An isolated DC-DC converter with 220 V balanced outputs for telecom systems

摘要: This work proposes a new strategy to improve the double-output DC-to-DC converter. The isolated full-bridge topology is zero-voltage switched (ZVS) and pulse-width modulation phase-shifted (PS-PWM). high-frequency isolation transformer has two secondary windings feed both +220V -220V DC outputs. output filtering inductors are coupled together balance voltages. A very simple command circuit, using only one integrated employed obtain regulated outputs drive switches.