Circuit design of high voltage switching power supply

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Summary:

With the continuous development and maturity of power supply technology, switching power supply is widely used in various fields as a power conversion device with small size, light weight, high frequency and high efficiency. Radar displays, as the "eyes" of radar systems, require high reliability, while the reliability of their power supplies is even higher.

The following are the technical requirements for a high-voltage power supply for a radar display:
(1) Input voltage: 400 Hz / 220 V ± 10%
(2) Output voltage: +4 500 V -1 600 V
(3) Output current: +4 500 V/1 mA-1 600V/1mA
(4) Load stability: ≤10-3
(5) Voltage stability: ≤ 5 × 10 -3
(6) Output voltage ripple: ≤ 1 × 10 -3
(7) MTBF: ≥ 5 000 h
(8) Delay time: ≥20 s

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