TIDA-00486

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

TIDA-00486

Design files

Overview

TIDA-00486 uses our 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. The 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 avaialble in TIDA-00485.

Features
  • Wide-input voltage range of 18-V to 30-V AC and 12-V to 48-V DC
  • Fly-Buck power supply delivers 3.3 V at 550 mA and 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

Design files & products

Design files

Download ready-to-use system files to speed your design process.

TIDUA49C.PDF (5458 K)

Reference design overview and verified performance test data

TIDRFG4.PDF (594 K)

Detailed schematic diagram for design layout and components

TIDRFG5.PDF (222 K)

Complete listing of design components, reference designators, and manufacturers/part numbers

TIDRFG6.PDF (389 K)

Detailed overview of design layout for component placement

TIDRFG7.PDF (444 K)

Detailed overview of design layout for component placement

TIDRFG9.ZIP (1067 K)

Files used for 3D models or 2D drawings of IC components

TIDCAI4.ZIP (1389 K)

Design file that contains information on physical board layer of design PCB

TIDRFG8.PDF (2185 K)

PCB layer plot file used for generating PCB design layout

Products

Includes TI products in the design and potential alternatives.

Isolated DC/DC converters & modules

LM5160LM5160 wide input 65V, 2A synchronous buck/Fly-Buck™ converter

Data sheet document-pdfAcrobat PDF open-in-new HTML
Isolated DC/DC converters & modules

LM5160ALM5160A Wide Input 65V, 2A Synchronous Buck / Fly-Buck™ Converter

Data sheet document-pdfAcrobat PDF open-in-new HTML
Isolated RS-485 transceivers

ISO151-Mbps, half-duplex, isolated RS-485 & RS-422 transceiver

Data sheet document-pdfAcrobat PDF open-in-new HTML
Isolated RS-485 transceivers

ISO351-Mbps, full-duplex, 2.5-kVrms isolated RS-485 & RS-422 transceiver

Data sheet document-pdfAcrobat PDF open-in-new HTML
Wi-Fi products

CC3100SimpleLink™ 32-bit Arm Cortex-M3 Wi-Fi® wireless network processor

Data sheet document-pdfAcrobat PDF open-in-new HTML
Wi-Fi products

CC3100MODSimpleLink™ Wi-Fi CERTIFIED™ network processor module for Internet-of-Things with 2 TLS/SSL

Data sheet document-pdfAcrobat PDF
Wi-Fi products

CC3200SimpleLink™ 32-bit Arm Cortex-M4 Wi-Fi® wireless MCU with 2 TLS/SSL and 256kB RAM

Data sheet document-pdfAcrobat PDF open-in-new HTML
Wi-Fi products

CC3200MODSimpleLink™ 32-bit Arm Cortex-M4 Wi-Fi® and Internet-of-Things wireless module

Data sheet document-pdfAcrobat PDF

Start development

Software

Firmware

TIDA-00485 and TIDA-00486 Firmware – TIDCAO8.ZIP (3940 K)

Technical documentation

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Type Title Date
* Design guide Isolated RS-485 to Wi-Fi Bridge With 24-V AC Power Design Guide (Rev. C) Feb. 10, 2016
Technical article Add connectivity to existing hardware with our UART to Wi-Fi bridge Sep. 08, 2015
More literature TIDA-00485 and TIDA-00486 Firmware Jul. 27, 2015

Related design resources

Reference designs

REFERENCE DESIGN
TIDA-00375 UART to Wi-Fi Bridge with 24 VAC Power Reference Design TIDA-00380 CAN to Wi-Fi Gateway Reference Design TIDA-00485 Non-Isolated RS-485 to Wi-Fi Bridge with 24 VAC Power Reference Design

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