A power converter integrated circuit with connection fault detection function

Abstract

An integrated circuit for a power conversion circuit includes: an input terminal, an output terminal, a reference ground terminal, a switching terminal, and an abnormal connection event detection circuit. The input terminal is configured to receive an input voltage. The output terminal is configured to provide an output voltage. The reference ground terminal is configured to be coupled to a reference ground voltage. The switching terminal is configured to be coupled at a common connection node of a high-side switch and a low-side switch, wherein the high-side switch and the low-side switch are coupled in series between the input terminal and the reference ground terminal. The abnormal connection event detection circuit is configured to detect an abnormal connection event in the power conversion circuit before the startup of the power conversion circuit, and generate an abnormal connection warning signal for indicating the abnormal connection event based on detecting that the abnormal connection event occurs.

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