Pulse width modulator circuit for switching regulators

Details Pulse width modulator circuit for switching regulators Pulse width modulator circuit for switching regulators

1986-08-25

1988-05-10

Miller, Stanley D.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307529, 307494, 307357, 330260, H03K 522, H03B 1900, H03F 345

Patent

active

047437839

ABSTRACT:
A circuit for pulse width modulating the output of a voltage controlled oscillator without introducing any ocillator frequency or amplitude (slope) modulation. A summing circuit is combined with a comparator and provided with inputs that accommodate differential sum/difference inputs, an error input and a ramp input from the oscillator or other source. The ramp and error signals are combined differentially to pulse width modulate the comparator output and pulse width modulation can also be achieved by via the sum/difference inputs a differential relationship.

REFERENCES:
patent: 3259758 (1966-07-01), Hobrough
patent: 3764826 (1973-10-01), Okada
patent: 3935507 (1976-01-01), Wolber
patent: 4057796 (1977-11-01), Hoogendoorn et al.
patent: 4599572 (1986-07-01), Nakayama

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