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Controlling Conducted Noise in Military-Grade DC/DC Switching Power Supplies Using Multiphase Synchronization Techniques
Press Article – October 2022
Switching DC/DC converters in military applications must meet stringent standards for limits on conducted input noise emissions, and they typically require input filter networks for compliance.
However, when inputs of DC/DC converters are paralleled, noise can combine in indeterminate ways, making filter design difficult. This article discusses the issue and describes a way to achieve a consistent and substantial reduction in emissions using the phased switching-frequency synchronization technique.