DE102014116793A1 - Power semiconductor module and method for producing a power semiconductor module - Google Patents
Power semiconductor module and method for producing a power semiconductor module Download PDFInfo
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- DE102014116793A1 DE102014116793A1 DE102014116793.7A DE102014116793A DE102014116793A1 DE 102014116793 A1 DE102014116793 A1 DE 102014116793A1 DE 102014116793 A DE102014116793 A DE 102014116793A DE 102014116793 A1 DE102014116793 A1 DE 102014116793A1
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Abstract
Ein Aspekt der Erfindung betrifft ein Leistungshalbleitermodul. Dieses weist ein Modulgehäuse (6) auf, sowie einen Schaltungsträger (2) mit einem dielektrischen Isolationsträger (20) und mit einer oberen Metallisierungsschicht (21), die auf eine Oberseite (20t) des dielektrischen Isolationsträgers (20) aufgebracht ist. Auf dem Schaltungsträger (2) ist Halbleiterbauelement (1) angeordnet. Außerdem weist das Leistungshalbleitermodul einen Hochstromleiter (5) mit einem ersten Abschnitt auf, der im Inneren des Modulgehäuses (6) angeordnet ist und mit einem zweiten Abschnitt, der von der Außenseite des Modulgehäuses (6) her zugänglich ist. Der erste Abschnitt weist außerdem eine Anzahl von N ≥ 2 Fortsätzen (54) auf. Auf dem Schaltungsträger (2) ist eine Anzahl N elektrisch leitender Kontakthülsen (4) angeordnet, in die jeweils einer der Fortsätze (54) eingesteckt und dadurch elektrisch leitend mit dieser verbunden ist.One aspect of the invention relates to a power semiconductor module. This has a module housing (6), as well as a circuit carrier (2) with a dielectric insulation carrier (20) and with an upper metallization layer (21) which is applied to an upper side (20t) of the dielectric insulation carrier (20). Semiconductor component (1) is arranged on the circuit carrier (2). In addition, the power semiconductor module has a high-current conductor (5) with a first section which is arranged inside the module housing (6) and with a second section which is accessible from the outside of the module housing (6). The first section also has a number of N ≥ 2 extensions (54). On the circuit carrier (2) a number N of electrically conductive contact sleeves (4) is arranged, in each of which one of the extensions (54) is inserted and thereby electrically conductively connected thereto.
Description
Die vorliegende Erfindung betrifft ein Leistungshalbleitermodul und ein Verfahren zur Herstellung eines Leistungshalbleitermoduls. The present invention relates to a power semiconductor module and a method for manufacturing a power semiconductor module.
Da Leistungshalbleitermodule häufig sehr hohe Ströme schalten, müssen sie elektrische Anschlüsse mit einer hohen Strombelastbarkeit aufweisen. Bei herkömmlichen Halbleitermodulen werden hierzu häufig breite Anschlussbleche verwendet, die auf einen Schaltungsträger des Halbleitermoduls gelötet werden. Aufgrund der Wärmekapazität derartiger Anschlussbleche ist damit eine starke thermische Belastung des Schaltungsträgers verbunden, was dazu führen kann, dass der Schaltungsträger und/oder ein elektrisches Bauelement, mit dem der Schaltungsträger vorbestückt ist, beschädigt oder zerstört werden kann. Since power semiconductor modules often switch very high currents, they must have electrical connections with a high current-carrying capacity. In conventional semiconductor modules, for this purpose, wide connection plates are frequently used, which are soldered onto a circuit carrier of the semiconductor module. Due to the heat capacity of such connection plates so that a strong thermal load of the circuit substrate is connected, which may result in that the circuit carrier and / or an electrical component with which the circuit carrier is pre-equipped, damaged or destroyed.
Alternativ ist es bekannt, mehrere einzelne Pins zu verwenden, die jeweils ein erstes Ende aufweisen, das im Inneren eines Modulgehäuses angeordnet sind, sowie ein zweites Ende, das aus dem Modulgehäuse herausgeführt ist. Die ersten Enden sind im Inneren des Modulgehäuse an eine Metallisierung des Schaltungsträgers angeschlossen und dadurch elektrisch leitend miteinander verbunden, während die zweiten Enden an eine Leiterkarte angeschlossen und dadurch elektrisch parallel geschaltet sind. Allerdings sind dazu hochstromfähige und damit teure Leiterkarten erforderlich. Alternatively, it is known to use a plurality of individual pins, each having a first end disposed inside a module housing, and a second end led out of the module housing. The first ends are connected in the interior of the module housing to a metallization of the circuit substrate and thereby electrically conductively connected to each other, while the second ends are connected to a printed circuit board and thereby electrically connected in parallel. However, highly currentable and therefore expensive printed circuit boards are required.
Die Aufgabe der vorliegenden Erfindung besteht darin, ein Leistungshalbleitermodul ein Verfahren zur Herstellung eines Leistungshalbleitermoduls bereitzustellen, das einen hochstromfähigen elektrischen Anschluss aufweist, das einfach und ohne die Gefahr einer Zerstörung von Bestandteilen des Halbleitermoduls herzustellen ist. The object of the present invention is to provide a power semiconductor module a method for manufacturing a power semiconductor module having a high-current capable electrical connection, which is easy to produce and without the risk of destruction of components of the semiconductor module.
Diese Aufgabe wird durch ein Leistungshalbleitermodul gemäß Patentanspruch 1 bzw. durch ein Verfahren zur Herstellung eines Leistungshalbleitermoduls gemäß Patentanspruch 13 gelöst. Ausgestaltungen und Weiterbildungen der Erfindung sind Gegenstand von Unteransprüchen. This object is achieved by a power semiconductor module according to claim 1 or by a method for producing a power semiconductor module according to claim 13. Embodiments and developments of the invention are the subject of dependent claims.
Ein erster Aspekt betrifft ein Leistungshalbleitermodul. Dieses weist ein Modulgehäuse auf, einen Schaltungsträger, einen auf dem Schaltungsträger angeordneten Halbleiterbauelement, und einen Hochstromleiter. Der Schaltungsträger weist einen dielektrischen Isolationsträger auf, sowie eine obere Metallisierungsschicht, die auf eine Oberseite des dielektrischen Isolationsträgers aufgebracht ist. Außerdem enthält das Halbleitermodul einen Hochstromleiter mit einem ersten Abschnitt, der im Inneren des Modulgehäuses angeordnet ist, sowie mit einem zweiten Abschnitt, der von der Außenseite des Modulgehäuses her zugänglich ist. Der erste Abschnitt besitzt eine Anzahl von N ≥ 2 Fortsätzen. Auf dem Schaltungsträger ist eine Anzahl N elektrisch leitender Kontakthülsen angeordnet, in die jeweils einer der Fortsätze eingesteckt und dadurch elektrisch leitend mit dieser verbunden ist. A first aspect relates to a power semiconductor module. This has a module housing, a circuit carrier, a semiconductor component arranged on the circuit carrier, and a high-current conductor. The circuit carrier has a dielectric isolation carrier, as well as an upper metallization layer, which is applied to an upper side of the dielectric isolation carrier. In addition, the semiconductor module includes a high current conductor having a first portion disposed inside the module housing and a second portion accessible from the outside of the module housing. The first section has a number of N ≥ 2 extensions. On the circuit carrier, a number N of electrically conductive contact sleeves is arranged, in each of which one of the extensions inserted and thereby electrically conductively connected thereto.
Ein zweiter Aspekt betrifft ein Verfahren, mit dem ein gemäß einem ersten Aspekt ausgebildetes Leistungshalbleitermodul hergestellt wird. Bei dem Verfahren wird ein Hochstromleiter bereitgestellt, der einen ersten Abschnitt und einen zweiten Abschnitt aufweist. Der erste Abschnitt weist eine Anzahl von N ≥ 2 Fortsätzen auf. Ebenfalls bereitgestellt werden ein Modulgehäuse, sowie ein Schaltungsträger, der einen dielektrischen Isolationsträger aufweist und eine obere Metallisierungsschicht, die auf eine Oberseite des dielektrischen Isolationsträgers aufgebracht ist. Außerdem ist der Schaltungsträger mit einem Halbleiterbauelement bestückt, sowie mit einer Anzahl N elektrisch leitender Kontakthülsen. In jede der Kontakthülsen wird einer der Fortsätze eingesteckt. Außerdem wird das Modulgehäuse – vor oder nach dem Einstecken der Fortsätze in die Kontakthülsen – auf den Schaltungsträger aufgesetzt, so dass nach dem Einstecken der Fortsätze in die Kontakthülsen und nach dem Aufsetzen des Modulgehäuses auf den Schaltungsträger der ersten Abschnitt des Hochstromleiters im Inneren des Modulgehäuses angeordnet ist und der zweite Abschnitt des Hochstromleiters von der Außenseite des Modulgehäuses her zugänglich ist. A second aspect relates to a method with which a power semiconductor module designed according to a first aspect is produced. The method provides a high current conductor having a first portion and a second portion. The first section has a number of N ≥ 2 extensions. Also provided are a module housing, as well as a circuit carrier, which has a dielectric insulating carrier and an upper metallization layer, which is applied to an upper side of the dielectric insulating carrier. In addition, the circuit carrier is equipped with a semiconductor device, as well as with a number N of electrically conductive contact sleeves. In each of the contact sleeves one of the extensions is inserted. In addition, the module housing - before or after inserting the extensions in the contact sleeves - placed on the circuit board, so that after insertion of the extensions in the contact sleeves and after placing the module housing on the circuit board of the first portion of the high current conductor arranged inside the module housing is and the second portion of the high current conductor is accessible from the outside of the module housing forth.
Diese sowie weitere Aspekte der Erfindung werden nachfolgend anhand von Ausführungsbeispielen unter Bezugnahme auf die beigefügten Figuren erläutert. Es zeigen: These and other aspects of the invention are explained below with reference to embodiments with reference to the accompanying figures. Show it:
Die Darstellung in den Figuren ist nicht maßstäblich. Sofern nicht anders angegeben, bezeichnen in den Figuren gleiche Bezugszeichen gleiche oder gleichwirkende Elemente. The representation in the figures is not to scale. Unless otherwise indicated, like reference characters designate like or equivalent elements in the figures.
Bei dem Schaltungsträger
Der Schaltungsträger
Beispielsweise kann ein elektronisches Bauteil
Ein Bauteil
Bei dem gezeigten Beispiel ist das Bauteil
Weiterhin ist der Schaltungsträger
Wie aus
Zum einen wird die Montage der Kontakthülsen
On the one hand, the assembly of the
Die Anzahl N der Fortsätze
Nach ein oder mehrere Hochstromleiter
Anders als mit den
Bei dem Beispiel gemäß den
Um zu verhindern, dass sich der Hochstromleiter
So zeigt beispielsweise
Gemäß einer weiteren, anhand der
Unabhängig davon, ob es sich bei dem Gewinde um ein Außen- oder Innengewinde handelt, lässt sich ein Verdrehen natürlich nicht nur mit Hilfe eines im Querschnitt rechteckigen Abschnitts
Allerdings können Abschnitte
Abweichend von den bisher erläuterten Beispielen kann ein Leistungshalbleitermodul
Wie insbesondere auch den
Noch eine weitere Ausgestaltung wird nachfolgend anhand der
Ein Vorteil eines als Blech ausgebildeten Hochstromleiters
Abgesehen davon, dass der als Blech ausgebildete Hochstromleiter
Demgemäß werden wenigstens zwei, mehr als zwei oder sämtliche der Fortsätze
Auf den auf diese Weise mit dem Hochstromleiter
Wie weiterhin in
Alternativ zu dem in den
Bei einem als Blech ausgebildeten Hochstromleiter
Generell kann es sich bei einem als Blech ausgebildeten Hochstromleiter
Bei sämtlichen vorangehend erläuterten Ausgestaltungen der Erfindung kann ein Hochstromleiter
Weiterhin können sämtliche Fortsätze
Mit der vorliegenden Erfindung lassen sich Hochstromleiter
Claims (13)
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