ZHCSSS8 august 2023 TPS552872
PRODUCTION DATA
In addition to the average inductor current limit, the TPS552872 implements the output short-circuit protection by entering hiccup mode. After soft start-up time of 3.6 ms, the TPS552872 monitors the average inductor current and output voltage. Whenever the output short circuit happens, causing the average inductor current hitting the set limit and the output voltage below 0.8 V for 2 ms, the TPS552872 shuts down the switching for 76 ms (typical) and then repeats the soft start for 3.6 ms. The hiccup mode helps reduce the total power dissipation on the TPS552872 in the output short-circuit or overcurrent condition.