Patent ID: 9118246
Filing Date: 2015-08-25
Classification: H02M

Abstract:
1. A multiple-output DC-to-DC converter operable in a continuous conduction mode comprising: an inductor having a first inductor terminal and a second inductor terminal; a current controller coupled to the inductor, wherein the current controller comprises a voltage source and an input switch; a freewheel switch operable to couple the first inductor terminal to the second inductor terminal during a freewheel phase of the multiple-output DC-to-DC converter; a plurality of output switches; and a controller coupled to the freewheel switch, to the current controller, and to the output switches, characterized in that the controller is operable to measure a duration of the freewheel phase and to modify a current supplied to the inductor dependent on the duration of the freewheel phase, wherein the controller is further operable to increase a peak current supplied to the inductor by the current controller when the duration of the freewheel phase is less than a first value, and to decrease the peak current supplied to the inductor by the current controller when the duration of the freewheel phase is greater than a second value, and wherein the controller is configured to close the freewheel switch and to open the input switch and the output switches during the freewheel phase, to close the input switch and a first output switch and to open the freewheel switch, a second output switch, and a third output switch during a first phase of a cycle of the multiple-output DC-to-DC converter, and to close the input switch and to open the first, second, and third output switches and the freewheel switch during a second phase of the cycle of the multiple-output DC-to-DC converter.