Switching Mode Power Supplies (SMPS) are prevalent in modern electronics due to their high power efficiency. One of the rare drawbacks of SMPS dc/dc converters is the noise generated onto the input bus, due to their switching operating mode.

Unlike linear power supplies, Switching Mode Power Supplies such as DC/DC converters, generate conducted switching current noise which induces radiated noise emissions. The regulatory standards that rule SMPS performance impose limits on conducted and radiated noise. For simple architectures using only one switcher, it is usually sufficient to mitigate the current noise using LC filters.

As architectures become more complex with several output channels and several switchers, it’s now possible to leverage Gaia’s modular solution functions to reduce or even cancel the fundamental switching frequency tone of architecture conducted noise.