Title :
Output characteristics in the discontinuous reactor current mode of the zero-voltage switching DC-DC converter
Author :
Matsuo, Hirofumi ; Hayashi, Hideki ; Kurokawa, Fujio ; Asano, Mutsuyoshi
Author_Institution :
Dept. of Electron., Nagasaki Univ., Japan
Abstract :
It is often observed that the switching frequency in the zero-voltage switching DC-DC converter becomes extremely low when the load current increases and/or when the input voltage decreases. This lowering deteriorates the advantage of the high frequency in designing the energy-storage elements of the DC-DC converter. The output characteristics of the zero-voltage switching DC-DC converter operating in the discontinuous reactor current mode are analyzed. It is shown that there exists a useful discontinuous mode in which the variation of the switching frequency can be restricted within ±5% when the output voltage can be regulated for the load change from no load to full load or for ±15% change of the input voltage. The voltage stress of the switch can be sufficiently suppressed compared with that in the continuous reactor current mode
Keywords :
power convertors; reactors (electric); DC-DC converter; discontinuous reactor current mode; energy-storage elements; input voltage; load current; voltage stress; zero-voltage switching; DC-DC power converters; Frequency conversion; Inductance; Inductors; RLC circuits; Resonance; Switches; Switching converters; Switching frequency; Zero voltage switching;
Conference_Titel :
Telecommunications Energy Conference, 1992. INTELEC '92., 14th International
Conference_Location :
Washington, DC
Print_ISBN :
0-7803-0779-8
DOI :
10.1109/INTLEC.1992.268422
