SLVAFR4 February   2024 TPS25762-Q1 , TPS25772-Q1

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
  5. 2Vendor Information File (VIF) Setting
    1. 2.1 Automatic VIF Generation
    2. 2.2 Generate VIF Manually
  6. 3Power Delivery Compliance Test
    1. 3.1 Basic Software for Compliance Test and Results Analysis
  7. 4Power Delivery Source Power Requirements Test
    1. 4.1 SPT.1 Load Test and SPT.2 Capabilities Test
    2. 4.2 SPT.3 Hard Reset Test
    3. 4.3 SPT.5 Over Current Test
    4. 4.4 SPT.6 PPS Voltage Step Test
    5. 4.5 SPT.7 PPS Current Limit Test
  8. 5Analysis of Some Failure Examples
  9. 6Summary
  10. 7References

2 Vendor Information File (VIF) Setting

To expedite the compliance testing process for qualifying products that support USB, product vendors are required to provide one or more Vendor Info Files (VIF’s) that describe, in detail, the product to be tested. Tool is shared by USB-IF for VIF generation.

VIF defines the capabilities of the Device Under Test (DUT). The compliance testers uses this information to devise some tests or results. But there are many parameters to be entered manually. Mismatches between VIF and Configuration settings are common compliance failures. There are two methods to generate VIF.