EMI and noise mitigation techniques in practice
In this section, we will examine the impacts of various mitigation techniques to help you decide which approach makes the most sense in your design.
Now that we understand the sources of EMI and noise in switching regulators, and some of the common approaches to mitigating each, let's take a closer look at real-world examples of reducing their effects. In this section, we will examine the impacts of various mitigation techniques to help you decide which approach makes the most sense in your design. Techniques covered in this discussion include external component placement, filter options and design, frequency manipulation via spread spectrum or dithering, snubbers, boot resistors, and more.
Resources:
- White paper: Measuring various types of low-frequency noise in DC/DC switching converters
- Article: Reducing noise on the output of a switching regulator
- Article: The Engineer’s Guide to EMI in DC/DC converters
- Article: Reduce buck-converter EMI and voltage stress by minimizing inductive parasitics
- Application note: Simple success with conducted EMI from DC/DC converters
- Reference design: CISPR-22 EMI-optimized reference design featuring LMR23630 synchronous DC/DC buck converter
- Technical article: Which multichannel buck converter layout offers better EMI performance?
- Technical article: How to reduce acoustic noise of MLCCs in power applications
- Technical article: Make a boost converter quieter
Training:
