Fully integrated CMOS overvoltage protection circuit for automotive applications. Issue 17 (1st August 2015)

• Record Type: Journal Article
• Authors: Boni, A.; Tonelli, M.; Magnanini, A.; Caselli, M.
• Is Part Of: Electronics letters. Volume 51:Issue 17(2015)
• Page Start: 1316
• Page End: 1318
• Publication Date: 2015-08-01
• Subjects: CMOS integrated circuits -- overvoltage protection -- integrated circuit design -- integrated circuit reliability -- automotive electronics; voltage signal -- power device output -- ignition coil -- fuel injector -- car engine -- integrated circuit -- voltage peaks -- integrated detection -- overvoltage protection circuit -- prototype chip -- CMOS technology -- automotive applications -- size 350 nm; Electronics -- Periodicals; 621.381
• DOI: 10.1049/el.2015.1813
• Languages: English
• ISSNs: 0013-5194

Abstract

Abstract : The voltage signal at the output of the power device driving the ignition coil or the fuel injector of a car engine is often required to be detected and processed for control and diagnostic purposes. Providing this kind of signals to an integrated circuit raises several design and reliability issues due to the presence of voltage peaks of several hundred volts. The design and implementation of an integrated detection and overvoltage protection circuit is presented. A prototype chip was implemented in a 350 nm CMOS technology without a thick‐oxide option. The measured performance over the −40 to +125°C temperature range is in good agreement with the simulation results.