JP6783327B2 - 半導体装置および電力変換装置 - Google Patents
半導体装置および電力変換装置 Download PDFInfo
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- JP6783327B2 JP6783327B2 JP2018563326A JP2018563326A JP6783327B2 JP 6783327 B2 JP6783327 B2 JP 6783327B2 JP 2018563326 A JP2018563326 A JP 2018563326A JP 2018563326 A JP2018563326 A JP 2018563326A JP 6783327 B2 JP6783327 B2 JP 6783327B2
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
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- H02P27/08—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters with pulse width modulation
Description
実施の形態1.
まず本実施の形態の半導体装置の構成として、パワーモジュールの構成について図1および図2を用いて説明する。図1は実施の形態1のパワーモジュールの構成を概略的に示す上面図である。図2は実施の形態1のパワーモジュールの構成を概略的に示す断面図である。
本実施の形態においては、制御信号端子7が、第1の主端子9aが接合されるパワー半導体素子3aと部分的に重なるように配置され、制御信号端子7がパワー半導体素子3aに直接、制御端子接合材7gを介して接合されている。このため、たとえば制御信号端子7がパワー半導体素子3aの平面視における外側に配置され、制御信号端子7とパワー半導体素子3aとがボンディングワイヤを介して接合される場合に比べて、スペースを節約することができる。具体的には、ここで節約できるスペースとは、制御信号端子7が仮にパワー半導体素子3aの外側のたとえば回路基板1上に直接接合される場合に生じるスペース、および制御信号端子7とパワー半導体素子3aとをワイヤボンディングするために要するスペースの総和である。したがって、本実施の形態によれば、パワーモジュール101をより小型化することができる。また制御信号端子7とパワー半導体素子3aとの接続にボンディングワイヤを用いた場合に生じ得る、振動および熱疲労に起因する断線を抑制することができる。
図3は実施の形態2の第1例のパワーモジュールの構成を概略的に示す断面図である。図3を参照して、本実施の形態の第1例の半導体装置としてのパワーモジュール201は、基本的に実施の形態1のパワーモジュール101と同様の構成を有するため、同一の構成要素には同一の符号を付しその説明を繰り返さない。ただし本実施の形態のパワーモジュール201は、制御端子接合材7gを有さず、制御信号端子7が制御信号パッド3pの表面に直接接合されている点において、パワーモジュール101と構成上異なっている。またパワーモジュール201においては、制御信号端子7が水平方向に延びる部分のうち絶縁性ブロック5から突出した部分において、その表面の一部、特に上面の一部に凹部cc1が形成されている。
本実施の形態のパワーモジュール201,202においては、制御信号端子7が制御信号パッド3pの表面に、超音波接合法により直接接合されている。このため実施の形態1のパワーモジュール101のように制御信号端子7が制御信号パッド3pと、制御端子接合材7gを介して接合される場合に比べて、制御信号端子7と制御信号パッド3pとの接合部の強度を高くすることができる。このため制御信号端子7と制御信号パッド3pとの接合部の信頼性をより高くすることができる。
図5は実施の形態3のパワーモジュールの構成を概略的に示す断面図である。図5を参照して、本実施の形態の半導体装置としてのパワーモジュール301は、基本的に実施の形態1のパワーモジュール101と同様の構成を有するため、同一の構成要素には同一の符号を付しその説明を繰り返さない。ただし本実施の形態のパワーモジュール301は、制御信号端子7が水平方向に延びる部分のうち絶縁性ブロック5から突出した部分において、その表面の一部、特に下面(回路基板1側の表面)の一部に凹部cc2が形成されている。このため制御信号端子7の水平方向に延びる部分と制御信号パッド3pとの間に挟まれる制御端子接合材7gは、その一部が凹部cc2に嵌まり込むように配置される。つまりパワーモジュール301において制御端子接合材7gは、その一部の表面が凹部cc2の内壁面に接触するように嵌まり込んでいる。
本実施の形態のパワーモジュール301においては、制御信号端子7が凹部cc2と制御端子接合材7gとにより位置決めされる。制御端子接合材7gの一部の表面が凹部cc2の内壁面に接触するように嵌まり込み、制御端子接合材7gの凹部cc2に対する位置が決定されるためである。このため制御信号端子7と制御信号パッド3pとの接合位置のばらつきを抑制することができる。
本実施の形態は、上述した実施の形態1〜3にかかる半導体装置を電力変換装置に適用したものである。本発明は特定の電力変換装置に限定されるものではないが、以下、実施の形態4として、三相のインバータに本発明を適用した場合について説明する。
Claims (5)
- 回路基板と、
前記回路基板の一方の主表面上に接合されたパワー半導体素子と、
前記パワー半導体素子を囲うように配置され、前記パワー半導体素子の真上が開口部となっている絶縁性ブロックと、
前記絶縁性ブロック内に挿入されるように前記絶縁性ブロックに固定され、屈曲部を含み、前記屈曲部は前記絶縁性ブロックから前記パワー半導体素子上に部分的に突出し、前記パワー半導体素子と接合された制御信号端子と、
前記制御信号端子が接合された前記パワー半導体素子と同一の前記パワー半導体素子に接合された第1の主端子と、
前記回路基板に接合された第2の主端子とを備える、半導体装置。 - 前記パワー半導体素子の一方の主表面上には制御信号パッドが形成され、
前記制御信号端子は、前記制御信号パッドと、接合材を介して接合される、請求項1に記載の半導体装置。 - 前記パワー半導体素子の一方の主表面上には制御信号パッドが形成され、
前記制御信号端子は、前記制御信号パッドの表面に直接接合される、請求項1に記載の半導体装置。 - 前記制御信号端子の前記回路基板側の表面の一部に凹部が形成されている、請求項1〜3のいずれか1項に記載の半導体装置。
- 請求項1〜4のいずれか1項に記載の半導体装置を有し、入力される電力を変換して出力する主変換回路と、
前記主変換回路を制御する制御信号を前記主変換回路に出力する制御回路と備えた電力変換装置。
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PCT/JP2018/000957 WO2018135465A1 (ja) | 2017-01-17 | 2018-01-16 | 半導体装置および電力変換装置 |
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JP2021158304A (ja) * | 2020-03-30 | 2021-10-07 | 富士電機株式会社 | 半導体装置及び半導体装置の製造方法 |
US11439039B2 (en) * | 2020-12-07 | 2022-09-06 | Hamilton Sundstrand Corporation | Thermal management of electronic devices on a cold plate |
DE102021212895A1 (de) | 2021-11-17 | 2022-09-22 | Vitesco Technologies Germany Gmbh | Leistungselektronikanordnung und Verfahren zum Herstellen einer Leistungselektronikanordnung |
WO2023175854A1 (ja) * | 2022-03-17 | 2023-09-21 | 三菱電機株式会社 | 半導体装置、電力変換装置および半導体装置の製造方法 |
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JPH08125115A (ja) * | 1994-10-21 | 1996-05-17 | Sansha Electric Mfg Co Ltd | 電力用半導体モジュール |
JP3507714B2 (ja) * | 1998-12-07 | 2004-03-15 | 株式会社東芝 | マルチチップモジュール型半導体装置 |
JP2002217416A (ja) * | 2001-01-16 | 2002-08-02 | Hitachi Ltd | 半導体装置 |
JP4459883B2 (ja) * | 2005-04-28 | 2010-04-28 | 三菱電機株式会社 | 半導体装置 |
JP4988665B2 (ja) * | 2008-08-06 | 2012-08-01 | 日立オートモティブシステムズ株式会社 | 半導体装置および半導体装置を用いた電力変換装置 |
JP5233853B2 (ja) * | 2009-06-11 | 2013-07-10 | 富士電機株式会社 | 半導体装置 |
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