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Online Simulation Validates Output Error Budget Analysis For Buck Converter

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

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:

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