Patent ID: 9118238
Filing Date: 2015-08-25
Classification: H02M

Abstract:
1. An electronic system comprising: a charge pump driver operable for generating an output to control a switch; a clock generator, coupled to said charge pump driver, operable for generating a clock signal to control said charge pump driver, operable for adjusting a frequency of said clock signal to a first value thereby increasing said output of said charge pump driver to turn on said switch, and operable for adjusting, in response to sensing that said output is greater than a predetermined voltage level, said frequency to a second value that is less than said first value and keeps said switch turned on; and a sensor, coupled to said switch and said charge pump driver, operable for sensing said output of said charge pump driver and a source voltage at a source terminal of said switch, generating a control signal indicative of a voltage difference between said output and said source voltage, and controlling said clock generator according to said control signal.