The buck converter, also step-down converter, is a very commonly used switching controller topology. The output voltage is always lower than the input voltage with the same polarity.
From an EMC point of view, the input line and the node between the diode, switching controller and power inductor, the so-called "hot node", are particularly critical. The power inductor represents the elementary component of the energy transfer. The power is usually in the range of a few watts.
- ANP010 Measurement DC-DC Switching Regulators
- ANP017 Designing Low-cost, Multiple Output DC/DC Converters
- ANP044 Impact of the layout, components, and filters on the EMC of modern DC/DC switching controllers
- ANP062 LC Filter Design With MLCCs: Why The Applied Voltage Matters
- ANS004 Input Filter for MagI³C Power Modules
- RD006 3 W Dual-output isolated auxiliary supply for communication interfaces and measurement systems
Würth Elektronik Webinar: Magnetics design & selection – intermediate level