Method of blocking bidirectional flow of current

Electrical transmission or interconnection systems – Plural supply circuits or sources – Connecting or disconnecting

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Details

257392, 257402, 307 43, 307 64, H01L 2976

Patent

active

057478910

ABSTRACT:
A bidirectional current blocking switch is disclosed. The switch includes a four-terminal MOSFET in which there is no source-body short. The voltages applied to the source and drain terminals are both higher than the voltage applied to the body terminal (for an N-channel) device so that the source-body and drain-body junction of the MOSFET never become forward-biased. The switch of this invention is particularly useful for switching a cascaded set of batteries in a portable computer.

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