FIG. 2 illustrates a schematic diagram of an inverter 114, as may be used in a wireless power transmitter (PTx) of a wireless power transfer system. The illustrated inverter is a half bridge inverter, so named because the switching devices Q1 and Q2 form a half bridge that selectively couples input DC voltage Vin or ground to the switching node Vsw, thus generating an alternating voltage at this terminal. Switches Q1 and Q2 are illustrated as n-channel MOSFETs, although other suitable switching devices, including but not limited to p-channel MOSFETs could also be used. Switches Q1 and Q2 may be driven substantially complementarily, so that when Q1 is turned on (via a drive signal applied to Gate1), Q2 is turned off (via a drive signal applied to Gate2), and vice versa. The drive of switches Q1 and Q2 is “substantially” complementarily, as a short dead time may be provided at each switching transition to ensure that the switch being turned off before the counterpart switch is turned on. This can prevent short circuiting the input voltage. Additionally, controlling the timing of the switching transitions (e.g., switching frequency, duty cycle, etc.) can be used to control the output voltage (and thus the power delivered) by the inverter.