JP5696696B2 - 半導体装置 - Google Patents
半導体装置 Download PDFInfo
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Description
特許文献1に記載の半導体装置は、放熱ブロックの上面に半導体素子(IGBT)のコレクタ電極と、ダイオードの裏面電極とが半田によって接合されている。放熱ブロックは、半導体素子及びダイオードの発する熱の放熱手段と、半導体素子とダイオードを接続する配線との双方を兼ねている。半導体素子のエミッタ電極とダイオードの表面電極は、リードによって接合されている。
これによれば、電流通路断面積を大きくすることで第2のバスバーの抵抗値を第1のバスバーに比べて小さくすることができる。
これによれば、第2のバスバーを第1のバスバーに比べて導電性の高い材料で形成することで、第2のバスバーの抵抗値を第1のバスバーの比べて小さくすることができる。
これによれば、半導体装置に電流が流れ、配線層が発熱して熱膨張しようとすると、樹脂によって配線層の熱膨張を抑えることができる。このため、配線層の変形に伴い、配線層が絶縁層から剥離することが抑制される。
これによれば、第2のバスバーの放熱面積が増えることで、第2のバスバーに対する冷却効率を向上させて、第1のバスバーと第2のバスバー間での冷却効率の差を更に小さくすることができる。
図1に示すように、半導体装置としての三相インバータ装置10は、回路基板20の一面に6個の半導体素子41〜46が接合されるとともに、回路基板20の他面に冷却器11が熱的に接合されている。
図6に示すように、半導体素子41,43,45のそれぞれに組み込まれた第1のスイッチング素子Q1、第3のスイッチング素子Q3及び第5のスイッチング素子Q5は、三相インバータ装置10の上アーム用スイッチング素子として機能している。半導体素子42,44,46のそれぞれに組み込まれた第2のスイッチング素子Q2、第4のスイッチング素子Q4及び第6のスイッチング素子Q6は、三相インバータ装置10の下アーム用スイッチング素子として機能している。
負荷51を駆動すべく、バッテリBから三相インバータ装置10に電流が供給されると、電流が流れることで、各部材(電流が流れる部材)が発熱する。正極用バスバー34及び負極用バスバー29が発熱すると、正極用バスバー34で発した熱は、第4の金属板25、セラミック基板21及び応力緩和部材35を介して冷却器11に伝導する。負極用バスバー29で発した熱は、半導体素子42,44,46、第1の金属板22、第2の金属板23、第3の金属板24、セラミック基板21及び応力緩和部材35を介して冷却器11に伝導する。
(1)負極用バスバー29は、正極用バスバー34に比べて接合面29a,34aの面積に対する非接合面の面積の割合が大きい。この負極用バスバー29の電流通路断面積を正極用バスバー34よりも大きくすることで、三相インバータ装置10に電流が流れたときの、負極用バスバー29の発熱量(ジュール熱)が、正極用バスバー34の発熱量(ジュール熱)に比べて少なくなっている。冷却器11による冷却効率が低い負極用バスバー29の発熱量を少なくすることで、正極用バスバー34と負極用バスバー29間の冷却効率の差を小さくすることができる。
○ 図7に示すように、実施形態において、負極用バスバー29の本体部30に、本体部30の上面から垂直に立設するフィン61を形成してもよい。これによれば、負極用バスバー29の放熱面積が増えることで、負極用バスバー29に対する冷却効率を向上させて、正極用バスバー34と負極用バスバー29間での冷却効率の差を更に小さくすることができる。
○ 実施形態において、正極用バスバー34の接合面34aの面積に対する非接合面の割合が負極用バスバー29の接合面29aの面積に対する非接合面の面積の割合よりも大きい場合には、正極用バスバー34の抵抗値を負極用バスバー29の抵抗値よりも低下させる。すなわち、正極用バスバー34が第2のバスバーとなり、負極用バスバー29が第1のバスバーとなってもよい。
○ 実施形態において、半導体素子42,44,46の表面に配線層を設けて、負極用バスバー29をこの配線層に接合してもよい。
次に、上記実施形態及び別例から把握できる技術的思想について以下に追記する。
(イ)絶縁層と、前記絶縁層の一面に設けられた配線層と、前記配線層の一面に設けられた半導体素子と、前記絶縁層の他面に熱的に接合された冷却器と、前記半導体素子又は前記配線層に対し接合面を介して接合される第1のバスバーと、前記半導体素子又は前記配線層に対し接合面を介して接合される第2のバスバーと、を備え、前記第1のバスバー及び前記第2のバスバーにおける前記半導体素子又は前記配線層に対し接合されない部位の表面積を非接合面とすると、前記非接合面の面積が前記第1のバスバーに比べて前記第2のバスバーの方が大きい半導体装置であって、前記第2のバスバーの抵抗値を前記第1のバスバーの抵抗値に比べて小さくしたことを特徴とする半導体装置。
Claims (5)
- 絶縁層と、
前記絶縁層の一面に設けられた配線層と、
前記配線層の一面に設けられた半導体素子と、
前記絶縁層の他面に熱的に接合された冷却器と、
前記半導体素子又は前記配線層に対し接合面を介して接合される第1のバスバーと、
前記半導体素子又は前記配線層に対し接合面を介して接合される第2のバスバーと、を備え、
前記第1のバスバー及び前記第2のバスバーにおける前記半導体素子又は前記配線層に対し接合されない部位の表面積を非接合面とすると、前記接合面の面積に対する前記非接合面の割合が、前記第1のバスバーに比べて前記第2のバスバーの方が大きい半導体装置であって、
前記第2のバスバーの抵抗値を前記第1のバスバーの抵抗値に比べて小さくしたことを特徴とする半導体装置。 - 前記第2のバスバーは、前記第1のバスバーに比べて、電流が流れる方向に直交する方向での電流通路断面積が大きいことを特徴とする請求項1に記載の半導体装置。
- 前記第2のバスバーは、前記第1のバスバーに比べて導電性の高い材料からなることを特徴とする請求項1に記載の半導体装置。
- 前記絶縁層、前記配線層、前記半導体素子、前記第1のバスバー及び前記第2のバスバーは、前記冷却器に対して樹脂モールドされていることを特徴とする請求項1〜請求項3のうちいずれか一項に記載の半導体装置。
- 前記第2のバスバーには、フィンが形成されることを特徴とする請求項1〜請求項4のうちいずれか一項に記載の半導体装置。
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JP2012173023A JP5696696B2 (ja) | 2012-08-03 | 2012-08-03 | 半導体装置 |
US13/954,464 US8836103B2 (en) | 2012-08-03 | 2013-07-30 | Semiconductor unit |
CN201310328644.9A CN103579138A (zh) | 2012-08-03 | 2013-07-31 | 半导体单元 |
DE102013215124.1A DE102013215124B4 (de) | 2012-08-03 | 2013-08-01 | Halbleitereinheit |
KR1020130091972A KR101468325B1 (ko) | 2012-08-03 | 2013-08-02 | 반도체 장치 |
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JP2012173023A JP5696696B2 (ja) | 2012-08-03 | 2012-08-03 | 半導体装置 |
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JP (1) | JP5696696B2 (ja) |
KR (1) | KR101468325B1 (ja) |
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DE102014104716B3 (de) * | 2014-04-03 | 2015-02-26 | Danfoss Silicon Power Gmbh | Leistungshalbleitermodul |
JP6166701B2 (ja) * | 2014-08-22 | 2017-07-19 | 株式会社東芝 | 半導体装置 |
JP2016092970A (ja) * | 2014-11-05 | 2016-05-23 | 三菱電機株式会社 | 電力変換モジュール |
JP6459648B2 (ja) * | 2015-03-06 | 2019-01-30 | 株式会社デンソー | 電力変換装置 |
CN108140621B (zh) | 2015-09-29 | 2021-02-02 | 三菱电机株式会社 | 半导体装置和其制造方法 |
JP2017139380A (ja) * | 2016-02-04 | 2017-08-10 | 矢崎総業株式会社 | スイッチング制御装置 |
US10680430B2 (en) * | 2016-06-14 | 2020-06-09 | Tikla Com Inc. | Fault recovery systems and methods for electrical power distribution networks |
US10083917B1 (en) * | 2017-03-22 | 2018-09-25 | Toyota Motor Engineering & Manufacturing North America, Inc. | Power electronics assemblies and vehicles incorporating the same |
DE102017110504A1 (de) * | 2017-05-15 | 2018-11-15 | He System Electronic Gmbh & Co. Kg | Verbindungselement sowie Anordnung |
WO2018215409A1 (en) * | 2017-05-22 | 2018-11-29 | Yazaki Europe Limited | Power switch |
US11616010B2 (en) * | 2017-06-30 | 2023-03-28 | Hamilton Sundstrand Corporation | Transistor assemblies |
JP7192235B2 (ja) * | 2018-02-06 | 2022-12-20 | 株式会社デンソー | 半導体装置 |
US11107761B2 (en) * | 2018-02-06 | 2021-08-31 | Denso Corporation | Semiconductor device |
US11070140B2 (en) * | 2018-10-25 | 2021-07-20 | Eaton Intelligent Power Limited | Low inductance bus assembly and power converter apparatus including the same |
DE102020216305B4 (de) | 2020-12-18 | 2022-10-13 | Leoni Bordnetz-Systeme Gmbh | Elektrische Schaltvorrichtung |
JP7329583B2 (ja) * | 2021-12-14 | 2023-08-18 | 三菱電機株式会社 | 半導体装置および電力変換装置 |
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AU705177B1 (en) * | 1997-11-26 | 1999-05-20 | Kabushiki Kaisha Toshiba | Semiconductor device |
JP3793407B2 (ja) * | 2000-09-19 | 2006-07-05 | 株式会社日立製作所 | 電力変換装置 |
JP2003299366A (ja) * | 2002-04-03 | 2003-10-17 | Denso Corp | 電力変換装置 |
JP4499577B2 (ja) * | 2005-01-19 | 2010-07-07 | 三菱電機株式会社 | 半導体装置 |
JP4284625B2 (ja) | 2005-06-22 | 2009-06-24 | 株式会社デンソー | 三相インバータ装置 |
JP4720756B2 (ja) * | 2007-02-22 | 2011-07-13 | トヨタ自動車株式会社 | 半導体電力変換装置およびその製造方法 |
JP2008294279A (ja) * | 2007-05-25 | 2008-12-04 | Showa Denko Kk | 半導体装置 |
JP4911009B2 (ja) * | 2007-12-11 | 2012-04-04 | 株式会社デンソー | バスバーとバスバーを備えた半導体装置 |
JP5250297B2 (ja) * | 2008-04-17 | 2013-07-31 | 日立オートモティブシステムズ株式会社 | 電力変換装置 |
US8472193B2 (en) * | 2008-07-04 | 2013-06-25 | Kabushiki Kaisha Toyota Jidoshokki | Semiconductor device |
KR100992674B1 (ko) * | 2008-07-24 | 2010-11-05 | 현대자동차주식회사 | 냉각성능 확보를 위한 인버터의 직류입력단 필름캐패시터의구조 |
JP5218307B2 (ja) * | 2009-07-10 | 2013-06-26 | トヨタ自動車株式会社 | 冷却装置付きパワーモジュール |
JP2013240151A (ja) * | 2012-05-11 | 2013-11-28 | Mitsubishi Electric Corp | 電力変換装置 |
JP5924164B2 (ja) * | 2012-07-06 | 2016-05-25 | 株式会社豊田自動織機 | 半導体装置 |
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- 2012-08-03 JP JP2012173023A patent/JP5696696B2/ja not_active Expired - Fee Related
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2013
- 2013-07-30 US US13/954,464 patent/US8836103B2/en not_active Expired - Fee Related
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- 2013-08-01 DE DE102013215124.1A patent/DE102013215124B4/de not_active Expired - Fee Related
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DE102013215124A1 (de) | 2014-02-06 |
KR101468325B1 (ko) | 2014-12-03 |
US8836103B2 (en) | 2014-09-16 |
KR20140018149A (ko) | 2014-02-12 |
CN103579138A (zh) | 2014-02-12 |
US20140035120A1 (en) | 2014-02-06 |
JP2014033096A (ja) | 2014-02-20 |
DE102013215124B4 (de) | 2017-01-05 |
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