Patent ID: 8957657
Filing Date: 2015-02-17
Classification: G05F,H02M,H03K

Abstract:
1. A DC-DC converter system, comprising: power stage circuitry comprising a plurality of power segments coupled in parallel, said power stage circuitry is coupled between an input voltage and output stage circuitry and configured to deliver power to a load coupled to said output stage circuitry; and pulse width modulation (PWM) and power stage controller circuitry configured to sequentially and progressively activate said plurality of power segments to limit an input in-rush current from said input voltage during a ramp up period and output voltage at said output stage circuitry, said PWM and power stage controller circuitry comprising a voltage threshold selection and comparator circuit configured to select an output voltage threshold from a plurality of output voltage thresholds and compare said selected output voltage threshold to said output voltage and to activate one of said power segments associated with said selected output voltage threshold.