Patent ID: 8963520
Filing Date: 2015-02-24
Classification: G05F,H02M

Abstract:
1. A system comprising: a feedback module that communicates with a capacitor connected across an output of a power converter and that generates a feedback voltage indicating a pre-bias voltage across the capacitor before power is supplied to the power converter; a comparator that compares the feedback voltage to a reference voltage and that determines whether the pre-bias voltage across the capacitor is greater or less than a desired output voltage of the power converter when power is supplied to the power converter; a ramp generator module that generates a first ramp in response to the pre-bias voltage being less than the desired output voltage and that generates a second ramp in response to the pre-bias voltage being greater than the desired output voltage; and a control module that drives a high-side switch and a low-side switch of the power converter to charge the capacitor from the pre-bias voltage to the desired output voltage based on the first ramp, or discharge the capacitor from the pre-bias voltage to the desired output voltage based on the second ramp, and that controls the high-side switch and the low-side switch of the power converter after a voltage across the capacitor reaches the desired output voltage.