Patent ID: 6765371
Filing Date: 2004-07-20
Classification: H02M,Y10S

Abstract:
A control method for a non-isolated DCâ€”DC converter comprising at least two switching elements connected to a coil and a control circuit for performing direct-current power conversion by operating the at least two switching elements in mutually inverted phases, the method characterized by comprising the steps of:performing soft-start control for gradually increasing an on-duty period of one of the switching elements at the beginning of an operation; holding the other switching element off during soft-start control; the soft-start control is terminated after a current flowing through a junction of the DCâ€”DC converter with the first or second charge/discharge unit has exceeded a predetermined threshold; the DCâ€”DC converter is so connected as to be located between a first charge/discharge unit and a second charge/discharge unit and supplies direct-current power from one of the charge/discharge units to the other; the switching elements include a first switching element and a second switching element; the first switching element is connected at one end to the first charge/discharge unit and at the other end to one end of the second switching element and one end of the coil; and the coil is connected at the other end to the second charge/discharge unit.