This User Guide describes how to set up and use the 3−Ph OBC PFC−LLC On−Board Charger platform. The system incorporates a 3−Ph Power Factor Correction (PFC) stage based on a 3−leg voltage source inverter and the DC−DC conversion stage based on an LLC resonant converter. Each of these two stages consist of a main board with all the necessary subsystems to run either as an OBC − cascading the boards PFC and LLC− or as separated stand−alone systems.