SYNCHRONOUS RECTIFIER BI-DIRECTIONAL CURRENT SENSOR

摘要

A method and apparatus for bi-directional current sensing for a synchronous rectifier bi-directional converter system is disclosed. A first current is measured through a first synchronous rectifier via a first transformer to provide a first signal. A second current is measured through a second force synchronous rectifier via a second transformer to provide a second signal. The first signal and the second signal are DC restored to provide a first DC restored signal and a second DC restored signal respectively. A first correction current is added to the first DC restored signal to produce a first corrected signal, and a second correction current is added to the second DC restored signal to produce a second corrected signal. The first corrected signal and the second corrected signal are added to produce a combined signal.