Electricity: power supply or regulation systems – In shunt with source or load – Using a three or more terminal semiconductive device
Reexamination Certificate
2007-08-14
2007-08-14
Riley, Shawn (Department: 2838)
Electricity: power supply or regulation systems
In shunt with source or load
Using a three or more terminal semiconductive device
Reexamination Certificate
active
11052473
ABSTRACT:
A switched regulator circuit provides step-up and step-down operation at high efficiency during light load conditions. Switching loss is reduced in a four switch arrangement by limiting bottom MOSFET switching frequency. The possibility of overcharge in boost mode operation has been avoided by automatically changing to a buck mode operation in response to sensed parameters.
REFERENCES:
patent: 4618812 (1986-10-01), Kawakami
patent: 5001621 (1991-03-01), Egawa
patent: 5134355 (1992-07-01), Hastings
patent: 5481178 (1996-01-01), Wilcox et al.
patent: 5552694 (1996-09-01), Appeltans
patent: 5602463 (1997-02-01), Bendall et al.
patent: 5734258 (1998-03-01), Esser
patent: 5808453 (1998-09-01), Lee et al.
patent: 5889392 (1999-03-01), Moore et al.
patent: 6087816 (2000-07-01), Volk
patent: 6166527 (2000-12-01), Dwelley et al.
patent: 6191567 (2001-02-01), Sluijs
patent: 6215286 (2001-04-01), Scoones et al.
patent: 6275016 (2001-08-01), Ivanov
patent: 6348779 (2002-02-01), Sluijs
patent: 6411531 (2002-06-01), Nork et al.
patent: 6580258 (2003-06-01), Wilcox et al.
patent: 6636431 (2003-10-01), Seki et al.
patent: 6737838 (2004-05-01), Sluijs et al.
patent: 6765371 (2004-07-01), Kataoka
patent: 6781352 (2004-08-01), Athari et al.
patent: 6859020 (2005-02-01), Baldwin et al.
patent: 6977488 (2005-12-01), Nogawa et al.
patent: 6984967 (2006-01-01), Notman
patent: 2002/0145409 (2002-10-01), Umminger et al.
patent: 2004/0085048 (2004-05-01), Tateishi
patent: 2004/0239299 (2004-12-01), Vinciarelli
patent: 2005/0195622 (2005-09-01), Lehman et al.
patent: 2006/0055384 (2006-03-01), Jordan et al.
MAXIM Step-Up/Step-Down Li+ Battery Charger, Maxim Integrated Products, MAX1870 A, pp. 1-32.
Redl, Richard., et al. “What a Design Engineer Should Know About Current-Mode Control.” Design Automation Inc. pp. 18-33.
“Modeling, Analysis and Compensation of the Current-Mode Converter,” Unitrode Application Note, U-97, Applications Handbook 1997 Edition, pp. 3-43-3-48.
“Micropower Synchronous Buck-Boost DC/DC Converter.” Linear Technology, LTC3440, pp. 1-16.
“No RSENSESynchronous Step-Up DC/DC Controller.” Linear Technology, LTC1700, pp. 1-16.
“High Efficiency Synchronous Step-Down Switching Regulator.” Linear Technology, LTC1735, pp. 1-32.
“Wide Operating Range No RSENSE™ Step-Down Controller.” Linear Technology, LTC1778/LTC1778-1, pp. 1-24.
Flatness Randy G.
Zhou Xunwei
Linear Technology Corporation
McDermott Will & Emery LLP
Riley Shawn
LandOfFree
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