Reducing EMI via considerations external to the IC
For many engineers, layout for EMI mitigation is a black art. It may seem like the slightest adjustment could be the difference between passing or failing CISPR standards. Because of this, some power designers may shy away from using devices with switching elements as a guaranteed way to avoid the headache of reducing emissions. But this may be trading one problem for another, as switching devices generally have better efficiency and thermal performance. That's why we created this training series- we want you to be able to get the best of both worlds: solid efficiency and thermal performance without having to worry about emissions.
This training series will dive into the many approaches to solving the emissions problems raised through the use of devices with internal switching elements. Pi filters, ferrite beads, loop sizes, you name it - it's all here in one place.
- Article: Reduce buck-converter EMI and voltage stress by minimizing inductive parasitics
- App note: Simple Success With Conducted EMI From DCDC Converters
- Technical article: Which multichannel buck converter layout offers better EMI performance?
- App note: Designing High-Performance, Low-EMI Automotive Power Supplies
- White paper: Flyback transformer design considerations for efficiency and EMI
- Technical article: Maintaining stability with the addition of an input LC filter