Abstract: A circuit system having a voltage converter having an input path, an output path, and having a plurality of phases, each phase having at least one half-bridge and at least one fuse, each branch of the half-bridge having a respective MOSFET. The circuit system recognizes a defective MOSFET and controls the MOSFETs of the intact phases in such a way that a sufficiently large current trips the fuse connected in series with the defective MOSFET in order to enable an emergency operation of the voltage converter. A method for operating such a circuit system is also described.

Abstract: A protective circuit assemblage for a multi-voltage electrical system includes: a DC voltage converter provided in the region of the transition between a high-voltage loop and a low-voltage loop; and at least one switch respectively provided in each of the high-voltage loop and the low-voltage loop.

Abstract: The invention relates to a coupling device (4) for four phases of a multi-phase converter (2). Said coupling device (4) includes four coupling modules (6, 8, 12, 14), each of which encompasses four parallel through-holes. At least one section of a conductor loop (18, 20, 22, 24) for a phase. At least one section of a conductor loop (18, 20, 22, 24) for a phase penetrates a through-hole of a coupling module (6, 8, 12, 14), sections of conductor loops (18, 20, 22, 24) for at least two phases penetrating all four through-holes of a coupling module (6, 8, 12, 14).

Abstract: A circuit system having a voltage converter having an input path, an output path, and having a plurality of phases, each phase having at least one half-bridge and at least one fuse, each branch of the half-bridge having a respective MOSFET. The circuit system recognizes a defective MOSFET and controls the MOSFETs of the intact phases in such a way that a sufficiently large current trips the fuse connected in series with the defective MOSFET in order to enable an emergency operation of the voltage converter. A method for operating such a circuit system is also described.

Abstract: A protective circuit assemblage for a multi-voltage electrical system includes: a DC voltage converter provided in the region of the transition between a high-voltage loop and a low-voltage loop; and at least one switch respectively provided in each of the high-voltage loop and the low-voltage loop.

Abstract: The invention relates to a coupling device (4) for four phases of a multi-phase converter (2). Said coupling device (4) includes four coupling modules (6, 8, 12, 14), each of which encompasses four parallel through-holes. At least one section of a conductor loop (18, 20, 22, 24) for a phase. At least one section of a conductor loop (18, 20, 22, 24) for a phase penetrates a through-hole of a coupling module (6, 8, 12, 14), sections of conductor loops (18, 20, 22, 24) for at least two phases penetrating all four through-holes of a coupling module (6, 8, 12, 14).

Abstract: Disclosed is a multi-phase converter comprising a plurality of electric phases, each of which can be triggered by a switching means. At least one coupling means (100 to 106) is provided for coupling a phase to another phase, each phase having two windings.

Abstract: Disclosed is a multiphase converter comprising multiple phases (11 to 16), each of which can be triggered using switching means (21 to 26), at least one phase (11) being magnetically coupled to at least three other phases (12, 14, 16) by corresponding coupling means (31, 36, 37).

Abstract: Disclosed is a multiphase converter comprising multiple electric phases (11 to 16), each of which can be triggered using switching means (21 to 26). Coupling means (31, 36, 37) are provided which magnetically couple at least one first phase (11) to at least two other phases (12, 14, 16). At least two coupling means (31, 36, 37) are provided for magnetically coupling one of the phases (11) to at least two other phases (12, 14, 16), at least one of the two coupling means (37) having less inductance than the other coupling means (31, 36).

Abstract: An electric circuit for triggering a piezoelectric element, a fuel injection system of a motor vehicle in particular, is described. A first measuring shunt connected in series to the piezoelectric element is provided. Provided are two transistors connected in series whose shared connecting point is connected to the piezoelectric element. A second measuring shunt is also provided. The two transistors and the second measuring shunt are connected in series.

Abstract: An electric circuit for triggering a piezoelectric element, a fuel injection system of a motor vehicle in particular, is described. A first measuring shunt connected in series to the piezoelectric element is provided. Provided are two transistors connected in series whose shared connecting point is connected to the piezoelectric element. A second measuring shunt is also provided. The two transistors and the second measuring shunt are connected in series.