Patent ID: 8159845
Filing Date: 2012-04-17
Classification: H02M

Abstract:
1. A current-sharing power supply apparatus applied to regulate voltage level of an input DC voltage, the current-sharing power supply apparatus comprising: a conversion circuit having two transformers, and each of the transformers having a primary winding and a secondary winding; wherein the secondary windings of the two transformers of the conversion circuit, which have a first secondary winding and a second secondary winding, respectively, are electrically connected in series; a square-wave generating circuit electrically connected to the DC voltage; a resonant circuit electrically connected to the square-wave generating circuit and having at least one first capacitor and the primary windings of the transformers of the conversion circuit; a rectifier circuit electrically connected to the secondary windings of the transformers of the conversion circuit; a filter circuit electrically connected to the rectifier circuit and having at least one second capacitor; a first output terminal electrically connected to a rear end of the filter circuit to output a filtered first output voltage; a second output terminal electrically connected between the first secondary winding and the second secondary winding to output a second output voltage; wherein the second output voltage is one half of the first output voltage.