Output level voltage regulation

Details Output level voltage regulation Output level voltage regulation

2011-03-15

2011-03-15

Donovan, Lincoln (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Specific identifiable device, circuit, or system

With specific source of supply or bias voltage

C327S543000, C327S077000, C323S313000

Reexamination Certificate

active

07907002

ABSTRACT:
A circuit adapting pin output levels to a reference level in which a digital comparator compares an output voltage from an output pin of a device to a reference voltage level. The comparator, relying on the polarity of the comparator output as well as the registered polarity of the comparator output on the previous clock cycle, signals a state machine, which sends a clocked signal to a sense circuit and voltage regulator. The sense circuit may modify a resistance in a switched resistor network, such that the output level is incrementally stepped at clocked intervals towards the reference voltage until the polarity of the error signal reverses. When the output voltage crosses the reference voltage threshold, the comparator flips states and continues to regulate output pin voltage to the reference voltage level.

REFERENCES:
patent: 4638188 (1987-01-01), Cray
patent: 5675231 (1997-10-01), Becerra et al.
patent: 5815355 (1998-09-01), Dawes
patent: 5859757 (1999-01-01), Hanafusa et al.
patent: 5945920 (1999-08-01), Maletsky
patent: 6028755 (2000-02-01), Saeki et al.
patent: 6052770 (2000-04-01), Fant
patent: 6157206 (2000-12-01), Taylor et al.
patent: 6229443 (2001-05-01), Roesner
patent: 6452766 (2002-09-01), Carper
patent: 6512411 (2003-01-01), Meng et al.
patent: 6515919 (2003-02-01), Lee
patent: 6667605 (2003-12-01), Balakrishnan et al.
patent: 6813209 (2004-11-01), Crain et al.
patent: 6815979 (2004-11-01), Ooshita
patent: 6861895 (2005-03-01), Liu et al.
patent: 7023672 (2006-04-01), Goodfellow et al.
patent: WO-06132821 (2006-12-01), None
Document printout: “Single-Ended Open-Loop Level Shifter Circuit”, IP.com database, publ. Nov. 10, 2004, 2 pages.
H. Schutte, “Bi-directional Level Shifter for I2C-bus and other Systems”, Philips Semiconductors, Appln. Note AN97055, Aug. 4, 1997, 16 pages.

Affiliated with

Also associated with

Rating

Output level voltage regulation does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Output level voltage regulation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Output level voltage regulation will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2736209