DC/DC Converter with Shunt Circuitry

摘要

The present disclosure provides, in one embodiment, a method of shunting a power supply to reduce output ripple. The method includes determining at least one performance parameter of a DC/DC converter circuit; generating a first reference signal, wherein the first reference signal is based on the performance parameter; comparing the first reference signal to the performance parameter; and generating a shunt current from an input power source to an output node of the DC/DC converter circuit based on, at least in part, the comparison of the performance parameter and the first reference signal.

主权项

1. A power supply system, comprising:
DC/DC converter circuitry configured to deliver power to an output node to power load circuitry coupled to the output node; the DC/DC converter circuitry comprising pulse width modulation (PWM) controller circuitry configured to generate a PWM signal having a duty cycle proportional to an amount of power delivered to the output node; and shunt circuitry coupled between an input power source and the output node, the shunt circuitry is configured to generate a shunt current from the input power source to the output node based on, at least in part, a comparison of the duty cycle of the PWM signal and a first duty cycle reference signal.