TIDA-03050 Reference Design

Texas Instruments

Automotive, mA-to-kA Range, Current Shunt Sensor Reference Design


This reference design shows how to detect current from the mA-to-KA range using a busbar-type shunt resistor. The increasing demand of high-capacity batteries in electric vehicles (EVs) and hybrid electric vehicles (HEVs) drives the requirement for larger current spans and highly-accurate current sensors. Obtaining a good accuracy over three decades (mA to A, 1 A to 100 A, and 100 A to 1000 A) is quite challenging due to large amounts of noise in the system. This design solves this problem by using a high-resolution analog-to-digital converter (ADC) and high-accuracy current shunt monitors from TI.

  • Full-scale accuracy of: 0.02% full-scale range (FSR) for < 20A and < 0.05% FSR for 20A to 1500A at 25°C; 0.1% FSR for < 20A and 0.25% FSR for 20A to 1500A at 50°C
  • Suitable for 50mA to 1500A range current measurement; configurable to varied current spans
  • High-side sensing and low-side sensing
  • Supports bi-directional current
  • Bi-directional current measurement: -1500A to +1500A
  • Battery Management System (BMS)
  • DC/DC Converter
  • Inverter & Motor Control
  • On-Board (OBC) & Wireless Charger
  • Powertrain Current Sensors
Product Categories
  • Amplifiers

Bill Of Materials

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Test Data

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Other Documents

Title Updated Type Size (KB)
TIDA-03050 Gerber 26 Sep 2017 ZIP 419
TIDA-03050 PCB 26 Sep 2017 PDF 511
TIDA-03050 Assembly Drawing 26 Sep 2017 PDF 103
TIDA-03050 BOM 26 Sep 2017 PDF 53
TIDA-03050 Schematic and Block Diagram 26 Sep 2017 PDF 302