JP2018532275A - 半導体モジュール - Google Patents
半導体モジュール Download PDFInfo
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- JP2018532275A JP2018532275A JP2018521822A JP2018521822A JP2018532275A JP 2018532275 A JP2018532275 A JP 2018532275A JP 2018521822 A JP2018521822 A JP 2018521822A JP 2018521822 A JP2018521822 A JP 2018521822A JP 2018532275 A JP2018532275 A JP 2018532275A
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- semiconductor switch
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- 239000004065 semiconductor Substances 0.000 title claims abstract description 250
- 239000004020 conductor Substances 0.000 claims abstract description 192
- 239000000758 substrate Substances 0.000 claims abstract description 35
- 230000008878 coupling Effects 0.000 description 13
- 238000010168 coupling process Methods 0.000 description 13
- 238000005859 coupling reaction Methods 0.000 description 13
- 239000002184 metal Substances 0.000 description 10
- 230000001939 inductive effect Effects 0.000 description 5
- 230000001419 dependent effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
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Abstract
Description
本発明は、いくつかの半導体チップをモジュールにパッケージ化する分野に関する。特に、本発明は半導体モジュールに関する。
IGBTパワー半導体モジュールにおいては、典型的には、いくつかのIGBTチップおよび還流ダイオードチップが所望のモジュール定格電流に達するように並列に接続されている。IGBTをスイッチングするためのゲート信号は、半導体モジュールの外側ゲート端子から各々のIGBTチップに供給される。このゲート電流経路においては、IGBTがオンにされている間、信号が歪む可能性がある。この歪みにより、いくつかのIGBTのスイッチングが他のIGBTと比べてより遅くなってしまう可能性がある。このような電流の不均衡は所望されない可能性があり、特に半導体モジュールの短絡安全動作領域を縮小してしまう可能性もある。
チップを対称的に配置すると、結果として、半導体モジュール内の温度分布が不良になる可能性がある。半導体スイッチチップおよびダイオードチップはともにすべてが、基板プレート上の特定の領域に集中して設けられている。
本発明の主題は、添付の図面に示される例示的な実施形態に関連付けて以下の文面においてより詳細に説明されるだろう。
図1はパワー半導体モジュール10を上から見た図である。パワー半導体モジュール10は、ほぼ等しく設計された2つの二等分された半体12a、12bを有する。等しく設計された部分は、互いに対して約180°回転させると実質的に回転対称となり得る。
第1の半体12aのコレクタ導体16は半導体モジュール10のAC接続36をもたらす。AC接続36は、DC+接続30aおよびDC−接続30bの反対側に設けられている。
L1=1nH,L2=2nH,L3=10nH,M=4nH
図4は、半導体モジュール10のさらなる実施形態を示す。図2の設計は、図1の設計とほぼ等しい。しかしながら、ゲート導体20、エミッタ導体18、突出領域44およびブリッジング領域48は異なっている。
10 半導体モジュール
12a 半導体モジュールの第1の半体
12b 半導体モジュールの第2の半体
14 基板プレート
16 コレクタ導体
18 エミッタ導体
20 ゲート導体
22a 第1の半導体スイッチチップ
22b 第2の半導体スイッチチップ
24a 第1のダイオードチップ
24b 第2のダイオードチップ
26a 第1のエミッタ電極
26b 第2のエミッタ電極
28 ボンドワイヤ
30a DC+接続
30b DC−接続
32 DC−導体
34 DC+ブリッジング導体
36 AC接続
38a ロー側ゲート接続
38b ハイ側ゲート接続
39a ロー側エミッタ接続
39b ハイ側エミッタ接続
40a 第1のゲート電極
40b 第2のゲート電極
42a 第1の列
42b 第2の列
44 突出領域
46 突出領域の先端
48 ブリッジング導体
50a 第1のエミッタ電流経路
50b 第2のエミッタ電流経路
52 付加的なエミッタ電流経路
54a 第1のゲート電流経路
54b 第2のゲート電流経路
C コレクタ接続点
G ゲート接続点
E エミッタ接続点
X 予備のエミッタ接続点
G1,G2 ゲート
E1,E2 エミッタ
L1 第1のエミッタ電流経路のインダクタンス
L2 第2のエミッタ電流経路のインダクタンス
L3 付加的なエミッタ電流経路のインダクタンス
L4 第1のゲート電流経路のインダクタンス
22c 第3の半導体スイッチチップ
24c 第3のダイオードチップ
42c 第3の列
Claims (14)
- 半導体モジュール(10)であって、
基板プレート(14)と、
前記基板プレート(14)上のコレクタ導体(16)に取付けられた半導体スイッチチップ(22a)およびダイオードチップ(24a)とを含み、前記ダイオードチップ(24a)は前記半導体スイッチチップ(22a)に反平列に電気的に接続されており、
前記半導体スイッチチップ(22a)は、ボンドワイヤ(28)を介して前記基板プレート(14)上のエミッタ導体(18)に電気的に接続されて、第1のエミッタ電流経路(50a)をもたらし、前記エミッタ導体(18)は、前記ダイオードチップ(24a)に対して前記半導体スイッチチップ(22a)の反対側に配置されており、
前記半導体スイッチチップ(22a)のゲート電極(40a)は、ボンドワイヤ(28)を介して前記基板プレート(14)上のゲート導体(20)に電気的に接続されて、ゲート電流経路(54a)をもたらし、前記ゲート導体(20)は、前記ダイオードチップ(24a)に対して前記半導体スイッチチップ(22a)の反対側に配置されており、
前記エミッタ導体(18)の突出領域(44)は前記ダイオードチップ(24a)の傍において前記第1の半導体スイッチチップ(22a)に向かって延びており、前記第1の半導体スイッチチップ(22a)は、ボンドワイヤ(28)を介して前記突出領域(44)と直接接続されて、前記ゲート電流経路(54a)に沿って少なくとも部分的に延びる付加的なエミッタ電流経路(52)をもたらし、
前記半導体スイッチチップ(22a)は第1の半導体スイッチチップであり、前記ダイオードチップ(24a)は第1のダイオードチップであり、第1の列(42a)に配置されており、
前記半導体モジュール(10)はさらに、前記コレクタ導体(16)に取付けられた第2の半導体スイッチチップ(22b)と第2のダイオードチップ(24a,24b)との第2の列(42b)を含み、各々の列の前記ダイオードチップ(24a,24b)は、同じ列の前記半導体スイッチチップ(22a,22b)に反平列に電気的に接続されており、前記第1の列および前記第2の列(42a,42b)は、並列に電気的に接続されており、
前記第1の半導体スイッチチップ(22a)は前記第2のダイオードチップ(24b)の傍に配置され、前記第2の半導体チップ(22b)は前記第1のダイオードチップ(24a)の傍に配置されており、
前記第1の半導体スイッチチップおよび前記第2の半導体スイッチチップ(22a,22b)は、ボンドワイヤ(28)を介して前記基板プレート(14)上の前記エミッタ導体(18)に電気的に接続されており、
前記エミッタ導体(18)は、前記半導体モジュール(10)のうちの前記第1のダイオードチップ(24a)および前記第2の半導体スイッチチップ(22b)の傍に配置されており、
前記第1の半導体スイッチチップおよび前記第2の半導体スイッチチップ(22a,22b)のゲート電極(40a,40b)は前記ゲート導体(20)に電気的に接続されており、前記ゲート導体(20)は、前記第1の半導体スイッチチップ(22a)の前記ゲート電極(40a)と前記ゲート導体(20)との間の前記第1のゲート電流経路(54a)が前記第2の半導体スイッチチップ(22b)の前記ゲート電極(40b)と前記ゲート導体(20)との間の第2のゲート電流経路(54b)よりも長くなるように、前記半導体モジュール(10)のうち前記エミッタ導体(18)が配置されている側に配置されている、半導体モジュール(10)。 - 前記付加的なエミッタ電流経路(52)および前記ゲート電流経路(54a)は、前記半導体スイッチチップ(22a)のゲート・エミッタ電圧が前記付加的なエミッタ電流経路(52)における電流によって昇圧されることで、誘導結合されるように配置されている、請求項1に記載の半導体モジュール(10)。
- 前記半導体スイッチチップ(22a)はボンドワイヤ(28)を介して前記ダイオードチップ(24a)と接続されており、前記ダイオードチップ(24a)はボンドワイヤ(28)を介して前記エミッタ導体(18)と接続されている、請求項1または2に記載の半導体モジュール(10)。
- 前記半導体スイッチチップ(22a)の前記ゲート電極(40a)はボンドワイヤ(28)を介して前記基板プレート(14)上のブリッジング導体(48)と接続されており、前記ブリッジング導体(48)は、前記エミッタ導体(18)の前記突出領域(44)によって少なくとも部分的に囲まれており、ボンドワイヤ(28)を介して前記ゲート導体(20)と接続されている、請求項1から3のいずれか1項に記載の半導体モジュール(10)。
- 前記ブリッジング導体(48)が前記ダイオードチップ(24a)と前記エミッタ導体(18)の前記突出領域(44)との間に配置されているか、または、
前記エミッタ導体(18)の前記突出領域(44)が前記ブリッジング導体(48)を完全に囲んでいる、請求項3に記載の半導体モジュール(10)。 - 前記半導体スイッチチップ(22a)の前記ゲート電極(40a)は、前記半導体スイッチチップ(22a)のゲート電極側に設けられており、前記半導体スイッチチップ(22a)は、そのゲート電極側が前記ダイオードチップ(24a)の方に向くように位置決めされる、請求項1から5のいずれか1項に記載の半導体モジュール(10)。
- 前記エミッタ導体(18)の前記突出領域(44)が前記ダイオードチップ(24a)の傍にだけ延びているか、または、
前記エミッタ導体(18)の前記突出領域(44)もまた前記半導体スイッチチップ(22a)の傍に延びている、請求項1から6のいずれか1項に記載の半導体モジュール(10)。 - 前記ゲート導体(20)は前記エミッタ導体(18)によって囲まれている、請求項1から7のいずれか1項に記載の半導体モジュール(10)。
- 前記半導体スイッチチップ(22a,22b)はIGBTまたはMOSFETである、請求項1から8のいずれか1項に記載の半導体モジュール(10)。
- 前記第2のダイオードチップ(24b)はボンドワイヤ(28)を介して前記第2の半導体スイッチチップ(22b)と接続されており、前記第2の半導体スイッチチップ(22a)はボンドワイヤ(28)を介して前記エミッタ導体(18)と接続されている、請求項1から9のいずれか1項に記載の半導体モジュール(10)。
- 前記第2の半導体スイッチチップ(22b)のゲート電極(40b)は、ボンドワイヤ(28)を介して前記ゲート導体(20)に直接接続されている、請求項1から10のいずれか1項に記載の半導体モジュール(10)。
- 前記付加的なエミッタ電流経路(52)および前記第1のゲート電流経路(54a)は、前記第1の半導体スイッチチップ(22a)の前記ゲート・エミッタ電圧が前記第2の半導体スイッチチップ(22b)のゲート・エミッタ電圧と等しくなることで、誘導結合されるように配置されている、請求項1から11のいずれか1項に記載の半導体モジュール(10)。
- 並列に接続された、半導体スイッチチップとダイオードチップとの少なくとも3つの列(42a,42b,42c)をさらに含み、
第3の列(42c)は前記第2の列(42b)の傍に配置されており、前記第2の列(42b)および前記第3の列(42c)の前記半導体スイッチチップ(22b,22c)および前記ダイオードチップ(24b,24c)は並んで配置される、請求項1から12のいずれか1項に記載の半導体モジュール(10)。 - 並列の半導体スイッチ(22a,22b)を備える二等分された半体(12a,12b)を含み、
各々の半体(12a,12b)は、半導体スイッチチップ(22a,22b)とダイオードチップ(24a,24b)との少なくとも2つの列(42a,42b)を含み、
前記半導体モジュール(10)の前記半体(12a,12b)はハーフブリッジを形成するように相互接続されている、請求項1から13のいずれか1項に記載の半導体モジュール(10)。
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