Title :
A full bridge soft switched telecom power supply with a current doubler rectifier
Author :
Kutkut, Nasser H.
Author_Institution :
Soft Switching Technol. Corp., Middleton, WI, USA
Abstract :
This paper presents a full bridge soft switched PWM telecom power supply with a current doubler rectifier. The full bridge PWM DC-to-DC power converter offers high power handling capability, minimum VA ratings for the main devices, no additional auxiliary components and simple PWM-based control strategy. Phase shift control is employed to regulate the output voltage and achieve soft switching. The transformer leakage inductance is utilized effectively to achieve zero voltage turn-on for the main devices. The current doubler rectifier has only one diode conduction drop in addition to frequency doubling in the output capacitor. The transformer secondary winding current rating is one half the load current which improves the overall efficiency of the power converter
Keywords :
AC-DC power convertors; DC-DC power convertors; PWM power convertors; bridge circuits; field effect transistor switches; power MOSFET; power field effect transistors; power semiconductor switches; power transformers; rectifying circuits; switching circuits; telecommunication power supplies; transformer windings; PWM-based control strategy; VA ratings; current doubler rectifier; diode conduction drop; frequency doubling; full-bridge PWM DC/DC power converter; full-bridge soft-switched telecom power supply; phase shift control; power converter efficiency; power handling capability; transformer leakage inductance; transformer secondary winding current rating; zero voltage turn-on; Bridge circuits; Current supplies; DC-DC power converters; Power supplies; Pulse width modulation; Pulse width modulation converters; Rectifiers; Telecommunication control; Telecommunication switching; Voltage control;
Conference_Titel :
Telecommunications Energy Conference, 1997. INTELEC 97., 19th International
Conference_Location :
Melbourne, Vic.
Print_ISBN :
0-7803-3996-7
DOI :
10.1109/INTLEC.1997.645910
