Patent ID: 7772918
Filing Date: 2010-08-10
Classification: H02M

Abstract:
1. A voltage boost charge pump for an integrated circuit (IC) device, the charge pump comprising: a first network including a first switch connected in series with a second switch, the first network having (i) a first input connected to a voltage rail of a DC voltage source of the IC device and (ii) a first output; a second network including a third switch connected in series with a fourth switch, the second network having (i) a second input connected to the voltage rail and (ii) a second output; a first capacitor connected between a common node of the first and second switches and a common node of the third and fourth switches; an output capacitor connected between the first output and a ground rail of the DC voltage source, the output capacitor coupled to an output terminal of said charge pump; a regulating transistor connected between the second output and the ground rail; a feedback module including a differential error amplifier having a first input network, a second input network, and an output connected to a gate terminal of the transistor; and a controller configured for alternating states of said switches in a pre-selected timing relationship with a clock signal of the IC device.