TY - GEN
T1 - A resonant DC-DC transformer
AU - Ivensky, Gregory
AU - Abramovitz, Alexander
AU - Gulko, Michael
AU - Ben-Yaakov, Sam
N1 - Publisher Copyright:
© 1992 IEEE.
PY - 1992/1/1
Y1 - 1992/1/1
N2 - The characteristics of a Push-Pull Parallel Resonant Converter PPRC when operated as a DC-DC transformer were investigated theoretically and experimentally. In the DC-DC transformer region, the voltage transfer ratio was found to be practically constant and independent of the input voltage and load. In this mode, all the switching elements operate in the Zero Voltage Switching (ZVS) condition. This helps to achieve high efficiency at high switching frequencies. Another important feature of the proposed DC-DC transformer is the ability to be driven by an arbitrary switching frequency, provided that it is lower than the self oscillating frequency. This permits the synchronization of the converter to a master clock to obtain a stable signal spectrum of a desired base frequency. The analytical expression for the peak voltages and currents, derived in this paper, are applied to develop design guidelines for the proposed DC-DC converter. The proposed topology was tested experimentally on a 100 Watt unit which was run at the 200KHz frequency region. The basic characteristics of the proposed PPRC based DC-DC transformer which include: simplicity, robustness, isolation, ZVS, constant transfer ratio, relatively low current stress and the ability to be synchronized to an external frequency source make it a viable candidate for a master power processor in multiple output configurations.
AB - The characteristics of a Push-Pull Parallel Resonant Converter PPRC when operated as a DC-DC transformer were investigated theoretically and experimentally. In the DC-DC transformer region, the voltage transfer ratio was found to be practically constant and independent of the input voltage and load. In this mode, all the switching elements operate in the Zero Voltage Switching (ZVS) condition. This helps to achieve high efficiency at high switching frequencies. Another important feature of the proposed DC-DC transformer is the ability to be driven by an arbitrary switching frequency, provided that it is lower than the self oscillating frequency. This permits the synchronization of the converter to a master clock to obtain a stable signal spectrum of a desired base frequency. The analytical expression for the peak voltages and currents, derived in this paper, are applied to develop design guidelines for the proposed DC-DC converter. The proposed topology was tested experimentally on a 100 Watt unit which was run at the 200KHz frequency region. The basic characteristics of the proposed PPRC based DC-DC transformer which include: simplicity, robustness, isolation, ZVS, constant transfer ratio, relatively low current stress and the ability to be synchronized to an external frequency source make it a viable candidate for a master power processor in multiple output configurations.
UR - http://www.scopus.com/inward/record.url?scp=84941485575&partnerID=8YFLogxK
U2 - 10.1109/APEC.1992.228340
DO - 10.1109/APEC.1992.228340
M3 - Conference contribution
AN - SCOPUS:84941485575
T3 - Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC
SP - 731
EP - 737
BT - APEC 1992 - 7th Annual Applied Power Electronics Conference and Exposition, Conference Proceedings
PB - Institute of Electrical and Electronics Engineers
T2 - 7th Annual Applied Power Electronics Conference and Exposition, APEC 1992
Y2 - 22 February 1992 through 27 February 1992
ER -