Patent ID: 9047933
Filing Date: 2015-06-02
Classification: G11C

Abstract:
1. A circuit to supply voltage levels to a load circuit, comprising: driver circuitry connectable to supply at least a first voltage level and a second voltage level to the load circuit; a first switch through which the driver circuitry is connectable to the load circuit; a second switch connected between a third voltage level and a first node between the first switch and the load circuit, wherein the second voltage level is intermediate to the first and third voltage levels; a resistance, where the resistance is connected in series with the second switch between the third voltage level and the first node; and control circuitry connectable to control the first and second switches, including a feedback circuit having a comparator having a first input connected to a second node between the first switch and the load circuit and a second input connected a reference voltage level, wherein when the driver circuitry changes from supplying the first level to the second level, the control circuitry initially opens the first switch and closes the second switch and, based on the output of the comparator, subsequently closes the first switch and opens the second switch.