SLUSDB2A August 2018 – December 2021 UCC28951
The UCC28951 controler has outputs OUTA, OUTB driving the active leg, initiating the duty cycle leg of power MOSFETs in a phase-shifted full bridge power stage, and outputs OUTC, OUTD driving the passive leg, completing the duty cycle leg, as it is shown in the typical timing diagram in Figure 8-1. Outputs OUTE and OUTF are optimized to drive the synchronous rectifier MOSFETs (see Figure 8-3). These outputs have 200-mA peak-current capabilities and are designed to drive relatively small capacitive loads like inputs of external MOSFET or IGBT drivers. Recommended load capacitance should not exceed 100 pF. The amplitude of the output signal is equal to the VDD voltage.