The basic concept, on the other hand, ensures greater efficiency and lower electromagnetic emissions. For example, design at a cost comparable to that of standard flyback converters could result in an improvement of 10 dB in electromagnetic emissions or a 5 % increase in efficiency, making this concept ideal for higher-value applications.
One of the benefits of reduced electromagnetic emissions is that the ChiBi converters can be designed without a Y-capacitor. Y-capacitors are usually used to reduce common-mode emissions by placing such a capacitor between the primary and secondary side. This usually results in a leakage current that can disturb capacitive touch panels or cause a line frequency noise (humming) in audio applications.
About the authors:
René Koch is CTO, Leader Electronics, Inc.
Tobias Herrmann is Field Application Engineer, Finepower