Each totem pole output of the UC1825B-SP can deliver a 2-A peak current into a capacitive load. The output can slew a 1000-pF capacitor by 15 V in approximately 20 ns. Separate collector supply (VC) and power ground (PGND) pins help decouple the analog circuitry of the device from the high-power gate drive noise. The use of
3-A Schottky diodes (1N5120, USD245, or equivalent) as shown in the Figure 10-1 from each output to both VC and PGND are recommended. The diodes clamp the output swing to the supply rails, necessary with any type of inductive or capacitive load, typical of a MOSFET gate, as shown in Figure 7-5. Schottky diodes must be used because a low forward voltage drop is required.

Figure 7-5 Power MOSFET Drive Circuit