The characteristics of the sustain-driving circuit were examined in this paper. The sustain-driving circuit is in charge of the most important part of PDP driving because it manages most of the power consumption in the PDP. A couple of gatedriving circuits for the sustain-driving circuit were introduced in this paper, and a new driving circuit was also proposed. This new circuit is more cost-effective and has a simpler PCB layout compared to the conventional one. Some additional driving advantages were noted as well.