UCD7138 Low-Side Power MOSFET Driver Texas Instruments UCD7138 Low-Side Power MOSFET Driver is a 4A and 6A single-channel MOSFET driver with body-diode conduction sensing and reporting. It is a high-performance driver that allows the UCD3138A digital PWM controller to achieve advanced synchronous-rectification (SR) control. The device contains a high-speed gate driver, a body-diode conduction-sensing circuit, and a turn-on delay optimization circuit. Texas Instruments UCD7138 Driver is suitable for high-power, high-efficiency isolated converter applications where SR dead-time optimization is desired.