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EMC Compliant High-Side Current Sensing with Overvoltage Protection

TIDA-00126

 
Overview

This reference design focuses on high-side current measurements using TI's range of voltage output current shunt monitors. This design can be used to measure high-side current in industrial applications where common-mode dynamics can drop below ground. Overall, this design helps designers build electromagnetic compatibility (EMC) compliant circuits based on current shunt monitor devices while achieving a highly accurate current monitoring solution in the presence of a wide range of common-mode voltages from -14V to +80V.

characteristic
  • ●Wide common mode input range: -14V to 80V
  • ● Overvoltage protection: 45V
  • ● Provide EFT protection up to 1KV according to IEC61000-4-4
  • ● >130dB CMRR (for DC 10Hz)
  • ● Overall accuracy is greater than 2%
  • ● 70 µV offset and 1.4% gain error

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