More Trusted Techniques to Lower EMI (Download)

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Following on the previous article, here we’ll zero in on more tried-and-true electromagnetic-interference (EMI) reduction techniques for circuit and package designs that will help electrical/electronic designers pass EMI testing standards.

Dual Random Spread Spectrum (DRSS)

Dithering or spread-spectrum techniques have been used in radio and wired communications in the past. Switching power supplies, switching converters, and switch mode controllers all typically employ dual random spread spectrum (DRSS),¹ a fairly new technique, to reduce EMI generated by switchers (for more, go here).