Patent ID: 8519691
Filing Date: 2013-08-27
Classification: H02M,Y02B

Abstract:
1. A method of current limiting in a DC-DC converter comprising: monitoring, when a high side switch is turned on, whether a first signal indicative of the current in the converter is above a first threshold; in the event that the first signal is above the first threshold, turning the high side switch off; monitoring, when the high side switch is turned off, whether a second signal indicative of the current in the converter is above a second threshold; and in the event that the second signal is above the second threshold, inhibiting turn on of the high side switch, wherein said monitoring of the second signal with respect to the second threshold is applied independently of said monitoring of the first signal with respect to the first threshold, such that turn-on of the high side switch is inhibited if the second signal is above the second threshold irrespective whether or not the high side switch was turned off because the first signal was above the first threshold.