8.4.13.2 High-Side MOSFET Overcurrent Protection

The device also implements a fixed high-side MOSFET overcurrent protection to limit peak current, and prevent inductor saturation in the event of a short circuit. The device detects an overcurrent event by sensing the voltage drop across the high-side MOSFET during ON state. If the peak current reaches the IHOSC level on any given cycle, the cycle terminates to prevent the current from increasing any further. High-side MOSFET overcurrent events are counted. If the devices detect three consecutive overcurrent events (high-side or low-side), the converter responds by entering continuous restart hiccup.