CN101071809A - 功率半导体模块 - Google Patents

功率半导体模块 Download PDF

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CN101071809A
CN101071809A CNA2007101011713A CN200710101171A CN101071809A CN 101071809 A CN101071809 A CN 101071809A CN A2007101011713 A CNA2007101011713 A CN A2007101011713A CN 200710101171 A CN200710101171 A CN 200710101171A CN 101071809 A CN101071809 A CN 101071809A
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power semiconductor
substrate
circuit board
printed
control
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CN101071809B (zh
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雷纳·波普
马科·莱德勒
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Semikron Elektronik GmbH and Co KG
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Abstract

本发明描述了一种功率半导体模块(10)，其包括与印制电路板(16)一起设置的电绝缘衬底(14)，印制电路板(16)通过壳体(18)与衬底(14)隔开。第一印制导线(22)在朝向印制电路板(16)的衬底(14)内侧(20)上接触，并且可以由控制IC元件(34)驱动的功率半导体元件(28)在这些第一印制导线上接触。在印制电路板(16)的朝向衬底(14)的内侧(38)上设置第二印制导线(40)。在壳体(18)内，弹性连接元件(42)通过第一和第二印制导线(22)和(40)之间的刚性压力体(44)压力接触。通过在衬底(14)的内侧(20)上除了第一印制导线(22)外还设置IC印制导线(32)和控制IC元件(24)，实现了最佳电磁兼容。

Description

功率半导体模块
技术领域
本发明涉及功率半导体模块(Leistungshalvleitermodule)，其具有与印制电路板一起布置的电绝缘衬底，印制电路板通过壳体与衬底隔开，其中第一印制导线在朝向印制电路板的衬底内侧接触，并且功率半导体元件在这些第一印制导线上接触，功率半导体元件可以由控制IC元件驱动(ansteuerbar)，在朝向衬底的印制电路板内侧上设置第二印制导线，并且弹性连接元件在第一和第二印制导线之间的壳体中压力接触。
背景技术
例如在申请人的DE 103 06 643 B4或DE 103 16 355 B3中公开了这种功率半导体模块。在这些公知的功率半导体模块中，提供控制IC元件，用于驱动印制电路板上的设置在衬底上的功率半导体元件。该印制电路板是所谓的定制板(Kundenplatine)，即在这些公知的功率半导体模块中，用于设置在衬底上的功率半导体元件的控制IC元件在定制板上实现。对于这些在衬底上具有功率半导体元件并在通过壳体与衬底隔开的印制电路板上具有控制IC元件的公知功率半导体模块，控制IC元件与相应功率半导体元件之间的连接很长。这相对长的连接使得这些公知功率半导体模块的电磁兼容性仍然可以改进，因为将电磁波耦合到这些长连接之中与它们的长度成正比。
发明内容
本发明的目的是提供一种前面所述类型的功率半导体模块，与上述类型的公知功率半导体模块相比，其可以以简单的方式生产，而且其中电磁兼容性同时得以改进。
根据本发明，在前述类型的功率半导体模块中通过以下方式实现该目的，即在衬底内侧上，除了用于功率半导体元件的第一印制导线外，还设置IC印制导线和控制IC元件。
衬底优选是DCB(直接键合铜技术：direct copper bonding)衬底。IC印制导线借助于相应的弹性连接元件而与印制电路板的相应第二印制导线压力接触。从而，既为功率半导体元件的负载接头(Lastanschluesse)也为功率半导体元件的控制接头(Steueranschluesse)提供弹性连接元件。
通过在衬底内侧不仅设置功率半导体元件而且设置控制IC元件，并且控制IC元件与功率半导体元件接触，从而实现功率半导体元件和控制IC元件之间相对短的连接，使得根据本发明的功率半导体模块的电磁兼容性相应地被改进。根据本发明的功率半导体模块的另一优点在于，其制造被简化，因为实现了功率半导体元件和设置在相同平面中、即在衬底的朝向印制电路板的内侧上的功率半导体元件的控制IC元件的接触。
在根据本发明的功率半导体模块中，控制IC元件优选通过焊线(Bonddraehte)与相应IC印制导线接触。根据本发明，由于功率半导体元件也通过焊线与相应第一印制导线接触，所以通过键合设备(Bondmaschine)可以在一个操作程序中将功率半导体元件以及用于所设置的功率半导体元件的控制IC元件分别与衬底的相应印制导线接触。这可以节省时间，从而对根据本发明的功率半导体模块的生产率有积极作用。
在根据本发明的功率半导体模块中，控制IC元件可以是未封装(gehaeuselos)元件。这样的未封装芯片元件可以容易地通过焊线而与衬底的相应印制导线接触。另一可能性是，控制IC元件是封装元件(Gehaeusebauelement)。这样的封装元件例如是SMD元件。
附图说明
通过以下对附图中以放大的比例示出的根据本发明的功率半导体模块的示例性实施例的描述，获得进一步的细节、特征和优点，其中：
图1示出功率半导体模块的截面，
图2示出具有第一印制导线、功率半导体元件和控制IC元件的衬底的顶视图。
具体实施方式
图1示出功率半导体模块10的一个实施例的截面表示，功率半导体模块10被设置用于直接安装在分段示出的散热片(Kuehlkoerper)12上。功率半导体模块10包括电绝缘衬底14和通过壳体18与衬底14隔开的印制电路板16。
如图2所示，电绝缘衬底14在其朝向印制电路板16的内侧20上具有第一印制导线22。在与内侧20相对的外侧24上，设置具有金属层26的导电衬底14，以便使电绝缘衬底14与散热片12热耦合。
在衬底14的内侧20上，设置分别与相应的第一印制导线22接触的功率半导体元件28。这一接触通过焊线30实现。
尤其如图2所清楚示出的，在电绝缘衬底14的内侧20上，除了第一印制导线22外，还设置IC印制导线32。这些IC印制导线32被设置用于通过焊线36与IC印制导线32接触的控制IC元件34(参看图1)。
功率半导体模块10的印制电路板16在面向衬底14的内侧38上具有第二印制导线40。电绝缘衬底14内侧20上的第一印制导线22通过弹性连接元件42与印制电路板16内侧38上的第二印制导线40压力接触。该压力接触借助于刚性(formstabilen)压力体(Druckkoerper)44而实现，其中刚性压力体44通过与散热片12拧紧的螺纹元件(Schraubelement)46而相对于印制电路板16的外侧48挤压。为了这一目的，压力体44被设置在其朝向印制电路板16的内侧50上，具有压力元件(Druckorganen)52和环绕凸缘54。环绕凸缘54被构造具有相互隔开的凹处56，其中冷却气流可以穿过凹处56。
刚性压力体44与增加刚性(Formstabilitaet)的金属芯(Metallseele)58相结合。
壳体18被构造具有用于弹性连接元件42的槽形导沟(Fuehrungskanaelen)60。
附图标记列表
10  功率半导体模块
12  (用于10的)散热片
14  (10的)电绝缘衬底
16  (10的)印制电路板
18  (14和16之间的10的)壳体
20  (14的)内侧
22  (20上的)第一印制导线
24  (14的)外侧
26  (24上的)金属层
28  (20上的)功率半导体元件
30  (28和22之间的)焊线
32  (20上的)IC印制导线
34  (20上的)控制IC元件
36  (34和32之间的)焊线
38  (16的)内侧
40  (38上的)第二印制导线
42  (22和40之间的)弹性连接元件
44  (用于10的)刚性压力体
46  (44和12之间的)螺纹元件
48  (16的)外侧
50  (44的)内侧
52  (50和48之间的44的)压力元件
54  (44的)环绕凸缘
56  (54中的)凹处
58  (44的)金属芯
60  (用于42的18的)槽形导沟

Claims (5)

1.一种功率半导体模块，具有用于与印制电路板(16)一起设置的电绝缘衬底(14)，所述印制电路板(16)通过壳体(18)与所述衬底(14)隔开，其中第一印制导线(22)在所述衬底(14)的朝向所述印制电路板(16)的内侧(20)上接触，并且由控制IC元件(34)驱动的功率半导体元件(28)在这些第一印制导线(22)上接触，在所述印制电路板(16)的朝向所述衬底(14)的内侧(38)上设置第二印制导线(40)，并且在第一和第二印制导线(22和40)之间的壳体(18)中弹性连接元件(42)压力接触，其特征在于，在所述衬底(14)的内侧(20)上，除所述第一印制导线(22)之外，还设置IC印制导线(32)和所述控制IC元件(24)。
2.如权利要求1所述的功率半导体模块，其特征在于，所述控制IC元件(34)通过焊线(36)而与相应的IC印制导线(32)接触。
3.如权利要求1或权利要求2所述的功率半导体模块，其特征在于，所述控制IC元件(34)是未封装芯片元件。
4.如权利要求1或权利要求2所述的功率半导体模块，其特征在于，所述控制IC元件(34)是封装元件。
5.如权利要求1到权利要求4所述的功率半导体模块，其特征在于，所述弹性连接元件(42)通过刚性压力体(44)压力接触。
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CN106298689A (zh) * 2015-05-28 2017-01-04 台达电子企业管理（上海）有限公司 封装结构
CN106298689B (zh) * 2015-05-28 2018-10-09 台达电子企业管理（上海）有限公司 封装结构
CN107026136A (zh) * 2016-02-01 2017-08-08 赛米控电子股份有限公司 具有压力施加体的功率半导体模块及其布置
CN107026136B (zh) * 2016-02-01 2022-02-22 赛米控电子股份有限公司 具有压力施加体的功率半导体模块及其布置

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CN101071809B (zh) 2011-08-03
US7495324B2 (en) 2009-02-24
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EP1855319A2 (de) 2007-11-14

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