Buck regulators are versatile components known for their efficiency. However, deploying them in products that must meet the electromagnetic-interference (EMI) requirements of groups such as the Comité International Spécial des Perturbations Radioélectriques (CISPR) can present challenges.
The high switching frequencies that drive the regulators’ high performance can exacerbate emissions. Fortunately, regulators with integrated capacitors, and employ spread-spectrum switching techniques, can help you meet EMI requirements with ease.