New design and development for an ultrahigh-voltage short pulse switch power supply

Takayanagi, Tomohiro   ; Ueno, Tomoaki*; Horino, Koki*

We will present presentation on the design of super high voltage short pulse switch using SiC - MOSFET operating at high withstand voltage, low loss, high frequency and high temperature, aiming at sophistication of pulse electromagnet power supply for 3 GeV synchrotron accelerator. This switch has a radially symmetric type of a module switch which does not cause level fluctuation due to the timing jitter by equalizing the circuit length independently of the number of semiconductor switches. By connecting these modules hierarchically in series, it is possible to cope with high voltage and current output of 40kV/2kA or more. The design and preliminary test results are presented here.