Practical Implementation of an LLC Converter with Integrated Resonant Circuit Elements

The article shows the relevance of using converters based on an LLC resonant circuit in power supplies for computing and data storage systems. It is shown that the use of parasitic parameters of a transformer as elements of a resonant circuit makes it possible to reduce the number of separate magnetic elements of the converter. Integration of the inductance of a series resonant circuit into a transformer leads to a change in frequency characteristics. Equals which are given, allow one to calculate the voltage gain of the resonant circuit. The results of prototyping the converter are presented. The design of a transformer is shown. Soft switching of converter transistors with integrated circuit elements is shown.