Achieving low noise and low EMI performance with DC/DC switching regulators

Mitigating switching regulator EMI and noise is seen by engineers can be challenging. Mess with the feng shui of the PCB layout too much, and the system may not pass CISPR standards. Because of this, many power designers simply turn to linear regulators as a guaranteed way to avoid the headache of reducing emissions. But with inferior efficiency, linear regulators then present potential thermal issues that could be avoided by using a switching regulator. How can you get the best of both worlds? This training series and documentation is meant to illustrate how engineers can get the superior efficiency of a switcher while also overcoming the challenges of EMI and noise. Both conceptual and practical examples of EMI and noise best practices are presented, along with specific commentary regarding powering automotive  systems as well as noise-sensitive analog circuitry. It may be useful to familiarize yourself with the various standards used to regulate both conducted and radiated EMI.