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24 VAC Powered Non-Isolated RS-485 to Wi-Fi Bridge Reference Design

TIDA-00486

Overview

The TIDA-00486 TI design uses Texas Instruments' SimpleLink Wi-Fi CC3200 on-chip Internet 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 electrical isolation up to 2500 VRMS. The LM5160 Fly-Buck™ power supply provides both isolated and non-isolated 3.3V outputs for both parts of the circuit. The design can be powered by AC or DC supplies up to 30VRMS or 48V peak

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

characteristic

● Wide input voltage range of 18V to 30V (AC) and 12V to 48V (DC)
● Fly-Buck™ power supply provides 3.3V voltage (550mA) and isolated 3.6V voltage (50mA)
● Quickly add Wi-Fi® connections to RS-485 networks
● Potentially isolated RS-485 interface improves system safety and reliability
● CC3200 application processor is suitable for a variety of customer communication protocols

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Blockdiagram

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Update:2025-06-26 16:21:23

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