SWITCHING CONVERTER WITH PRE-CHARGE CIRCUIT

原文（中文）

A switching converter has an input terminal, an output terminal, a switching circuit, a flying capacitor, and a pre-charge circuit. The input terminal receives an input voltage, the output terminal provides an output voltage. The switching circuit has a plurality of switch devices. The flying capacitor is coupled between at least two of the plurality of switch devices. The pre-charge circuit charges the flying capacitor via partially turning on a pre-charge switch during start-up of the switching converter. A first terminal of the pre-charge switch is coupled to the input terminal. A voltage at a second terminal of the pre-charge switch is controlled to follow a voltage at a control terminal of the pre-charge switch, and a voltage across the flying capacitor is controlled to increase when the input voltage increases.