Edward James Miller
Engineers at Longview St, Littleton, CO
License number
Colorado 8645
Issued Date
Mar 16, 1968
Renew Date
Jan 20, 1989
Expiration Date
Jan 20, 1989
Type
Professional Engineer
Address
Address
6166 S Longview St, Littleton, CO 80120
Professional information
Resonant Switching Converter
US Patent:
4138715, Feb 6, 1979
Filed:
Oct 11, 1977
Appl. No.:
5/841090
Inventors:
Edward J. Miller - Littleton CO
Assignee:
Martin Marietta Corporation - Bethesda MD
International Classification:
H02M 3135
US Classification:
363 28
Abstract:
A DC to DC converter employs resonant switching to turn switching power devices on and off at zero current. Two series resonant circuits are formed by two inductors connected in series between a voltage source and a power switch and a capacitor connected between the junction of the two inductors and a source of reference potential. The values of the two inductors are chosen so that the natural resonant frequency of the second inductor and the capacitor is high compared to the natural resonant frequency of the first inductor and the capacitor. The power switch may be a semiconductor switch, such as a silicon controlled rectifier or a junction transistor. Both non-isolated and isolated outputs may be provided in buck or boost conversion. The converter can be used as a voltage regulator by the addition of output sensing, comparison with a reference voltage, and suitable on-off control.