A 0.8 /spl mu/m-standard CMOS merges one-wire protocol interpreter and 2.5 A-18 V power switch to accomplish low-cost automotive network

Abstract

The paper describes an integrated microsystem, which makes up the node of a one-wire ring-topology network. The developed IC was fabricated in 0.8 /spl mu/m-standard CMOS technology, occupying an area of 12.7 mm/sup 2/. It consists of two sections: A digital section that implements a state machine, which interprets a proprietary data communication protocol and a power section capable of driving loads up to 2.5 A at 18 V.