SDAA080 September   2025 TPS2HCS08-Q1 , TPS2HCS10-Q1

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
  5. 2High Side Switch Current Sense and Open Load Detection
    1. 2.1 Current Sense in High-side Switches
    2. 2.2 Open-Load Detection in High-side Switches
  6. 3Smart eFuse Current Sense and Open Load Detection
    1. 3.1 Open Load Detection in eFuses
    2. 3.2 Open-Load Current Sense Scaling
    3. 3.3 ADC Input Scaling
    4. 3.4 OL_ON and ADC Input Scaling Programming Procedure
  7. 4Normal vs. Open-Load Scaling Test Results
  8. 5Design Considerations
  9. 6Summary
  10. 7References

3.3 ADC Input Scaling

TI eFuses also offer the option to amplify the current sense voltage as seen by the ADC by 8x, increasing the ADC accuracy by operating at a higher input voltage and resulting in an 8x scaled ISNS value. This can be used in conjunction with OL_ON mode for the highest possible total current sense accuracy.