Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Current driver
Reexamination Certificate
2007-11-13
2010-02-09
Donovan, Lincoln (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Signal converting, shaping, or generating
Current driver
C327S112000, C327S376000, C327S377000, C327S387000, C327S389000, C327S391000, C327S434000, C327S435000, C327S436000, C327S437000, C326S085000, C326S086000, C326S087000, C326S090000, C326S091000, C323S284000
Reexamination Certificate
active
07659754
ABSTRACT:
A power switching circuit in CMOS technology has a power MOS transistor and a driver stage. The power MOS transistor is operated at a higher supply voltage in excess of its maximum allowable gate-source voltage; and the driver stage of the level shifter is operated at a lower supply voltage substantially lower than the supply voltage for the power MOS transistor. The driver stage includes a pair of driver MOS transistors coupled in series between a higher supply voltage rail and a reference potential rail, and at an interconnection node coupled to the gate of the power MOS transistor. The gates of the driver MOS transistors are AC-coupled to drive signals of mutually opposite phase; and the gates of the driver MOS transistors are each connected to the higher voltage supply rail through a respective parallel connection of a first resistor and a second resistor connected in series with a non-linear component. The resistance value of the second resistor is substantially smaller than the resistance value of the first resistor.
REFERENCES:
patent: 6538479 (2003-03-01), Bellomo et al.
patent: 6836173 (2004-12-01), Yang
patent: 6975146 (2005-12-01), Schottler
patent: 7135894 (2006-11-01), Stegers et al.
patent: 2003/0107425 (2003-06-01), Yushan
patent: 102 46 083 (2004-03-01), None
patent: WO 2004/032323 (2004-04-01), None
Bayer Erich
Thiele Gerhard
Brady III Wade J.
Donovan Lincoln
Patti John J.
Poos John W
Telecky , Jr. Frederick J.
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