The single sustaining driver (SSD) for an ac plasma display panel (ac-PDP) can simplify and optimize the circuit part of the PDP; however, it suffers from twice the high voltage stress of switches compared with the conventional sustaining driver. To solve this problem, a new SSD employing a voltage stress reduction technique is proposed. By adjusting the gate timing with the proposed simple structure, the voltage stresses of all devices are effectively ensured at the sustaining voltage.