Patent ID: 6346798
Filing Date: 2002-02-12
Classification: H02J,H02M

Abstract:
A power supply system comprising:a plurality of DCâ€”DC converters connected in parallel and functioning in a pulse width modulation (PWM) mode, each DCâ€”DC converter comprising a PWM modulator; a current sharing bus (CSB) connected to parallel inputs of said plurality of DCâ€”DC converters; and a respective logic circuit for each DCâ€”DC converter for interfacing between said CSB and an output of a respective PWM modulator for controlling current sharing among said DCâ€”DC converters, each logic circuit comprising a first monostable circuit defining a first time interval, and having an input coupled to said CSB, and an output for providing a low level logic signal as long as a driving signal with a predetermined switching frequency is present on said CSB, a driving stage for driving said CSB, and a second monostable circuit defining a second time interval, and having an input coupled to said driving stage.