An apparatus is disclosed that includes a first node coupleable to a power supply (3), a charge storage component (25) coupled between a second node and a third node, and a first leg between the first node and second node. The first leg includes a first switching device (21 ). The apparatus includes a second leg between the first node and the third node. The second leg includes a second switching device (22). The apparatus includes a third leg between the second node and a fourth node. The third leg includes a third switching device (23). The apparatus includes a fourth leg between the third node and the fourth node, wherein the fourth leg includes a fourth switching device (24). The apparatus includes one or more contacts in one of the second leg or the third leg, the one or more contacts configured to be coupled to a load (12). Charging and load driving operations may be performed.