A Standalone Controller Eases Compliance With USB PD Standards

Focus:

USB Power Delivery (PD) poses new power requirement challenges because of the variety of voltage and current combinations available—5 V, 9 V, 15 V, 20 V, 28 V, 36 V, 48 V and 1.5 A, 3 A, and 5 A, etc.—to supply the wide range of power levels the USB PD standard can provide. This article reviews the evolution of USB power delivery up to the latest version of the standard (USB 3.1), discusses the benefits of and system requirements for implementing USB PD (including backwards compatibility with earlier versions of the standard), and describes what functional blocks are needed. While some USB PD solutions require multiple ICs, there are single-chip solutions like the MAX77958 standalone PD controller, whose features are discussed here. This PD controller manages the power negotiations without firmware development.

What you’ll learn:

• How to understand design requirements for implementing USB Power Delivery per USB 3.1
• How to simplify USB PD designs through use of a standalone controller

View the Source

Author & Publication:

Samantha Morehead and Sagar Khare, Maxim Integrated, San Jose, Calif., How2Power Today, Sep 15 2021

This article summary appears
in the HOW2POWER Design Guide.

The Design Guide offers
organized access to
hundreds of articles
on dozens of power conversion
and power management topics.

The Design Guide search results
include exclusive summaries
and accurate "how to" analysis
to help you make faster,
more informed decisions.

Search
for more articles