JP4853493B2 - 半導体装置 - Google Patents
半導体装置 Download PDFInfo
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- JP4853493B2 JP4853493B2 JP2008131097A JP2008131097A JP4853493B2 JP 4853493 B2 JP4853493 B2 JP 4853493B2 JP 2008131097 A JP2008131097 A JP 2008131097A JP 2008131097 A JP2008131097 A JP 2008131097A JP 4853493 B2 JP4853493 B2 JP 4853493B2
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- 239000004065 semiconductor Substances 0.000 title claims description 233
- 230000017525 heat dissipation Effects 0.000 claims description 28
- 229910052751 metal Inorganic materials 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 6
- 239000010410 layer Substances 0.000 description 25
- 229910000679 solder Inorganic materials 0.000 description 7
- 238000005219 brazing Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000020169 heat generation Effects 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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Description
H型ブリッジ回路(10)を作動する際に、第1のトランジスタ(1)及び第4のトランジスタ(4)と、第2のトランジスタ(2)及び第3のトランジスタ(3)とを交互にオン・オフ動作させて、スイッチング作動させることにより、接続点(A1)と(A2)との間に交互に逆方向の電流を流して、負荷(6)を作動させることができる。このように、第1のトランジスタ(1)から第4のトランジスタ(4)までのスイッチング動作を行ない、直流電圧源を使用し、接続点(A1)と(A2)との間に接続された冷陰極蛍光放電管等を点灯させることができる。
そこで、本発明の目的は、複数の半導体素子を小さい面積に積層し且つ良好な放熱特性で作動できる半導体装置を提供することにある。
第1の半導体素子(1)は、直流電源の第1の端子(正側端子)に電気的に接続される第1の電極(コレクタ電極)と、負荷(6)に電気的に接続される第2の電極(エミッタ電極)とを有する。第2の半導体素子(2)は、第1の半導体素子(1)の第2の電極(エミッタ電極)に電気的に接続される第1の電極(コレクタ電極)と、直流電源の第2の端子(負側端子)に電気的に接続される第2の電極(エミッタ電極)とを有する。第3の半導体素子(3)は、直流電源の第1の端子(正側端子)に電気的に接続される第1の電極(コレクタ電極)と、負荷(6)に電気的に接続される第2の電極(エミッタ電極)とを有する。第4の半導体素子(4)は、第3の半導体素子(3)の第2の電極(エミッタ電極)に電気的に接続される第1の電極(コレクタ電極)と、直流電源の第2の端子(負側端子)に電気的に接続される第2の電極(エミッタ電極)とを有する。第1の半導体素子(1)の第2の電極(エミッタ電極)及び第3の半導体素子(3)の第2の電極(エミッタ電極)は、支持板(5)の第1の側面(図2の下側)付近に配置され、第2の半導体素子(2)の第2の電極(エミッタ電極)及び第4の半導体素子(4)の第2の電極(エミッタ電極)は、支持板(5)の第2の側面(図2の上側)付近に配置される。
第1の半導体素子(1)の第2の電極(エミッタ電極)は、第1の外部リード(接続点A1)を介して負荷(6)に電気的に接続され、第3の半導体素子(3)の第2の電極(エミッタ電極)は、第2の外部リード(接続点A2)を介して負荷(6)に電気的に接続される。第1の外部リード(接続点A1)及び第2の外部リード(接続点A2)は、支持板(5)の第1の側面(図2の下側)に近接して配置される。
第2の半導体素子(2)の第2の電極(エミッタ電極)は、第3の外部リード(負側端子)を介して直流電源の第2の端子(負側端子)に電気的に接続され、第4の半導体素子(4)の第2の電極(エミッタ電極)は、第4の外部リード(負側端子)を介して直流電源の第2の端子(負側端子)に電気的に接続される。第3の外部リード(負側端子)及び第4の外部リード(負側端子)は、支持板(5)の第2の側面(図2の上側)に近接して配置される。
第1の半導体素子(1)、第2の半導体素子(2)、第3の半導体素子(3)及び第4の半導体素子(4)によりH型ブリッジ回路(10)を構成する。
第1の半導体素子(1)の第1の電極(コレクタ電極)は、支持板(5)を介して直流電源の第1の端子(正側端子)に電気的に接続され、第3の半導体素子(3)の第1の電極(コレクタ電極)は、支持板(5)を介して直流電源の第1の端子(正側端子)に電気的に接続される。
本発明の第1の実施の形態による半導体装置は、放熱性を有する支持板(5)と、支持板(5)上に順次積層されて固着され且つ交互にスイッチング動作される第1の半導体素子(1)及び第2の半導体素子(2)とを備えている。第1の半導体素子(1)と第2の半導体素子(2)とを交互にスイッチング動作させるので、一方がオンのとき他方がオフとなり、第1の半導体素子(1)と第2の半導体素子(2)の発生熱量を抑制することができる。
<1> ハイサイド側の第1のトランジスタ(1)と第3のトランジスタ(3)との上に、ローサイド側の第2のトランジスタ(2)と第4のトランジスタ(4)が固着されて第1及び第2の半導体素子積層体(7,8)が構成され、第1の半導体素子積層体(7)と第2の半導体素子積層体(8)の間に設けられる制御回路(13)とが単一の支持板(5)上に固着される。
<2> 第1のトランジスタ(1)と第2のトランジスタ(2)との間及び第3のトランジスタ(3)及び第4のトランジスタ(4)との間に金属製の第1及び第2の放熱層(11,12)が固着される。
<3> 第1のトランジスタ(1)及び第4のトランジスタ(4)と、第2のトランジスタ(2)及び第3のトランジスタ(3)とが交互にスイッチング動作される。
<4> 第1のトランジスタ(1)と第2のトランジスタ(2)との間及び第3のトランジスタ(3)と第4のトランジスタ(4)との間は、金属製の第1及び第2の放熱層(11,12)を介して電気的に接続される。
[1] 第1のトランジスタ(1)の上に第2のトランジスタ(2)を固着し又は第3のトランジスタ(3)の上に第4のトランジスタ(4)を固着することにより、支持板(5)の占有面積を減少しつつ集積度を向上することができると共に、第1のトランジスタ(1)と第2のトランジスタ(2)又は第3のトランジスタ(3)と第4のトランジスタ(4)とを交互にスイッチング動作させるので、第1のトランジスタ(1)から第4のトランジスタ(4)までの各々から発生する熱を十分に放出して、第1の半導体素子積層体(7)又は第2の半導体素子積層体(8)の過度の温度上昇を防止することができる。
[2] 第1のトランジスタ(1)及び第4のトランジスタ(4)並びに第2のトランジスタ(2)及び第3のトランジスタ(3)のスイッチング素子(6)を交互にスイッチング動作させることにより、直流電源に接続されたH型ブリッジ回路(10)の負荷(6)を交流電流で駆動することができる。
[3] 大電流が流れる第1のトランジスタ(1)及び第2のトランジスタ(2)から多量の発熱が生じても、第1のトランジスタ(1)と第2のトランジスタ(2)との間に固着された第1の放熱層(11)を通じて十分な量の熱を放出できるので、第1のトランジスタ(1)と第2のトランジスタ(2)の電気的特性は劣化しない。
[4] 単一の支持板(5)上に第1のパワー半導体素子積層体(7)と第2のパワー半導体素子積層体(8)とを固着しても、第1のトランジスタ(1)と第2のトランジスタ(2)との間に固着される第1の放熱層(11)及び第3のトランジスタ(3)と第4のトランジスタ(4)との間に固着される第2の放熱層(12)を通じて十分な量の熱を放出できるので、第1のトランジスタ(1)から第4のトランジスタ(4)までの電気的特性は劣化しない。
[5] 第1のトランジスタ(1)と第2のトランジスタ(2)及び第3のトランジスタ(3)と第4のトランジスタ(4)とを第1及び第2の放熱層(11,12)を介して電気的に互いに接続するので、別途ワイヤボンディング等を行なう必要がなく、第1のパワー半導体素子積層体(7)と第2のパワー半導体素子積層体(8)とに流れる電流の結線経路を短縮して、ワイヤ結線等を簡素化し、電流の結線経路の延長によるノイズ発生及び電力損失を抑制することができる。
Claims (5)
- 第1の側面及び該第1の側面と対向する第2の側面を備え且つ放熱性を有する金属製の支持板と、該支持板上に順次積層されて固着された第1の半導体素子及び第2の半導体素子を有する第1の半導体素子積層体と、前記支持板上に順次積層されて固着された第3の半導体素子及び第4の半導体素子を有する第2の半導体素子積層体と、前記第1の半導体素子、第2の半導体素子、第3の半導体素子及び第4の半導体素子を制御する制御回路とを備え、
前記第1の半導体素子積層体及び前記第2の半導体素子積層体は、前記支持板の第1の側面及び第2の側面に沿って互いに離間して前記支持板上に配置され、
前記制御回路は、前記第1の半導体素子積層体と前記第2の半導体素子積層体との間に配置され、
前記第1の半導体素子は、直流電源の第1の端子に電気的に接続される第1の電極と、負荷に電気的に接続される第2の電極とを有し、
前記第2の半導体素子は、前記第1の半導体素子の第2の電極に電気的に接続される第1の電極と、前記直流電源の第2の端子に電気的に接続される第2の電極とを有し、
前記第3の半導体素子は、前記直流電源の第1の端子に電気的に接続される第1の電極と、前記負荷に電気的に接続される第2の電極とを有し、
前記第4の半導体素子は、前記第3の半導体素子の第2の電極に電気的に接続される第1の電極と、前記直流電源の第2の端子に電気的に接続される第2の電極とを有し、
前記第1の半導体素子の第2の電極及び前記第3の半導体素子の第2の電極は、前記支持板の第1の側面付近に配置され、
前記第2の半導体素子の第2の電極及び前記第4の半導体素子の第2の電極は、前記支持板の第2の側面付近に配置されることを特徴とする半導体装置。 - 前記第1の半導体素子の第2の電極は、第1の外部リードを介して前記負荷に電気的に接続され、
前記第3の半導体素子の第2の電極は、第2の外部リードを介して前記負荷に電気的に接続され、
前記第1の外部リード及び前記第2の外部リードは、前記支持板の第1の側面に近接して配置される請求項1に記載の半導体装置。 - 前記第2の半導体素子の第2の電極は、第3の外部リードを介して前記直流電源の第2の端子に電気的に接続され、
前記第4の半導体素子の第2の電極は、第4の外部リードを介して前記直流電源の第2の端子に電気的に接続され、
前記第3の外部リード及び前記第4の外部リードは、前記支持板の第2の側面に近接して配置される請求項1又は2に記載の半導体装置。 - 前記第1の半導体素子、第2の半導体素子、第3の半導体素子及び第4の半導体素子によりH型ブリッジ回路を構成する請求項1〜3の何れか1項に記載の半導体装置。
- 前記第1の半導体素子の第1の電極は、前記支持板を介して前記直流電源の第1の端子に電気的に接続され、
前記第3の半導体素子の第1の電極は、前記支持板を介して前記直流電源の第1の端子に電気的に接続される請求項1〜4の何れか1項に記載の半導体装置。
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JP5481104B2 (ja) | 2009-06-11 | 2014-04-23 | ルネサスエレクトロニクス株式会社 | 半導体装置 |
DE102013008193A1 (de) | 2013-05-14 | 2014-11-20 | Audi Ag | Vorrichtung und elektrische Baugruppe zum Wandeln einer Gleichspannung in eine Wechselspannung |
CN103824832B (zh) * | 2014-03-13 | 2016-08-24 | 杭州明果教育咨询有限公司 | 一种多mosfet集成六桥臂封装模块 |
WO2016094718A1 (en) * | 2014-12-10 | 2016-06-16 | Texas Instruments Incorporated | Power field-effect transistor (fet), pre-driver, controller, and sense resistor integration |
US10204847B2 (en) | 2016-10-06 | 2019-02-12 | Infineon Technologies Americas Corp. | Multi-phase common contact package |
JP6770452B2 (ja) * | 2017-01-27 | 2020-10-14 | ルネサスエレクトロニクス株式会社 | 半導体装置 |
JP7564021B2 (ja) * | 2021-03-08 | 2024-10-08 | 株式会社デンソー | 回路基板内に半導体素子を内蔵する半導体モジュール |
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US6747300B2 (en) * | 2002-03-04 | 2004-06-08 | Ternational Rectifier Corporation | H-bridge drive utilizing a pair of high and low side MOSFETs in a common insulation housing |
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