Disconnect switch for boost converter

A method comprising:

• providing an input voltage to an inductor coupled between an input power supply node and a switch node;
• generating, using a converter circuit, a particular voltage level on a boost node using a voltage level present on the switch node;
• providing, using an output circuit, the particular voltage level on a regulated power supply node using a voltage level of the boost node;
• isolating, using the output circuit, the boost node from the regulated power supply node in response to determining that the regulated power supply node have been shorted to ground;
• and
• clamping, using the output circuit, a voltage between the boost node and the regulated power supply node, in response to a detection of a regulation event.

A system comprising:

• an input voltage source configured to generate an input voltage on an input voltage node;
• a multi-phase boost converter comprising a plurality of phases coupled between the input voltage node and a common boost node, wherein ones of the plurality of phases include:
• an inductor coupled between the input voltage node and a switch node;
• a first switch coupled between the switch node and a ground node;
• and
• a second switch coupled between the switch node and a boost node;
• and
• an output circuit including a pass device coupled between the boost node and a regulated supply voltage node, wherein the output circuit is configured to:
• operate in a first mode, wherein operating in the first mode includes an analog driver controlling the pass device, and wherein operating in the first mode further includes clamping a voltage between the boost node and the regulated supply voltage node in response to a detection of a regulation event;
• and
• operate in a second mode, wherein operating in the second mode includes a digital driver controlling the pass device to provide a regulated supply voltage, based on a voltage on the boost node, to the regulated supply voltage node.