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Hiccup mode. This mode provides overload protection to the power circuit. The UCC28951 controller stops switching after a certain time in current limit. It starts again (soft-start) after a delay time. The user can control the time spent in current limit before switching is stopped and the delay time before the soft start happens.
The hiccup mode with the restart can be disabled by the user if a pullup resistor of 261 k Ω is connected between the SS and VREF pins.
