Integrated tracking voltage regulation and control for PMUIC...

Details Integrated tracking voltage regulation and control for PMUIC... Integrated tracking voltage regulation and control for PMUIC...

2007-09-25

2007-09-25

Sherry, Michael (Department: 2836)

Electrical transmission or interconnection systems

Plural supply circuits or sources

Diverse or unlike electrical characteristics

Reexamination Certificate

active

10989131

ABSTRACT:
A tracking and control method and circuit for use in a power management unit integrated circuit (PMUIC) that enables multiple voltage regulator outputs to maintain a same voltage or a ratiometric relation to a reference voltage source. When the reference voltage source is powered down or falls below a prescribed level, the tracking power supplies are automatically switched to their internal bandgap reference voltage. Accordingly, outputs of the tracking power supplies are prevented from introducing large transient excursions that might result in malfunctions in the circuitry of the load such as latch-ups. Ratiometric tracking further provides coordinated preservation of logic interface levels, and reduces leakage current.

REFERENCES:
patent: 4644251 (1987-02-01), Rathke
patent: 4675770 (1987-06-01), Johansson
patent: 6031362 (2000-02-01), Bradley
Singel Resistor Adjustment for Setting DC Output Voltage of Multiple Series Regulators, Aug. 1, 1987, IBM Technical Disclosure Bulletin, 30, 1325.

Affiliated with

Also associated with

Rating

Integrated tracking voltage regulation and control for PMUIC... does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3788237