Design of silicon-based Transient Voltage Suppressor to meet IEC system-level ESD specification for RS485 transceiver

Jin, Xiangliang; Yuan, Huihui; Jiang, Qi; Wang, Yan

doi:10.1109/icsict.2014.7021505

Cited by 6 publications

(1 citation statement)

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“…A ModBus interface which runs on the RS485 configuration was used to establish the interface with the SCADA system through the MATLAB application [7]. The intelligent meter reading technology becomes more and more popular in meter application, and RS485 network is the key transmission interface of a smart grid [8]. Unfortunately, intelligent electrical meters are often located outdoors, which transmit signals via outdoor cables.…”

Section: Introductionmentioning

confidence: 99%

An on-chip TVS design to meet system level ESD protection for RS485 transceiver

Zhou

Zhang²,

Yuan³

et al. 2021

JER is an international, peer-reviewed journal that publishes f

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RS485 interface is widely used in the area of industrial control and remote meter reading, which are often subjected to serious electrostatic damage. A new On-Chip TVS (OCT) structure without extra process modification and a novel electrostatic discharge method for RS485 transceiver IC have been proposed. It is composed of a serie of Zener diodes and fabricated in 5V/18V/24V 0.5µm CDMOS technology. A 100ns pulse width of the Transmission Line Pulsing (TLP) test is performed for this proposed OCT. The driver circuit itself can work as an ESD device as well. The OCT trigger voltage is compatible with the signal level of RS485 standard. The OCT device protection level of human-body-model (HBM) is up to 16.34kV. RS485 transceiver integrated with OCT has also been tested in order to verify its reliability. The results indicate that it can pass the IEC61000-4-2 contact ±10kV stress and IEC 61000−4−4 Electrical Fast Transient (EFT) ±2.2kV without any hard damages and latch-up issues. The RS485 transceiver integrated with the OCT allows error-free data rate transfer up to 500 kbps. The chip occupies a silicon area of 2.4×1.17mm2.

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Section: Introductionmentioning

confidence: 99%