Patent ID: 7477045
Filing Date: 2009-01-13
Classification: H02M,Y02B

Abstract:
1. A multi-phase switched voltage converter for providing an output voltage to a load, the output voltage being produced from an input voltage in accordance with a desired voltage, the converter comprising: an output circuit adapted to be coupled to the load; a plurality of output switch units having respective output terminals coupled to the output circuit; the output switch units being controllable to provide respective phase output currents to the output circuit through the respective output terminals; a plurality of switch unit drivers in the form of separate integrated circuits respectively coupled to control the output switch units, the switch unit drivers being controllable to determine the respective phase output currents supplied by the output switch units such that each switch unit driver controls a duty cycle of switches in the respective output switch unit to which it is coupled; and a master control unit in the form of a separate integrated circuit coupled to drive each of the output switch unit drivers.