Online Simulation Validates Output Error Budget Analysis For Buck Converter

Focus:

A buck converter design for a particular Maxim customer specified a tight output voltage tolerance across all operating conditions. To ensure the ensuing design met this goal, it was necessary to perform an output voltage error budget analysis. In general, the biggest contributor to the error is the output droop consequent to the load step. However, using different methods to estimate the droop led to different results. In this article, the authors perform an output error budget analysis for a buck converter design. In estimating the droop amplitude, they compare a simulated result (obtained using Maxim’s EE-Sim, a SIMPLIS-based design tool), with two different back-of-the-envelope (CdV/dt and LC resonant) estimates and reconcile the different approaches.

What you’ll learn:

• How to determine when to use the Cdv/dt method versus the LC resonant method when estimating output voltage droop for a voltage regulator design
• How to estimate output voltage tolerance for a voltage regulator design

View the Source

Author & Publication:

Brooks Leman, Mark Fortunato and Nazzareno (Reno) Rossetti, Maxim Integrated, San Jose, Calif., How2Power Today, Jan 15 2018

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