无极性RS485芯片驱动器的设计  

Design of Non-polar RS485 Chip Driver

作　　者：王世银 罗小巧[1] WANG Shiyin;LUO Xiaoqiao(Central China Normal University,Hubei 430079,China.)

机构地区：[1]华中师范大学

出　　处：《集成电路应用》2019年第11期16-18,共3页Application of IC

基　　金：湖北省教育系统科技创新课题项目

摘　　要：这是一种无极性RS485芯片的应用及驱动器的整体模块。提出无极性RS485芯片驱动器整体设计的方法,及无极性RS485芯片A、B端口的保护措施。解决了无极性RS485芯片在应用时,A、B端口的共模电压及过大的短路电流引起的漏电,损坏MOS管等问题。This paper introduces the application of Non-polar RS485 chip and the whole module of the driver. It puts forward the overall design method of Non-polar RS485 chip driver and the protection measures of Non-polar RS485 chip A and B port. The problems of leakage and damage of MOS tube caused by common mode voltage of A and B ports and excessive short circuit current are solved ,when Non-polar RS485 chip is applied.

关 键 词：集成电路设计 RS485 驱动器 共模电压 短路电流 

分 类 号：TN402[电子电信—微电子学与固体电子学] TN919.7