实现从 3.3 V 电源 ISO 11898 2 兼容 5V HS CAN 通信

摘要： 本应用指南中解决了一个很常见的问题，为汽车的电子控制单元 (ECU) 的只有 3.3 V 电源供电。ISO 11898 2 标准规定只有 5V 电源供应权力铁路可以收发器。本文说明如何可以提供汽车可以收发器与 3.3 V 电荷泵提供低功耗、 低--以和容易解决此问题。通过消除在 5V 电源线，许多汽车 Oem 将节省重量和成本，同时提高里程性能。文章还讨论了对电磁辐射 （电磁辐射） 和免疫 (EMI) 和电磁兼容 (EMC) 的电路的影响。MAX13041 可以收发器每次应用程序中的 MAX1759 充电泵。
Maxim > App Notes > Automotive Interface Circuits
Keywords: 3V CAN, CAN, CAN Transceivers, TJA1041, TJA1040, TJA1050, PCA82C250, TLE625, CAN BUS, Automotive networks, Dec 06, 2010
Automotive CAN, High ESD, low power CAN

APPLICATION NOTE 4643
Achieve ISO 11898-2-Compliant 5V HS-CAN Communication from a
3.3V Supply


Abstract:This application note solves a very common problem of powering an automotive electronic control unit (ECU) with only a
3.3V supply. The ISO 11898-2 standard stipulates that only a 5V power supply rail powers the CAN transceiver. This article
shows how an automotive CAN transceiver can be supplied with a 3.3V charge pump to provide a low power, low-voltage, and
easy solution to this problem. By eliminating the 5V power rail, many automotive OEMs will save weight a