Patent ID: 7304461
Filing Date: 2007-12-04
Classification: H02M,Y02B

Abstract:
1. A voltage-boosting/lowering DC/DC converter including a low-voltage-side port and high-voltage-side port, said voltage-boosting/lowering DC/DC converter comprising: an inductor connected at one end to a positive-pole terminal of the low-voltage-side port; a transformer of a magnetic-field cancellation type including a primary winding and secondary winding interconnected in an oppositely-wound configuration, a common terminal of the primary winding and secondary winding being connected to another end of said inductor; first switching means for controlling an energizing current of the primary winding which flows to a common reference terminal; second switching means for controlling the energizing current of the primary winding which flows to a positive-pole terminal of the low-voltage-side port; third switching means for controlling an energizing current of the secondary winding which flows to the common reference terminal; and fourth switching means for controlling the energizing current of the secondary winding which flows to the positive-pole terminal of the low-voltage-side port.