JP2018200918A - パワーモジュール - Google Patents
パワーモジュール Download PDFInfo
- Publication number
- JP2018200918A JP2018200918A JP2017103585A JP2017103585A JP2018200918A JP 2018200918 A JP2018200918 A JP 2018200918A JP 2017103585 A JP2017103585 A JP 2017103585A JP 2017103585 A JP2017103585 A JP 2017103585A JP 2018200918 A JP2018200918 A JP 2018200918A
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- JP
- Japan
- Prior art keywords
- chip component
- power module
- spacers
- circuit patterns
- chip
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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- 229910000679 solder Inorganic materials 0.000 claims abstract description 59
- 125000006850 spacer group Chemical group 0.000 claims abstract description 56
- 239000004065 semiconductor Substances 0.000 claims abstract description 35
- 239000000463 material Substances 0.000 claims description 20
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 230000002040 relaxant effect Effects 0.000 abstract 1
- 239000003990 capacitor Substances 0.000 description 8
- 230000008646 thermal stress Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 5
- 230000035882 stress Effects 0.000 description 5
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 239000000758 substrate Substances 0.000 description 4
- 229910010293 ceramic material Inorganic materials 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 239000006071 cream Substances 0.000 description 2
- 238000005304 joining Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- JMASRVWKEDWRBT-UHFFFAOYSA-N Gallium nitride Chemical compound [Ga]#N JMASRVWKEDWRBT-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000005219 brazing Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Abstract
【解決手段】電力用半導体装置と、電力用半導体装置と電気的に接続された第1および第2の回路パターン上に、該第1および第2の回路パターンを跨ぐように配置されたチップ部品と、を備え、チップ部品は、第1および第2の回路パターン上に、それぞれ第1および第2の電極が位置するように配置され、第1および第2の電極と、第1および第2の回路パターンとが、それぞれハンダ層によって接合され、チップ部品の下面と第1および第2の回路パターンとの間に、それぞれ第1および第2の電極寄りの位置に2つのスペーサが互いに平行して設けられ、ハンダ層は、平行する前記2つのスペーサの内側には設けられていない。
【選択図】図2
Description
図1は本発明に係る実施の形態のパワーモジュール100の構成を示す平面図である。図1に示すようにパワーモジュール100は、電力用半導体装置20と、電力用半導体装置20の主電極と電気的に接続された回路パターンCT1およびCT2上に、当該回路パターンCT1およびCT2を跨ぐように配置されたチップ部品10とを備えている。
以上説明したパワーモジュール100においては、スペーサ13としてAlのワイヤ線を使用する例について示したが、これに限定されるものではない。例えば、図3に示されるように、断面形状が三角形のスペーサ131を用いても良い。また、図4に示されるように、断面形状が四角形のスペーサ132を用いても良い。また、図5に示されるように、断面形状が楕円形のスペーサ133を用いても良い。
図1に示したパワーモジュール100においては、回路パターンCT1およびCT2上に1つのチップ部品10を実装した例を示したが、実装されるチップ部品10は1つに限定されるものではなく、本発明は2つ以上のチップ部品10を実装する場合にも有効である。
炭化珪素(SiC)半導体、窒化ガリウム(GaN)など、シリコン(Si)半導体より広いワイドバンドギャップを有するワイドギャップ半導体を用いたワイドギャップ半導体装置は、Si半導体を用いたSi半導体装置と比較して、耐圧性に優れ、許容電流密度も高く、また耐熱性も高いため高温動作も可能である。
Claims (7)
- 電力用半導体装置と、
前記電力用半導体装置と電気的に接続された第1および第2の回路パターン上に、該第1および第2の回路パターンを跨ぐように配置されたチップ部品と、を備え、
前記チップ部品は、
前記第1および第2の回路パターン上に、それぞれ第1および第2の電極が位置するように配置され、前記第1および第2の電極と、前記第1および第2の回路パターンとが、それぞれハンダ層によって接合され、
前記チップ部品の下面と前記第1および第2の回路パターンとの間に、それぞれ前記第1および第2の電極寄りの位置に2つのスペーサが互いに平行して設けられ、
前記ハンダ層は、平行する前記2つのスペーサの内側には設けられていない、パワーモジュール。 - 前記2つのスペーサは、
平面視で前記チップ部品の側面より外側にはみ出すように設けられている、請求項1記載のパワーモジュール。 - 前記チップ部品は、
前記第1および第2の回路パターンをそれぞれ跨ぐように配置され、互いに平行するように配列された複数のチップ部品を有し、
前記2つのスペーサは、それぞれ前記複数のチップ部品を搭載する長さを有すると共に、平面視で、前記複数のチップ部品の配列の側面より外側にはみ出すように設けられている、請求項1記載のパワーモジュール。 - 前記2つのスペーサはワイヤ線で構成され、ワイヤボンディングにより前記第1および第2の回路パターンに接合される、請求項2または請求項3記載のパワーモジュール。
- 前記2つのスペーサの断面形状は円形である、請求項1記載のパワーモジュール。
- 前記2つのスペーサは、
前記ハンダ層を構成するハンダ材との濡れ性が比較的低い金属で構成される、請求項1記載のパワーモジュール。 - 前記電力用半導体装置は、
ワイドギャップ半導体装置で構成される、請求項1記載のパワーモジュール。
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