Patent ID: 9362818
Filing Date: 2016-06-07
CPC Classification: H02M

Claim Text:
1. A charge pump comprising: an input, an output, and a fixed voltage node; a first flying capacitor and a second flying capacitor, each having a first terminal and a second terminal; a plurality of switches configured to selectively couple the first terminal and the second terminal of the first flying capacitor and the second flying capacitor to the input, the output, and the fixed voltage node, the plurality of switches consisting of eleven switches; a switch controller configured to open and close select ones of the plurality of switches in response to a first phase signal, a second phase signal, and a third phase signal in order to provide at the output a set of fixed gains of a voltage at the input comprising ¼ and ¾; and a phase generator configured to generate the first phase signal, the second phase signal, and the third phase signal, wherein a duty cycle of one of the first phase signal, the second phase signal, and the third phase signal is different from a duty cycle of one other of the first phase signal, the second phase signal, and the third phase signal.