Patent ID: 9601997
Date: 2017-03-21
CPC Classifications: H02M

Claim:
1. A power converter comprising an output or filter capacitor having an equivalent series resistance similar to that of a ceramic capacitor, a control circuit including a direct output voltage feedback path, a current sensor for measuring current in said output or filter capacitor to produce a voltage signal proportional to current in said output or filter capacitor, wherein said current sensor includes a branch circuit in parallel with said output or filter capacitor, an arrangement for combining said signal proportional to current in said output or filter capacitor with a signal in said direct output voltage feedback path, a comparator for automatically calibrating said branch circuit to have a time constant substantially equal to a time constant of said output or filter capacitor, wherein said comparator compares a signal representing current in said branch circuit to a signal representing inductor current to develop a signal for adjusting said time constant of said branch circuit, and a transfer function circuit for said signal that is proportional to current in said output or filter capacitor whereby said transfer function circuit automatically adjusts damping of transient response of said power converter to a level that provides an optimal a desired settling time.