A wireless power receiver (13') includes a rectifier with first (N2) and second (N4) inputs coupled to first and second terminals of a receiver coil (Ls), and having a first output (N1) coupled to ground and a second output (N3) at which a rectified voltage (Vrect) is produced. A first switch (SW1) is coupled between the second input (N4) and ground, and is controlled by a first gate voltage (Vgatel) generated at a first node (N5). A second switch (SW2) is coupled between the first node (N5) and ground, and is controlled by a second gate voltage (Vgate2). The first gate voltage (Vgatel) closes the first switch (SW1) to couple the second input (N4) to ground when the rectified voltage (Vrect) is less than a threshold voltage, boosting the rectified voltage. The second gate voltage (Vgate2) closes the second switch (SW2) to cause the second gate voltage (Vgate2) to be pulled to ground when the rectified voltage (Vrect) is greater than the threshold voltage, limiting the boosting of the rectified voltage.