TPS257xx-Q1 Pass Compliance and QuadraMAX Best Practice

Abstract

Passing USB Power Delivery Compliance Test Specification (CTS) issued by USB-IF is required for all USB Power Delivery (PD) end-products. Programmable Power Supply (PPS) function can be validated based on Power Delivery Source Power Requirements Test document if required by customer. This application note shows some compliance test cases and QuandraMAX test practice based on TPS257xx-Q1 products. VIF configurations are also introduced.

Trademarks

TypeC® is a registered trademark of usb.org.

All trademarks are the property of their respective owners.

1 Introduction

The TPS257xx-Q1 is a highly integrated USB TypeC® Power Delivery controller for use in single and dual USB port applications including: charging only; charging with USB 2.0 or USB3.0 data; and charging with USB data and DisplayPort™ alternate mode. The power communication talking message is transferring on CC line referring to USB-PD protocol. As USB-PD negotiation completed, appropriate power path enabled and corresponding power mode set.

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.