Patent ID: 7242168
Filing Date: 2007-07-10
Classification: H02M

Abstract:
1. A DC-DC voltage-switching converter regulator device for supplying power to various components in an automotive application, comprising: a driving input terminal for receiving electric power; a pair of first switch elements connected in series and receiving input power from said driving input terminal, a first medial tap arranged between said pair of first switch elements; an external inductor having a first inductor terminal connected to said first medial tap and a second inductor terminal; a pair of second switch elements connected in series and having a terminal tap connected to a power output terminal, a second medial tap arranged between said pair of second switch elements and connected to said second inductor terminal; and a further switch element connected to said power output terminal and providing an output with an inrush limited current, said converter regulator device outputting a negligible output current under control of a driving voltage below a first threshold voltage, outputting a Buck-Mode flat current level through alternating and mutually opposing conducting states of said pair of first switch elements in a Buck-Mode under control of a driving voltage above a second threshold voltage, and outputting a Boost-Mode flat current level that is substantially lower than said Buck-Mode current level through driving, by the inductor, the medial tap of said pair of second switch elements in a Boost-Mode under control of a driving voltage between said first and second thresholds.