This high EMC immunity reference design demonstrates a RS-485 transceiver to use on both the drive and within encoders such as: EnDat 2.2, BiSS®, Tamagawa™, etc. EMC immunity, particularly immunity against inverter switching noise, is important for position encoder feedback systems within industrial drives. This design supports a wide input voltage range (used as output voltage to the encoder) from 5 to 15 V (12 V nom) in order to meet the wide supply range of encoders. The power supply of this design includes protection against overvoltage and short circuit according to the selected encoder’s voltage range to prevent damage during a cable short. The BoosterPack™ plug-in module form factor with connector compatible to TI LaunchPad™ development kit is included for easy evaluation of EnDat, BiSS, and other systems with the C2000™ MCU. This reference design has been tested up to 100-m cable length with EnDat 2.2 encoders.
A fully assembled board has been developed for testing and performance validation only, and is not available for sale.
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Reference design overview and verified performance test data
Detailed schematic diagram for design layout and components
Complete listing of design components, reference designators, and manufacturers/part numbers
Detailed overview of design layout for component placement
Files used for 3D models or 2D drawings of IC components
Design file that contains information on physical board layer of design PCB
PCB layer plot file used for generating PCB design layout
Includes TI products in the design and potential alternatives.
| Type | Title | Date | ||
|---|---|---|---|---|
| * | Design guide | High EMC Immunity, RS-485 Interface Reference Design to Absolute Encoders | Sep. 27, 2017 |
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