TIDA-01630
适用于 Tamagawa 编码器的高 EMC 抗扰度 RS485 接口参考设计
TIDA-01630
概述
EMC immunity, especially immunity against inverter switching noise, is important for positioning encoder feedback systems of industrial drives. This design demonstrates a high EMC immunity RS485 transceiver solution which can be used on both the drive and encoder, such as Tamagawa™, EnDat 2.2, BiSS®, and so forth. The design supports a wide input voltage of 5 V. A connector with 3.3-V logic I/O signals and a 3.3-V power supply allows direct interface with the host processor to run the master protocol and power the processor. To meet the supply range of the selected encoder, the design offers an output voltage to the encoder equal to the Vin. This design’s power supply offers protection against overvoltage and short circuit, according to the selected encoder’s voltage range, to prevent damage during a cable short. The design has been tested for up to a 50-m cable length with the Tamagawa encoder.
特性
- 5-V half-duplex RS485 transceiver with up to 50-Mbps baud rate and improved EMC immunity against IEC61000-4-4
- Hardware supports 2-wire interfaces standards such as Tamagawa or 4-wire RS485 interface standards like EnDat2.2 and BiSS
- 5-V supply half-duplex RS485 transceiver THVD1550 with 16kV IEC-ESD and 4kV EFT eliminates cost for external ESD components
- Highest immunity against IEC61000-4-4 Fast Electrical Transients versus other industry standard RS485 transceivers validated in system tests
- Designed to meet IEC61800-3 EMC immunity for variable speed drives without the need for additional protection devices such as TVS diodes when used in applications with Encoders using shielded cables
- The design is in BoosterPack™ Plug-in Module form factor with a connector compatible to the TI LaunchPad™ Development Kit for easy evaluation of Tamagawa with a C2000™ MCU
我们开发的全面组装电路板仅用于测试和性能验证，不可用于销售。
设计文件和产品
设计文件
下载现成的系统文件，加快您的设计过程。
产品
在设计中包括 TI 产品和可能的替代产品。
技术文档
| 类型 | 标题 | 下载最新的英文版本 | 日期 | |||
|---|---|---|---|---|---|---|
| 设计指南 | 适用于Tamagawa 编码器的高EMC 抗扰度RS485 接口参考 设计 | 英语版 | 2018年 3月 27日 |