By-pass diode structure for strings of series connected cells of a photovoltaic panel

摘要

A by-pass device that uses a power MOS transistor but does not need any inductor and thus be fully integrable uses an oscillator and a charge pump circuit supplied through a protection transistor and a control circuit of a driving stage of the gate of the by-pass MOS transistor depending on the sign of the voltage on the nodes of the group of cells in series and of the by-pass MOS transistor and of the charge voltage of a tank capacitor that supplies the control circuit and the driving stage.