Design for a Four-Stage DC/DC High-Voltage Converter with High Precision and a Small Ripple

This paper presents a four-stage DC/DC converter with high precision and small ripple utilized in an electronic power conditioner (EPC). The galvanically isolated topology contains four cascade connections: buck circuit, push–pull converter, voltage regulator. switches, as well the diodes output-side rectifier, operate zero-voltage switching (ZVS) zero-current (ZCS) modes at both switch off on, which helps increase efficiency. maximum efficiency of can reach 94.5%. circuit regulator two-stage closed-loop condition and, thus, is greater than 0.02%. Due to regulator, less 1 V when output reaches 7000 V.