Electricity: power supply or regulation systems – In shunt with source or load – Using choke and switch across source
Reexamination Certificate
2007-10-09
2007-10-09
Riley, Shawn (Department: 2838)
Electricity: power supply or regulation systems
In shunt with source or load
Using choke and switch across source
C323S283000, C323S288000, C323S285000
Reexamination Certificate
active
10908303
ABSTRACT:
A PFM control circuit generates a pulse control signal for controlling a switching regulator to convert an input voltage into an output voltage. The pulse control signal has a plurality of switch cycles, each of which consists of an ON-time and an OFF-time. The ON-time is applied to turn on a switching circuit of the switching regulator while the OFF-time is applied to turn off the switching circuit. A current detection signal is representative of a current flowing through an inductive device of the switching regulator. The ON-time is prolonged in accordance with an increase of a maximum of the current detection signal. A voltage detection signal is representative of the output voltage. The OFF-time is prolonged in accordance with a reduction of a falling rate of the voltage detection signal.
REFERENCES:
patent: 5481178 (1996-01-01), Wilcox et al.
patent: 5568044 (1996-10-01), Bittner
patent: 5747976 (1998-05-01), Wong et al.
patent: 5801518 (1998-09-01), Ozaki et al.
patent: 5949226 (1999-09-01), Tanaka et al.
patent: 6486645 (2002-11-01), Van Auken
patent: 6545882 (2003-04-01), Yang
patent: 6791368 (2004-09-01), Tzeng et al.
patent: 6801024 (2004-10-01), Bernardon
Chen Yung-Chih
Tain Ya-Der
Tzeng Guang-Nan
Aimtron Technology Corp.
Hsu Winston
Riley Shawn
LandOfFree
PFM control circuit for DC regulator does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with PFM control circuit for DC regulator, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and PFM control circuit for DC regulator will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3878496