Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Particular stable state circuit
Reexamination Certificate
2006-05-02
2006-05-02
Wells, Kenneth B. (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Signal converting, shaping, or generating
Particular stable state circuit
C327S540000, C323S901000
Reexamination Certificate
active
07038514
ABSTRACT:
A startup circuit for a power converter including an amplifier circuit, a comparator, and startup logic. The power converter includes an error amplifier that compares an output sense signal with a startup reference signal and that provides a compensation signal. The amplifier circuit charges the startup reference signal to a predetermined reference level based on a second reference signal in response to a start signal. The comparator determines when the compensation signal reaches a predetermined ramp level and asserts a startup complete signal indicative thereof. The startup logic provides the start signal and provides an output enable signal in response to the startup complete signal. The output enable signal enables output switching to initiate normal regulation operation of the output voltage. In one embodiment, the predetermined ramp level is approximately the center voltage of a sawtooth regulation waveform used for PWM modulation.
REFERENCES:
patent: 5502410 (1996-03-01), Dunn et al.
patent: 6316926 (2001-11-01), Savo et al.
patent: 6448752 (2002-09-01), Umemoto
patent: 6552517 (2003-04-01), Ribellino et al.
patent: 6661216 (2003-12-01), Grant et al.
patent: 2005/0194951 (2005-09-01), Mehas et al.
patent: 0 532 263 (1993-03-01), None
PCT Notification of Transmittal of the International Search Report or the Declaration, dated Apr. 12, 2005, 3 pages.
Leith James W.
Mehas Gustavo J.
Englund Terry L.
Intersil America's Inc.
Stanford Gary R.
Wells Kenneth B.
LandOfFree
Startup circuit for a DC-DC converter does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Startup circuit for a DC-DC converter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Startup circuit for a DC-DC converter will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3587238