A two-phases interleaved One Cycle Control PFC for Automotive Applications

The electrification of cars is bringing new challenges to the power electronics designers, AC/DC and DC/DC converters are now needed also in the automotive world, car and OEM Manufacturers are striving to address this need in an economical and efficient way. This paper discusses the implementation of a two-phases interleaved OCC-PFC, targeted for Automotive AC/DC charger applications, delivering up to 3kW output power. The article guides the audience to the several steps of the 2PH OCC-PFC implementation, from the current sensing to the synchronisation and interleaving of the two or more phases of the converter. Results of the real hardware implementation are presented and discussed using waveforms and performances measured in the demoboard. These chargers are going to be equipping all eCar in the future and will become a standard device in our everyday life, just like the AC/DC adaptor of our Smart phones.