RESET VOLTAGE CIRCUIT FOR A FORWARD POWER CONVERTER

摘要

A reset voltage circuit for a forward power converter includes a reset capacitor and a memory capacitor. The reset capacitor is to be coupled to recycle energy from a primary winding of a transformer to an input bulk capacitor during a resetting of the transformer. The memory capacitor is to be coupled to store a first voltage equal to an input voltage of the power converter when the input voltage is at a steady-state value. The memory capacitor is further to set a voltage across the primary winding during the resetting of the transformer to a magnitude greater than or equal to the first voltage when the input voltage of the forward power converter drops below the steady-state value.