The ISO5852S device has both, inverting and noninverting gate-control inputs, an active-low reset input, and an open-drain fault output suitable for wired-OR applications. The recommended application circuit in Figure 10-2 shows a typical gate-driver implementation with unipolar output supply. Figure 10-3 shows a typical gate-driver implementation with bipolar output supply using the ISO5852S device.

A 0.1-μF bypass capacitor, recommended at the input supply pin V_CC1, and 1-μF bypass capacitor, recommended at the V_CC2 output supply pin, provide the large transient currents required during a switching transition to ensure reliable operation. The 220-pF blanking capacitor disables DESAT detection during the off-to-on transition of the power device. The DESAT diode (D_DST) and the 1-kΩ series resistor on the DESAT pin are external protection components. The R_G gate resistor limits the gate-charge current and indirectly controls the rise and fall times of the IGBT collector voltage. The open-drain FLT output and RDY output have a passive
10-kΩ pullup resistor. In this application, the IGBT gate driver is disabled when a fault is detected and does not resume switching until the microcontroller applies a reset signal.

Figure 10-2 Unipolar Output Supply

Figure 10-3 Bipolar Output Supply