Distributed power regulation in a portable computer to optimize

Details Distributed power regulation in a portable computer to optimize Distributed power regulation in a portable computer to optimize

1994-05-11

1996-07-02

Shoop, Jr., Willaim M.

Electrical transmission or interconnection systems

Plural supply circuits or sources

Substitute or emergency source

307 66, 364492, 364707, 320 2, 320 14, H02J 314

Patent

active

055325246

ABSTRACT:
A system for distributing power throughout a computer system, preferably a portable computer, while still maintaining a desired power mode hierarchy so that the most critical components or circuits-within the computer system receive power before non-critical components. The system includes a micro-controller unit for controlling power allocations throughout the system. The system further includes a power connector for interfacing with a dual-line AC-to-DC adapter, a switching regulator for providing regulated DC power outputs to a central processing unit, memory unit and the like, a battery switching circuit having two battery packs to support simultaneous charging and sequential discharging of the battery packs in the event that the AC-to-DC adapter is decoupled from the computer system and an auxiliary battery source for supplying power to critical components in the computer system as a last resort.

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patent: 5200685 (1993-04-01), Sakamoto
patent: 5237258 (1993-08-01), Crampton
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patent: 5287053 (1994-02-01), Hutchinson
patent: 5300874 (1994-04-01), Shimamoto et al.
patent: 5423045 (1995-06-01), Kannan et al.
patent: 5430881 (1995-07-01), Ikeda

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