Isolated RS-485 to Wi-Fi Bridge with 24 VAC Power Reference Design
TIDA-00486
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Description

The TIDA-00486 TI Design uses Texas Instruments SimpleLink Wi-Fi CC3200 Internet-on-a-chip Wireless MCU module to create a data bridge between an RS-485 network and a Wi-Fi network. An ISO15 transceiver provides an isolated RS-485 interface with up to 2500 VRMS of isolation. The LM5160 Fly-Buck™ power supply provides both isolated and non-isolated 3.3 V outputs for the two portions of the circuit. The design can be powered with AC or DC power up to 30 VRMS or 48 V peak

A version of this design with a non-isolated RS-485 interface is presented in TIDA-00485.

Features
  • Wide Input Voltage Range of 18 V to 30 V AC,  12 V to 48 V DC
  • Fly-Buck™ Power Supply delivers 3.3 V at 550 mA, Isolated 3.6 V at 50 mA
  • Add Wi-Fi® connectivity to an RS-485 network quickly and simply
  • Galvanically isolated RS-485 interface to improve system safety and reliability
  • CC3200 Application Processor Provides Adaptability to Customer Communication Protocols

See the Important Notice and Disclaimer covering reference designs and other TI resources.


  



Schematic/Block Diagram

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Design Guide

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Design Files

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TI Devices (8)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
CC3100  SimpleLink™ 32-bit Arm Cortex-M3 Wi-Fi® wireless network processor  Wireless connectivity  Sample & Buy View Design Kits & Evaluation Modules
CC3100MOD  SimpleLink™ Wi-Fi CERTIFIED™ network processor module for Internet-of-Things with 2 TLS/SSL  Wireless connectivity  Sample & Buy View Design Kits & Evaluation Modules
CC3200  SimpleLink™ 32-bit Arm Cortex-M4 Wi-Fi® wireless MCU with 2 TLS/SSL and 256kB RAM  Wireless connectivity  Sample & Buy View Design Kits & Evaluation Modules
CC3200MOD  SimpleLink™ 32-bit Arm Cortex-M4 Wi-Fi® and Internet-of-Things wireless module  Wireless connectivity  Sample & Buy View Design Kits & Evaluation Modules
ISO15  1-Mbps, half-duplex, isolated RS-485 & RS-422 transceiver  Isolated interfaces  Sample & Buy View Design Kits & Evaluation Modules
ISO35  1-Mbps, full-duplex, 2.5-kVrms isolated RS-485 & RS-422 transceiver  Isolated interfaces  Sample & Buy View Design Kits & Evaluation Modules
LM5160  LM5160 wide input 65V, 2A synchronous buck/Fly-Buck™ converter  Offline & isolated DC/DC controllers & converters  Sample & Buy View Design Kits & Evaluation Modules
LM5160A  LM5160A Wide Input 65V, 2A Synchronous Buck / Fly-Buck™ Converter  Offline & isolated DC/DC controllers & converters  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
CC3100 Download -
Download
CC3100MOD Download -
CC3200 Download -
CC3200MOD Download -
ISO15 Download Download
ISO35 Download Download
LM5160 Download Download
Download -
LM5160A Download Download

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