Circuit and method for turn-on of an internal voltage rail

Details Circuit and method for turn-on of an internal voltage rail Circuit and method for turn-on of an internal voltage rail

2006-02-14

2006-02-14

Tra, Quan (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Specific identifiable device, circuit, or system

With specific source of supply or bias voltage

Reexamination Certificate

active

06998904

ABSTRACT:
The circuit and method for turning on an internal voltage rail includes: coupling a first transistor between a power supply node and an internal voltage rail node; mirroring a current from a second transistor to the first transistor during a turn-on time period; and coupling a control node of the first transistor to a bias voltage node after the turn-on time period. This solution permits current controlled turn-on of the first transistor, but a fully switched-on first transistor once turn-on is complete.

REFERENCES:
patent: 6163206 (2000-12-01), Kobayashi
patent: 6249174 (2001-06-01), Tsunezawa
patent: 6388695 (2002-05-01), Nagumo
patent: 2004/0104762 (2004-06-01), Nishi

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