Pulse width modulation control circuit

Details Pulse width modulation control circuit Pulse width modulation control circuit

1987-09-03

1989-04-25

Wong, Peter S.

Electric power conversion systems

Current conversion

With means to introduce or eliminate frequency components

363 21, 363 26, H02M 114

Patent

active

048253472

ABSTRACT:
A pulse width modulation control circuit utilizes a retriggerable monostable multivibrator as a high speed comparator which compares a reference waveform with a control signal level to effect variable termination of modulated output pulses. The control circuit finds particular applicability to pulse width modulated switched mode power supplies.

REFERENCES:
patent: 3959711 (1976-05-01), Greenhalgh
patent: 4013939 (1977-03-01), Biess et al.
patent: 4334186 (1982-06-01), Sasayama et al.
patent: 4351020 (1982-09-01), Leti et al.
patent: 4477867 (1984-10-01), Pellegrino
patent: 4622627 (1986-11-01), Rodriguez et al.
patent: 4628429 (1986-12-01), Walker
patent: 4672518 (1987-06-01), Murdock
patent: 4680688 (1987-07-01), Inou et al.
patent: 4700285 (1987-10-01), Szepesi

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