Abstract: A voltage converter is designed to convert an alternating input voltage into a direct output voltage. The voltage converter includes a first sub-converter having a first switch half-bridge, which is coupled to a first pole of the input voltage by a first main coil, and a second sub-converter having a second switch half-bridge, which is coupled to the first pole of the input voltage by a second main coil. In addition, the voltage converter includes a diode half-bridge, which is jointly used by the first sub-converter and the second sub-converter. The voltage converter has a first return coil and a second return coil, which couple a center point of the diode half-bridge to a second pole of the input voltage. The first and second main coils and the first and second return coils form a coupled choke, the coupled choke having a choke core.

Abstract: In a half-bridge module for an inverter, semiconductor switches and signal and power connections are arranged on a first surface of a substrate and coated with a casting compound, and external connection contacts for the signal and power connections extend through the casting compound to the exterior. In various embodiments, the external connection contacts extend from the casting compound from four second surfaces that are orthogonal to the first surface, and have a first right angle bend outside the casting compound, such that the ends of the external connection contacts are perpendicular to the first surface. The invention also relates to a corresponding inverter.

Abstract: A symmetrical DC-to-DC boost converter includes two magnetically coupled chokes, of which one choke is connected to a negative DC voltage input in the DC-to-DC boost converter, while the other choke is connected to a positive DC voltage input in the DC-to-DC boost converter, such that a symmetrical topology is obtained with separate DC voltage inputs, wherein the coupled chokes have three cores in a series, each of which is connected at the top and bottom to a connecting core, and there is at least one winding on each of the two outer cores that is dedicated to one of the chokes, while the middle core does not have a winding, and has at least one air gap and/or is at least partially made of a low permeability powdered material, and therefore forms a magnetic energy storage.

Abstract: A symmetrical DC-to-DC boost converter includes a DC input voltage source with a negative DC voltage input and a positive DC voltage input, a negative DC and positive DC voltage output, at least four switches, and two chokes, one of which is connected to the negative DC voltage input and two adjacent switches, and the other of which is connected to the positive DC voltage input and two other adjacent switches, such that a symmetrical topology with separate DC voltage inputs is obtained. Furthermore, there is an input capacitor between the voltage inputs and a first symmetry capacitor connected to the negative DC voltage input and the negative DC voltage output, as well as a second symmetry capacitor connected to the positive DC voltage input and the positive DC voltage output.

Abstract: A power electronics module includes a printed circuit board populated with numerous components of the power electronics module. Power semiconductors and DC and AC connecting elements are either placed adjacently to one another on an organic insulator, and each thermally and mechanically connected to a heat sink through the organic insulator, or the DC and AC connecting elements are placed between the power semiconductors and the heat sink and are thermally and mechanically connected to the heat sink and to the power semiconductors.

Abstract: A cooling device for a power converter for a vehicle includes a heat sink having a heat discharging structure on a first side for discharging heat acting on the heat sink, and a connecting surface on the second side opposite the first side for absorbing heat from a semiconductor connected to the connecting surface, wherein the semiconductor has a discharge surface for discharging heat to the connecting surface, and an insulating layer having a polymer with ceramic particles that is located between the connecting surface on the heat sink and the discharge surface on the semiconductor, and is designed to mechanically and thermally connect the heat sink to the semiconductor and to insulate them from one another.

Abstract: The invention relates to a half bridge module in a traction inverter for a power electronics unit in an electric or hybrid vehicle, comprising a substrate, semiconductor switching elements on a first side of the substrate, power connections, to which power lines that conduct electrical traction energy are connected, signal connections, to which signal lines are connected for switching the semiconductor switching elements, and a casting compound, which encompasses the substrate and the semiconductor switching elements on the first side of the substrate, wherein the power connections and the signal connections are accessed from the first side of the substrate, such that the power connections and the signal connections extend through the casting compound, seen from the first side of the substrate, and are located within a base area spanning the substrate, seen from the direction they pass through the casting compound.

Abstract: An inverter includes a DC input, a link capacitor including a plurality of input contacts fitted to a capacitor housing, a plurality of half-bridges, each including semiconductor switching elements for converting the DC current into an AC current having a plurality of phase currents, wherein the half-bridges are arranged in a row along a transverse direction to the inverter, a positive DC conductor rail and a negative DC conductor rail for the infeed of DC current to the half-bridges, wherein the positive and/or negative DC conductor rail extends in a transverse direction to the inverter over the row of half-bridges, such that the width of the positive and/or negative DC conductor rail extends to the width of the row of half-bridges, an AC conductor rail assembly for the output of AC current to the electric drive, and a cooler for cooling the half-bridges.

Abstract: A half-bridge having semiconductor switch elements embedded in a modular layer system that comprises a contact plane and a metal plating for establishing contact with the semiconductor switch elements, wherein the signal connections and power connections are located on a first surface of the substrate, wherein the modular layer system, signal connections and power connections are cast in a casting compound, wherein external sections of the power connections and/or signal connections formed in the conductor frame each extend from the casting compound, from a second surface that is orthogonal to the first surface, wherein the external sections each have an end that is perpendicular to the first surface.

Abstract: A half-bridge includes a substrate, semiconductor switches, power connections and signal connections, the power and signal connections are formed in a flat conductor frame, the signal connections are electrically connected to the semiconductor switches such that they can be switched via the signal connections and the power connections are electrically connected to the semiconductor switches such that they allow or interrupt electricity transfer between the power connections, the semiconductor switches, signal connections, and power connections are on a first surface of the substrate in a casting compound, first end sections of the signal connections formed in the conductor frame each extend from a second surface orthogonal to the first surface, exiting the casting compound, second end sections of the signal connections, which are separate from the flat conductor frame, are connected to the first end section outside the casting compound and are perpendicular to the first surface.

Abstract: A storage choke is disclosed. In an embodiment a storage choke includes at least two coils and a core, wherein the core couples the coils to one another, and wherein the core comprises a first region comprising a first material and a second region comprising a second material that is different from the first material.

Abstract: In a half-bridge module for an inverter, semiconductor switches and signal and power connections are arranged on a first surface of a substrate and coated with a casting compound, and external connection contacts for the signal and power connections extend through the casting compound to the exterior. The external connection contacts may extend from the casting compound from four second surfaces that are orthogonal to the first surface, and may have a first right angle bend outside the casting compound, such that the ends of the external connection contacts are perpendicular to the first surface. The invention also relates to a corresponding inverter.

Abstract: The invention relates to a half-bridge module for an inverter in an electric drive for an electric vehicle or a hybrid vehicle, comprising a substrate, semiconductor switches arranged on the substrate, power connections, and signal connections, wherein the signal connections are electrically connected to the semiconductor switches such that the semiconductor switches can be switched via the signal connections, and wherein the power connections are electrically connected to the semiconductor switches such that the semiconductor switches allow or interrupt electricity transmission between the power connections. The half-bridge module according to the invention is distinguished in that the semiconductor switches are in electrical contact in part via bond wires and in part via lead frames. The invention also relates to a corresponding inverter.

Abstract: The invention relates to a half bridge module in a traction inverter for a power electronics unit in an electric or hybrid vehicle, comprising a substrate, semiconductor switching elements on a first side of the substrate, power connections, to which power lines that conduct electrical traction energy can be connected, signal connections, to which signal lines can be connected for switching the semiconductor switching elements, and a casting compound, which encompasses the substrate and the semiconductor switching elements on the first side of the substrate, wherein the power connections and the signal connections can all be accessed from the first side of the substrate, such that the power connections and the signal connections extend through the casting compound, seen from the first side of the substrate, and are located within a base area spanning the substrate, seen from the direction they pass through the casting compound.

Abstract: A voltage converter is designed to convert an alternating input voltage into a direct output voltage. The voltage converter includes a first sub-converter having a first switch half-bridge, which is coupled to a first pole of the input voltage by a first main coil, and a second sub-converter having a second switch half-bridge, which is coupled to the first pole of the input voltage by a second main coil. In addition, the voltage converter includes a diode half-bridge, which is jointly used by the first sub-converter and the second sub-converter. The voltage converter has a first return coil and a second return coil, which couple a center point of the diode half-bridge to a second pole of the input voltage. The first and second main coils and the first and second return coils form a coupled choke, the coupled choke having a choke core.

Abstract: A storage choke is disclosed. In an embodiment a storage choke includes at least two coils and a core, wherein the core couples the coils to one another, and wherein the core comprises a first region comprising a first material and a second region comprising a second material that is different from the first material.

Abstract: The invention relates to a combined transformer for an LLC resonant converter. The combined transformer includes a primary transformer winding configured to generate during operation a first magnetic flux, which forms a first magnetic circuit. The combined transformer also includes a resonant inductor having a winding, wherein the resonant inductor is configured to generate during operation a second magnetic flux, which forms a second magnetic circuit. The primary transformer winding and the winding of the resonant inductor are arranged with respect to one another such that at least one first part of the first magnetic circuit and at least one second part of the second magnetic circuit run on a magnetic path common to the first part and to the second part. The invention also relates to an LLC resonant converter with such a combined transformer.

Abstract: The invention relates to a combined transformer for an LLC resonant converter. The combined transformer includes a primary transformer winding configured to generate during operation a first magnetic flux, which forms a first magnetic circuit. The combined transformer also includes a resonant inductor having a winding, wherein the resonant inductor is configured to generate during operation a second magnetic flux, which forms a second magnetic circuit. The primary transformer winding and the winding of the resonant inductor are arranged with respect to one another such that at least one first part of the first magnetic circuit and at least one second part of the second magnetic circuit run on a magnetic path common to the first part and to the second part. The invention also relates to an LLC resonant converter with such a combined transformer.