SDAA048 July   2025 DRV8376

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
  5. 2Advantages and Challenges of Low-Side Current Sensing with DRV8376
    1. 2.1 Advantages of Low Side Current Sensing
      1. 2.1.1 Low Common Mode Voltage
      2. 2.1.2 Cost Effectiveness
    2. 2.2 Challenges of Low side Current Sensing
      1. 2.2.1 Gain Error
      2. 2.2.2 Temperature Drift
  6. 3DRV8376 Current Sense Amplifier (CSA) Architecture
    1. 3.1 Gain Error vs Temperature
    2. 3.2 Calibration Methods
  7. 4Summary
  8. 5References

Cost Effectiveness

Low-side current sensing is inherently economical, as this eliminates the need for high-voltage, isolated sensing components required in high-side configurations. The integrated sense FET of the DRV8376 further reduces costs by removing the requirement for external shunt resistors, which can range from $0.50 to $2.00 for precision, low temperature options. This integration simplifies the bill of materials (BOM) and reduces PCB space, making the DRV8376 an attractive choice for cost-sensitive applications such as consumer appliances or entry-level automotive systems.