Patent ID: 9054575
Filing Date: 2015-06-09
Classification: H02M

Abstract:
1. A voltage converter comprising: a switch matrix having a plurality of mode configurations, each of the plurality of mode configurations corresponding to one of a plurality of voltage levels of an output signal, the switch matrix being configured to operate in a selected one of the plurality of mode configurations in response to a mode selection signal; a capacitor circuit including capacitors, the switch matrix configured to interconnect the capacitors differently between a voltage potential and an output node in different mode configurations of the plurality of mode configurations; a comparator circuit configured to produce a direction comparison signal based on a comparison of the output signal with a reference signal, the comparator circuit also including a plurality of comparators each having a first input configured to receive a different voltage than the other of the plurality of comparators; and control logic configured to produce the mode selection signal based on the direction comparison signal and one or more outputs of the plurality of comparators.