Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Current driver
Reexamination Certificate
2009-04-24
2010-10-05
Lam, Tuan (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Signal converting, shaping, or generating
Current driver
C327S108000
Reexamination Certificate
active
07808286
ABSTRACT:
A driver circuit includes a first and a second voltage rail, a first pre-driver circuit, a power transistor, comparison circuitry which indicates when a voltage level of the first voltage rails is above or below a reference voltage level, a level shift circuit coupled between the first voltage rail and the second voltage rail which provides a level shifted output, a tapered buffer circuit coupled to the first voltage rail and to a first circuit node, wherein the tapered buffer circuit receives the level shifted output and provides a buffered output to a control electrode of the first pre-driver transistor, and a rail voltage adjusting circuit coupled between the first circuit node and the second voltage rail, which, in response to the comparison circuitry indicating that the voltage level of the first voltage rail is above the reference voltage level, adjusts a voltage level of the second voltage rail.
REFERENCES:
patent: 5214322 (1993-05-01), Neidorff et al.
patent: 6429700 (2002-08-01), Yang
patent: 7301376 (2007-11-01), Capodivacca et al.
patent: 7408388 (2008-08-01), Nagasawa et al.
patent: 2007/0262797 (2007-11-01), Okamoto et al.
http://media.freescale.com/phoenix.zhtml?c=196520&p=irol-newsArticle&ID=1256442&highlight=solar “Freescale demonstrates breakthrough in power conversion technology for single-cell solar chargers”; Freescale News Release; 2 pp; Feb. 16, 2009, Freescale Semiconductor, Inc., Washington, DC. Printed copy being submitted.
http://www.freescale.com/webapp/sps/site/overview.jsp?code=PVENERGYHOME&fsrch=1 Photovoltaic Energy; 2pp; downloaded Apr. 2, 1999, Freescale Semiconductor, Inc. Printed copy being submitted.
Miller Ira G.
Pigott John M.
Chiu Joanna G.
Freescale Semiconductor Inc.
King Robert L.
Lam Tuan
Nguyen Hiep
LandOfFree
Circuitry in a driver circuit does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Circuitry in a driver circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Circuitry in a driver circuit will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4225871