Title :
A resonant DC-to-DC converter operating at 22 megahertz
Author :
Bowman, W.C. ; Balicki, J.F. ; Dickens, F.T. ; Honeycutt, R.M. ; Nitz, W.A. ; Strauss, W. ; Suiter, W.B. ; Ziesse, N.G.
Author_Institution :
AT&T Bell Labs., Parsippany, NJ, USA
Abstract :
An experimental DC-to-DC converter prototype based on a zero-voltage switching, resonant circuit topology is described. The converter is suitable for mounting directly on a circuit card. The unit provides a regulated 5 V output at power levels up to 50 W with an input between 40 and 60 V. The switching frequency is between 20 and 24 MHz, depending on the input voltage and load. Differential input and output ripple and EMI are extremely low and somewhat difficult to measure. The converter prototype has been designed to demonstrate compatibility with a fully automated assembly process based on surface-mount technology. Solutions are presented to a number of problems, including MOSFET gate-drive and rectifier diode capacitance, that have seriously limited the performance of high-frequency converters operating with useful input and output voltages
Keywords :
power convertors; 20 to 24 MHz; 22 MHz; 40 to 60 V; 5 V; 50 W; DC/DC power convertor; EMI; MOSFET gate-drive; high-frequency converters; power levels; rectifier diode capacitance; resonant circuit topology; ripple; surface-mount technology; switching frequency; zero-voltage switching; Assembly; Circuit topology; DC-DC power converters; Electromagnetic interference; Prototypes; RLC circuits; Resonance; Switching converters; Switching frequency; Zero voltage switching;
Conference_Titel :
Applied Power Electronics Conference and Exposition, 1988. APEC '88. Conference Proceedings 1988., Third Annual IEEE
Conference_Location :
New Orleans, LA
DOI :
10.1109/APEC.1988.10545
