Drive method for switching power converter and apparatus using t

Details Drive method for switching power converter and apparatus using t Drive method for switching power converter and apparatus using t

1986-03-24

1987-07-14

Wong, Peter S.

Electricity: power supply or regulation systems

Output level responsive

Using a three or more terminal semiconductive device as the...

323272, G05F 156

Patent

active

046805346

ABSTRACT:
A main switch consisting of a switching transistor and a current transformer is triggered at the leading edge of a main switch drive pulse. The switching transistor then starts a positive feedback operation through the current transformer and is turned on at high speed. Upon activation of the switching transistor, the magnetic core of the current transformer is saturated by the switching transistor emitter current flowing in the current transformer. Magnetic saturation of the core turns off the switching transistor with the magnetic energy stored in the current transformer. The main switch drive pulse falls after the switching transistor is turned off.

REFERENCES:
patent: 4187458 (1980-02-01), Milberger et al.
patent: 4348598 (1982-09-01), Smith
"A New Improved and Simplified Proportional Base Drive Circuit", Rudy Severns, Intersil, Inc. Proceeding of Powercon 6, May 1979, pp. B2-1 to B2-12.
"Pulse Synchronizing DC-to-DC Converter", Koosuke Harada, et al., IEEE Transaction on Aerospace and Electronic Systems vol. AES-17 No. 3, Mar. 1981, pp. 322-328.
"Inverter for Use with Very Low Input Voltage", T. G. Wilson, E. T. Moore, IEEE Trans(Communication and Electronics), vol. 83, pp. 424-428, Jul. 1964.

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