PWM circuit and PWM integrated circuit for use in PWM circuit

Details PWM circuit and PWM integrated circuit for use in PWM circuit PWM circuit and PWM integrated circuit for use in PWM circuit

2008-01-01

2008-01-01

Cox, Cassandra (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Rectangular or pulse waveform width control

C327S175000

Reexamination Certificate

active

07315190

ABSTRACT:
The present invention discloses a PWM integrated circuit which may receive a programming signal without any extra pin. The PWM integrated circuit comprises: a comparator having two outputs; two pins respectively electrically connected with the two outputs; and a programming unit electrically connected with at least one of the two pins for setting a parameter inside the PWM integrated circuit. The two pins of the PWM integrated circuit may be used to respectively control a control switch and a synchronous switch, constituting a PWM circuit for generating PWM signals.

REFERENCES:
patent: 5075634 (1991-12-01), French
patent: 6147526 (2000-11-01), Skelton et al.
patent: 7026851 (2006-04-01), Yang et al.
patent: 7199643 (2007-04-01), Nalbant
patent: 2003/0174005 (2003-09-01), Latham et al.
patent: 2006/0022732 (2006-02-01), Leung et al.
patent: 2006/0028257 (2006-02-01), Huang et al.
patent: 2006/0097765 (2006-05-01), Asada

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