A 60 V Tolerance Transceiver With ESD Protection for FlexRay-Based Communication Systems

Author

Chua-Chin Wang ; Chih-Lin Chen ; Zong-You Hou ; Yi Hu ; Jam-Wem Lee ; Wan-Yen Lin ; Yi-Feng Chang ; Chia-Wei Hsu ; Ming-Hsiang Song

Author_Institution

Dept. of Electr. Eng., Nat. Sun Yat-Sen Univ., Kaohsiung, Taiwan

Volume

62

Issue

3

fYear

2015

fDate

Mar-15

Firstpage

752

Lastpage

760

Abstract

In this paper, a 60 V tolerance transceiver with ESD (electrostatic discharge) protection is proposed for FlexRay-based communication systems. The FlexRay transceiver comprises three protective devices, including an over-voltage detector, high-voltage ESD devices, and high-voltage diodes. The over-voltage detector is in charge of detecting bus (BP and BM) status to distinguish whether any hazard has happened. If the over-voltage detector is activated, the FlexRay transceiver must be turned off for safety. The high-voltage ESD device uses a base-floating PNP serving as a bi-directional device. Besides, it can protect the FlexRay transceiver whenever it is short-circuited in positive or negative high voltages. Notably, the high-voltage diode will eliminate the negative leakage current when negative high voltage hazards appear in FlexRay channels. An experimental prototype is implemented using a 0.18 μm CMOS mixed-signal based generation II HV BCD process. The measurement results justify the functional correctness and 60 V tolerance of the proposed FlexRay transceiver design.

Keywords

diodes; electrostatic discharge; hazards; protection; transceivers; CMOS mixed-signal based generation II HV BCD process; ESD protection; FlexRay channels; FlexRay transceiver; FlexRay transceiver design; FlexRay-based communication systems; base-floating PNP serving; bi-directional device; electrostatic discharge protection; hazard; high-voltage ESD devices; high-voltage diode; high-voltage diodes; negative high voltage hazards; negative leakage current; over-voltage detector; protective devices; size 0.18 mum; tolerance transceiver; voltage 60 V; CMOS integrated circuits; Detectors; Electrostatic discharges; Hazards; Leakage currents; Temperature measurement; Transceivers; FlexRay transceiver; high-voltage ESD device; high-voltage diode; over-voltage detector;

fLanguage

English

Journal_Title

Circuits and Systems I: Regular Papers, IEEE Transactions on

Publisher

ieee

ISSN

1549-8328

Type

jour

DOI

10.1109/TCSI.2014.2370192

Filename

6979277