High Voltage 12 V – 400 V DC Current Sense Reference Design

(ACTIVE) TIDA-00332

Description & Features

Technical Documents

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Description

This Verified Design shows a circuit to measure currents with a common mode of up to 400V using an INA138. This is achieved by creating a simple floating power supply and biasing the INA138 directly from the high voltage source. The 400V in this design is an example. With different components even higher common mode voltages can be achieved. This circuit is tested and includes gerber files, test results and a detailed description of functionality.

Features
  • Very high common mode voltage range (12V to 400V)
  • 36V CMRR
  • Small solution size (only 4 additional components)

View the Important Notice for TI Designs covering authorized use, intellectual property matters and disclaimers.


  



Schematic/Block Diagram

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Test Data

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Design Files

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TI Devices (1)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
INA138  36V, High-Side, Current Output Current Sense Amplifier  Current sense amplifiers  Sample & Buy Not Available

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
INA138 Download Download

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Technical Documents

View the Important Notice for TI Designs covering authorized use, intellectual property matters and disclaimers.

User guides (1)
Title Abstract Type Size (KB) Date
PDF 284 09 Mar 2015
Design files (3)
Title Abstract Type Size (KB) Date
ZIP 1150 09 Mar 2015
PDF 47 09 Mar 2015
PDF 148 09 Mar 2015

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