Lear Automotive (eeds) Spain, S.l.

Hugo Valderrama Blavi

Jordi Bigorra Vives

Carles Borrego Bel

Jordi Giro Roca

Joan Fontanilles Pi&ntilde;as

Luis Martinez-Salamero

Javier Maixe Altes

The invention is designed for vehicles having two electrical power supply systems and corresponding differentiated voltage level charges and two batteries operating at a first and a second voltage level. A bidirectional voltage converter cooperates with both systems whose input and output stages are galvanically insulated and include a switch. The batteries are connected to said input and output at a first and a second voltage level so that said bidirectional converter can provide a first reduced voltage mode and a second increased voltage mode. The passive components, e.g. the magnetic components and capacitances, of said stages have been chosen to provide an identical transitional behavior in both modes when a disruption occurs in the regulating system either in the charge or the input voltage.

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Tarragona, Spain

Hugo Valderrama Blavi