High efficiency pulse width modulator

Details High efficiency pulse width modulator High efficiency pulse width modulator

1997-07-03

1999-06-08

Wells, Kenneth B.

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Rectangular or pulse waveform width control

327175, 327363, H03K 3017

Patent

active

059107430

ABSTRACT:
The apparatus and the method representing an improved power management system are disclosed. The apparatus incudes a feedback control system with a delay element. The delay element introduces the oscillation frequency outside the input frequency band into the feedback control system. Therefore, the apparatus emulates a very efficient pulse width modulator (PWM) with a feedback. The apparatus additionally includes a pulse shaper amplifier that squares the pulse of the output signal.

REFERENCES:
patent: 5170636 (1992-12-01), Hitosugi
patent: 5515258 (1996-05-01), Viertler
patent: 5517523 (1996-05-01), Nabors et al.
patent: 5539354 (1996-07-01), Carsten
patent: 5548570 (1996-08-01), Hirajima et al.
patent: 5563776 (1996-10-01), Eck
patent: 5594324 (1997-01-01), Canter et al.
patent: 5613233 (1997-03-01), Vagher

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