Aiming at the repetitive frequency output requirements of high voltage and high power, study and application of a drive circuit 2SD315A for high voltage repetitive frequency Supply is the same with repetitive frequency Marx generator. 2SD315A has high frequency, big drive current and imperfectible for direct short, current foldback circuit and power supply function. According to its operating principle and feature, combine power-supply system structure, on the basis of experiment, drive peripheral circuit and correlation parameter is design. It can drive single valve or two high-power IGBT in frequency 20kHz and corresponding impulse width, it can validity and reliability achieve IGBT direct short current foldback circuit and so on. Experiment result showed that the drive circuit has good drive capability and protection function in high-power IGBT driver.