Why the 4A symmetric drive matters for your switching stage
The UCC27425DR delivers 4A peak source and 4A peak sink current — symmetric drive that charges and discharges the MOSFET gate at the same rate. That symmetry simplifies dead-time budgeting because the turn-on and turn-off delays match closely when driving the same capacitance. Rise time is 20ns typ, fall time 15ns typ. The 5ns asymmetry is small enough that most designs can treat them as equal for first-order loss calculations, but the faster fall helps ensure the MOSFET turns off before the complementary device turns on.
Supply range and gate-type flexibility
Supply voltage spans 4V to 15V, covering the common 5V and 12V rails used in industrial power stages. At 5V the driver still delivers full 4A peak; the output swing is rail-to-rail, so a 5V supply limits the gate drive to 5V — fine for logic-level MOSFETs but insufficient for standard 10V-threshold devices. Unlike most low-side drivers that only handle N-channel MOSFETs, this part also drives P-channel MOSFETs. That makes it useful for load switches or high-side drivers where the P-channel is ground-referenced through a bootstrap or charge pump. Input logic thresholds are 1V (VIL) and 2V (VIH), compatible with 3.3V and 5V logic families without level shifting. Both inverting and non-inverting inputs are available, so one driver channel can be configured as a buffer and the other as an inverter from a single PWM source.