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

3 Power Delivery Compliance Test

The Universal Serial Bus (USB) specification defines the product design targets at the level of interfaces and mechanisms. Compliance program is to complement the specifications and enable measurement of compliance in real products. Compliance Program provides reasonable measures of acceptability. The Compliance Program uses multiple test specifications along with a Test ID (TID) to track and define the test criteria used to evaluate a product. Products that pass this level of acceptability are considered USB-IF certified and are added to the Integrator's List and have the right to license the USB-IF Logos. USB-IF WG defines and updates the Base Spec, Tests Spec, conduct compliance workshops or conference etc. Currently USBC/PD End Product Certification requires a complete Pass from below Tests :

  • Type-C Functional Tests
  • USB PD Compliance – PD Merged CTS Rev 1.4
  • Source Power Tests (Quadramax Tests)
  • Inter-Operability tests with known good devices.

This section specifies USB-IF compliance tests for USB PD3.1 device. The section includes both PD2.0 and PD3.0 test items into one specification, namely merged specification. Products must pass both PD2.0 and PD3.0 items test. Currently the USB Power Delivery Specification is revision 3.1 version 1.8. All USB PD products can be tested by one approved design listed below. The pre-condition is to scan through all test items (physical, protocol and power) by one institution. If not, all USB PD products must be tested against 2 of the 4 approved designs listed below. There is a grace period of all new tests on CTS. For silicon the period is 1 Year and for end product the period is 1.5 Years from Introduction data.

  • Granite River Labs- USB Power Delivery and USB Type-C Tester and Analyzer (GRL-USB-PD-C2)
  • MQP PDT
  • Teledyne LeCroy - Voyager M310e/M310p Protocol Analyzer / Exerciser / Compliance Test Platform
  • Ellisys USB Explorer® 350 Protocol Analyzer, Generator, and Compliance Test System

Deterministic and communication engine are integrated and include Common Bring-Up procedures, Common Procedures and Common Checks.

  • There are up to 13 Common checks. These checks are performed throughout all the tests. The correctness of basic rules of physical and protocol layers are checked. Common check failures are treated as Common check failure, not test failure. But there is not any common check failure for certification. Please refer to section 3.1 of PD spec for more information.
  • Common bring-up procedures are used to bring up the Device Under Test (DUT) in specific way for the tests. There are up to 12 Bring up procedures. Each test uses one or more bring-ups for a test execution. Please refer to section 3.2 of PD spec for more information.
  • Common Procedures determine how the testers responds to the messages from the DUT. Unless otherwise specified on specific test, the tester runs this procedure. Please refer to section 3.3 of PD spec for more information.