Patent ID: 7816806
Filing Date: 2010-10-19
Classification: H02J,H02M

Abstract:
1. A power supply device, comprising: a direct-current (DC) voltage source; an auxiliary voltage source that has one end coupled to a positive terminal of the DC voltage source; a load that consumes power; an inductance element that has one end coupled to the load; a first switching element that is coupled to an other end of the inductance element and to an other end of the auxiliary voltage source, and applies a total voltage of the DC voltage source and the auxiliary voltage source to the inductance element by repeating intermittent switching on/off; a second switching element that is coupled to the other end of the inductance element, and applies a voltage of the DC voltage source to the inductance element by repeating intermittent switching on/off alternately with the first switching element so that one of the first switching element and the second switching element is switched on;