Designing an Inverting Buck-boost Converter with Magnetic Integrated Intelligent IC Modules

Magnetic Integrated Intelligent IC Modules (MagI³C Power Modules) from Würth Elektronik eiSos are normally used as synchronous buck regulators, capable of stepping down a higher input voltage to a lower output voltage with high efficiency and a compact, low-EMI footprint. The inverting buck-boost is another topology that can be implemented with the MagI³C Power Module family using just a few adjustments. This topology converts a positive input voltage, V_IN, into a negative output voltage, -V_OUT, and the magnitude of -V_OUT can be both greater than and less than the magnitude of V_IN.