Patent ID: 9030182
Filing Date: 2015-05-12
Classification: H02M

Abstract:
1. A controller for a DC to DC converter, the converter comprising a first electrically controlled switch in series connection with an inductor, wherein placing the first electrically controlled switch in a low impedance state causes a current flow in a first direction through the inductor to increase, and placing the first electrically controlled switch in a high impedance state causes the current flow in the first direction through the inductor to decrease, and wherein the controller is configured to operate the DC to DC converter in a first mode, and the controller is configured to operate the DC to DC converter in a low power mode, wherein the controller is configured to use information about a switching time of the first electrically controlled switch in the first mode to control a switching time of the first switch in the low power mode, and wherein the controller is configured to use a first switch on conduction time for which the first switch is conducting in a switching cycle of the DC to DC converter prior to entering the low power mode to determine a first switch on conduction time for which the first switch is conducting during a first switching cycle in the low power mode.