V operating at 385/435 kHz. The TPS92519-Q1 helps provide high efficiency, fast PWM dimming, and accurate wide-range analog dimming.