Design Of A Digital High-Voltage Power-Supply Based On CPLD

The high-voltage power supply is the important component of the radar transmitter, it provides power sources and so on negative pole or collecting electrode for the transmitter microwave tube, its volume and performance have decided transmitter's performance. This article studies the high-voltage power supply has applied the new digital control technology, can eliminate the influence which the analogue control electric circuit floats warm brings, increases the control precision, consummates the protection function, the enhancement reliability, is advantageous for the debugging and the promotion.This power supply is one kind of digitized high voltage DC switching voltage-stabilized source, has studied the phase shifting full bridge ZVS-PWM principle of work, the movement pattern and the optimized model, has discussed the radar transmitter high-voltage power supply's digital control method. Used the soft switch technology in the research to raise the transfer efficiency of the power supply invertors, used the phase shifting full bridge control pulse-duration modulation technology (PSC FB ZVS-PWM) to realize the power switching component's zero potential soft switch. And it has given the design method of the essential part in the phase shifting full bridge ZVS-PWM power conversion electric circuit.Finally, this article also has the problem to this power supply in the low temperature and low atmospheric pressure environmental testing to give the solution. Enters the actual combat for the digitization radar transmitter system to apply prepares for the theory and practice.