Abstract
The T/R module in the phased array radar is a pulsed power load that requires a constant voltage and pulsed current. Thus, the power supply of T/R module is a low-voltage low-frequency pulsed power supply (PPS). Traditionally, to provide the pulsed power, a very large storage capacitor is needed, which leads to large size and reduced power density. To reduce the storage capacitor, in this paper, a two-stage PPS with small capacitor and ultra-fast dynamic response is proposed. Two feedforward control loops imposing on the front-end and rear-end stages respectively are proposed to achieve the ultra-fast dynamic response. The design of the key components in the PPS is also introduced. Finally, a prototype with the peak output power of 2.8kW, the average output power of 840W, and the pulse repetitive frequency (PRF) of 100Hz is fabricated and tested in the laboratory. The experimental results are presented to verify the validity of the theoretical analysis.
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