Abstract:
The present invention provides a substrate (1) for mounting multiple power transistors (21, 30) thereon, comprising a first metallization (3), on which the power transistors (21, 30) are commonly mountable with their collector or emitter, and which extends in at least one line (5) on the substrate (1), a second metallization (9), which extends in an area (11) next to the at least one line (5) of the first metallization (3), for connection to the remaining ones of the emitters or collectors of the power transistors (21, 30), and a third metallization (13) for connection to gate contact pads (25) of the power transistors (21, 30), whereby the third metallization (13) comprises a gate contact (15) and at least two gate metallization areas (16, 18), which are interconnectable by way of bonding means (19), the gate metallization areas (16, 18) are arranged in parallel to the at least one line (5) and spaced apart in a longitudinal direction of the at least one line (5), and at least one gate metallization area is provided as a gate island (16) surrounded on the substrate (1) by the second metallization (9). The second metallization (9) is adapted for mounting multiple power transistors (21, 30) with their collectors or emitters thereon, whereby the power transistors (21, 30) have the same orientation like the power transistors (21, 30) mounted on the first metallization (3). The substrate (1 ) comprises a fourth metallization (42), which extends in an area (44) next to the second metallization (9), for connection to the remaining ones of the emitters or collectors of the power transistors (21, 30) mountable on the second metallization (9). A fifth metallization (46) is provided for connection to gate contact pads (25) of the power transistors (21, 30) mountable on the second metallization (9), whereby the fifth metallization (46) comprises at least two gate metallization areas (16, 18), which are interconnectable by way of bonding means (19), the gate metallization areas (16, 18) are arranged in parallel to the at least one line (5) and spaced apart in a longitudinal direction of the at least one line (5), and at least one gate metallization area is provided as a gate island (16) surrounded on the substrate (1 ) by the fourth metallization (42).
Abstract:
The present invention relates to a method of connecting two components by ultrasonic welding for producing a power semiconductor module, said method comprising the steps of: a) Aligning the components to be welded to form a welding interface (16); b) Aligning a welding tool (18) to the aligned components; c) Removably arranging a trapping material (20) at least partly encompassing the welding interface (16), whereby the trapping material (20) is a foam; and d) Connecting the components by activating the welding tool (18). The method like described above provides an easy and cost- saving measure in order to prevent particle contamination when performing a welding process such as particularly an ultrasonic welding process sue to scattered particles (20).
Abstract:
A fastening device for an electric module is provided. The fastening device is adapted for fastening at least one electric conductor unit at an electric module and comprises a screw nut compartment adapted to receive a screw nut, wherein the screw nut compartment has an open first side for inserting the screw nut and / or a screw, and a second side arranged opposite to the first side. The fastening device further comprises a stiffening extension formed at the second side of the screw nut compartment, wherein the stiffening extension has a non-circular cross section.
Abstract:
The present invention provides a power semiconductor module (1) comprising an electrically conducting base plate (2), an electrically conducting top plate, arranged in parallel to the base plate (2) and spaced apart from the base plate (2), at least one power semiconductor device (3), which is arranged on the base plate (2) in a space formed between the base plate (2) and the top plate, and at least one presspin (5, 7), which is arranged in the space formed between the base plate (2) and the top plate to provide contact between the semiconductor device (3) and the top plate, whereby a metallic protection plate (11) is provided at an inner face of the top plate facing towards the base plate (2), whereby the material of the protection plate (11) has a melting temperature higher than the melting temperature of the top plate. The present invention further provides a power semiconductor module assembly, comprising multiple power semiconductor modules (1) as mentioned above, whereby the power semiconductor modules (1) are arranged side by side to each other with electric connections between adjacent power semiconductor modules (1).
Abstract:
A semiconductor module (1) comprises a base plate (2), at least one semiconductor chip (3) mounted on the base plate (2), a case (4) fixed to the base plate (2) and surrounds the at least one semiconductor chip (3), an electrically insulating gel layer (5) covering the at least one semiconductor chip (3) and a thermosetting resin layer (6) on top of gel layer (5), a lid (7) on top of the thermosetting resin layer (6). The lid (7) comprises a lid-extension (73), which defines a lid-opening (71), which extends through the thermosetting resin layer (6) to the gel layer (5) and by which lid-opening (71) the gel can expand.
Abstract:
The present invention provides a Power semiconductor module, comprising a baseplate equipped with metallizations that are electrically isolated towards the baseplate; at least one power semiconductor device being arranged on a metallization; a circuit board (12) with at least one circuit component, the circuit board having a connection area for connecting at least one circuit component to a metallization by means of a bond wire (18), wherein the circuit board (12) is mounted spaced apart from at least one power semiconductor device; a frame (16) for supporting the circuit board, and a housing for enclosing the power semiconductor module, wherein the housing is filled with an insulating gel, and wherein at least the connection area is immovably fixed to the frame (16). Such a power semiconductor module may provide a significantly increased resistance against thermocycling effects and may particularly withstand even huge amounts of expansion and contracting cycles of the insulating gel.
Abstract:
Ein Leistungshalbleitermodul umfasst eine Anzahl N parallel zu einer Basisebene angeordneter Leistungshalbleiter-Schaltelemente, von denen jedes eine Anzahl an Schaltelement-Kontakten aufweist, umfassend einen Steuerkontakt, einen ersten Leistungskontakt und einen zweiten Leistungskontakt wobei mittels einer zwischen Steuerkontakt und erstem Leistungskontakt anliegenden Steuerspannung ein Strom zwischen den Leistungskontakten schaltbar ist; eine Kontaktierungsanordnung zur Kontaktierung der Schaltelement-Kontakte, umfassend: ein erstes Verbindungsblech, welches N erste Kontakte aufweist, über welche es elektrisch leitend mit den Steuerkontakten der N Leistungshalbleiter-Schaltelemente verbunden ist, ein zweites Verbindungsblech, welches N zweite Kontakte aufweist, über welche es elektrisch leitend mit den ersten Leistungskontakten der N Leistungshalbleiter-Schaltelemente verbunden ist, ein drittes Verbindungsblech, welches n dritte Kontakte aufweist, über welche es elektrisch leitend mit zweiten Leistungskontakten zumindest einer Teilmenge enthaltend n N der N Leistungshalbleiter-Schaltelemente verbunden ist; und wobei zum Anlegen einer Steuer-Sollspannung zwischen den Steuerkontakten und den ersten Leistungskontakten der Leistungshalbleiter-Schaltelemente ein Referenzanschluss am zweiten Verbindungsblech vorgesehen ist, welcher über die zweiten Kontakte elektrisch leitend mit den ersten Leistungskontakten der N Leistungshalbleiter-Schaltelemente verbunden ist.
Abstract:
The present invention relates to a method of connecting two components by ultrasonic welding for producing a power semiconductor module, said method comprising the steps of: a) Aligning the components to be welded to form a welding interface; b) Aligning a welding tool to the aligned components; c) Removably arranging a trapping material at least partly encompassing the welding interface, whereby the trapping material is a foam; and d) Connecting the components by activating the welding tool. The method like described above provides an easy and cost-saving measure in order to prevent particle contamination when performing a welding process such as particularly an ultrasonic welding process sue to scattered particles.
Abstract:
The present invention provides a substrate (1) for mounting multiple power transistors (21, 30) thereon, comprising a first metallization (3), on which the power transistors (21, 30) are commonly mountable with their collector or emitter, and which extends in at least one line (5) on the substrate (1), a second metallization (9), which extends in an area (11) next to the at least one line (5) of the first metallization (3), for connection to the remaining ones of the emitters or collectors of the power transistors (21, 30), and a third metallization (13) for connection to gate contact pads (25) of the power transistors (21, 30), whereby the third metallization (13) comprises a gate contact (15) and at least two gate metallization areas (16, 18), which are interconnectable by way of bonding means (19), the gate metallization areas (16, 18) are arranged in parallel to the at least one line (5) and spaced apart in a longitudinal direction of the at least one line (5), and at least one gate metallization area is provided as a gate island (16) surrounded on the substrate (1) by the second metallization (9). The second metallization (9) is adapted for mounting multiple power transistors (21, 30) with their collectors or emitters thereon, whereby the power transistors (21, 30) have the same orientation like the power transistors (21, 30) mounted on the first metallization (3). The substrate (1 ) comprises a fourth metallization (42), which extends in an area (44) next to the second metallization (9), for connection to the remaining ones of the emitters or collectors of the power transistors (21, 30) mountable on the second metallization (9). A fifth metallization (46) is provided for connection to gate contact pads (25) of the power transistors (21, 30) mountable on the second metallization (9), whereby the fifth metallization (46) comprises at least two gate metallization areas (16, 18), which are interconnectable by way of bonding means (19), the gate metallization areas (16, 18) are arranged in parallel to the at least one line (5) and spaced apart in a longitudinal direction of the at least one line (5), and at least one gate metallization area is provided as a gate island (16) surrounded on the substrate (1 ) by the fourth metallization (42).
Abstract:
The present invention provides a power semiconductor module (1) comprising an electrically conducting base plate (2), an electrically conducting top plate, arranged in parallel to the base plate (2) and spaced apart from the base plate (2), at least one power semiconductor device (3), which is arranged on the base plate (2) in a space formed between the base plate (2) and the top plate, and at least one presspin (5, 7), which is arranged in the space formed between the base plate (2) and the top plate to provide contact between the semiconductor device (3) and the top plate, whereby a metallic protection plate (11) is provided at an inner face of the top plate facing towards the base plate (2), whereby the material of the protection plate (11) has a melting temperature higher than the melting temperature of the top plate. The present invention further provides a power semiconductor module assembly, comprising multiple power semiconductor modules (1) as mentioned above, whereby the power semiconductor modules (1) are arranged side by side to each other with electric connections between adjacent power semiconductor modules (1).