Smart time control for switching among various phases of a device via a single capacitor

Abstract

An apparatus includes a first current source configured to provide a first bias current and a second current source configured to provide a second bias current, wherein the first bias current is larger than the second bias current. The apparatus further includes a current switch configured to receive the first bias current and the second bias current at its two input terminals and provide an output current at an output terminal, wherein the output current is one of the first bias current and the second bias current selected by a current switch control signal to the current switch. The apparatus further includes a capacitor coupled between the output terminal and a ground terminal, wherein the capacitor is charged by the output current and provides an output voltage at the output terminal.

Dependencies are inferred from the claim text.