An isolated DC-DC converter with +/-220V balanced outputs for telecom systems
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Data
2001-01-01
Autores
Seixas, F. J.M. [UNESP]
Bascopé, G. V.T. [UNESP]
Barbi, I. [UNESP]
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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 the pulse-width modulation is phase-shifted (PS-PWM). The high-frequency isolation transformer has two secondary windings to feed both the +220V and -220V DC outputs. The output filtering inductors are coupled together to balance the output voltages. A very simple command circuit, using only one integrated circuit, is employed to obtain regulated DC outputs and to drive the switches.
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IEE Conference Publication, n. 484, p. 197-204, 2001.