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Buck Converter Design - Mouser

Design Note DN 2013-01 January 2013 buck Converter Design Jens Ejury Infineon Technologies North America (IFNA) Corp. buck Converter Design 2 Design Note DN 2013-01 January 2013 Published by Infineon Technologies North America 27703 Emperor Blvd, suite 310 Durham, NC 27703 All Rights Reserved. Attention please! THE INFORMATION GIVEN IN THIS APPLICATION NOTE IS GIVEN AS A HINT FOR THE IMPLEMEN-TATION OF THE INFINEON TECHNOLOGIES COMPONENT ONLY AND SHALL NOT BE REGARDED AS ANY DESCRIPTION OR WARRANTY OF A CERTAIN FUNCTIONALITY, CONDITION OR QUALITY OF THE INFINEON TECHNOLOGIES COMPONENT.

At constant frequency the buck converter with rectifier diode D1 will at low current always operate in DCM mode because the diode blocks negative current flow. If the diode is being implemented by a synchronous rectifier switch (e.g. MOSFET) the CCM can even be obtained at zero output current at the same fixed frequency. The valley inductor ...

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