SLVUDV6A August   2026  – September 2026

 

  1.   1
  2.   Description
  3.   Get Started
  4.   Features
  5.   Applications
  6.   6
  7. 1Evaluation Module Overview
    1.     8
    2. 1.1 Introduction
    3. 1.2 Kit Contents
    4. 1.3 Specification
    5. 1.4 Device Information
  8. 2Hardware
    1. 2.1 Assembly Instructions
    2. 2.2 Jumper Information
    3. 2.3 Interfaces
    4. 2.4 Test Points
  9. 3Test Setup and Procedures
    1. 3.1 ISNS Accuracy
  10. 4Software
    1. 4.1 Software Usage
      1. 4.1.1 Command Center View
      2. 4.1.2 I2T Tuner
      3. 4.1.3 Device Settings
      4. 4.1.4 Channel Settings
      5. 4.1.5 Faults
      6. 4.1.6 Console View
      7. 4.1.7 Importing/Exporting
      8. 4.1.8 Firmware Updates
      9. 4.1.9 Persist Settings
  11. 5Hardware Design Files
    1. 5.1 Schematics
    2. 5.2 PCB Layouts
    3. 5.3 Bill of Materials (BOM)
  12. 6Additional Information
    1. 6.1 Trademarks
  13. 7Revision History

3.1 ISNS Accuracy

This EVM revision does not follow best current sensing practice resulting in 10% to 20% current accuracy for VSNS > 10mV. This data does not match the expected performance of the TPS12S24F-Q1 part, which has been verified to match the accuracy performance specified in the datasheet.

To maximize current sense accuracy CS+/- traces must be as short as possible and length matched. In addition, avoiding vias and traces through multiple layers can further improve sensing. The next EVM revision will implement these to better demonstrate the TPS12S24F-Q1 performance. The below data represents the existing EVM performance.

To verify current sense accuracy, connect a load to the output of the tested channel.

  1. Power on VIN = 12V

  2. Enable CHx

  3. Set Gain and RSNS value

  4. Turn on load and incrementally increase current

  5. Measure voltage across the shunt resistor with accurate DMM for each load and read back ADC ISNS value from the Device Settings tab.

  6. Use measured VSNS value to compute actual current and compare to device ISNS

The below data captures the ISNS accuracy for both Ch1 and Ch2. The Ch1 data is significantly worse than Ch2 and will be improved in the next EVM revision with improved layout.

TPS12S24FQ1EVM EVM ISNS Accuracy Figure 3-1 EVM ISNS Accuracy