JP6580545B2 - 半導体スイッチングデバイスおよびクランプダイオードを含む電気組立体 - Google Patents
半導体スイッチングデバイスおよびクランプダイオードを含む電気組立体 Download PDFInfo
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- JP6580545B2 JP6580545B2 JP2016207173A JP2016207173A JP6580545B2 JP 6580545 B2 JP6580545 B2 JP 6580545B2 JP 2016207173 A JP2016207173 A JP 2016207173A JP 2016207173 A JP2016207173 A JP 2016207173A JP 6580545 B2 JP6580545 B2 JP 6580545B2
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- clamp diode
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- switching device
- electrical assembly
- voltage
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- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 61
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 61
- 239000002184 metal Substances 0.000 claims description 37
- 229910052751 metal Inorganic materials 0.000 claims description 37
- 230000005684 electric field Effects 0.000 claims description 24
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 19
- 229910052710 silicon Inorganic materials 0.000 claims description 19
- 239000010703 silicon Substances 0.000 claims description 19
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- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
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Description
101 第1の表面
102 第2の表面
103 外面
115 空乏領域
121 ドリフト領域
128 フィールドストップ層
129 カソード領域
130 電界形成構造体
132 アノード領域
134 プラグ
135 絶縁体層
137チャネル接点領域
138 チャネル
139 ピニング領域
210 層間絶縁膜
310 金属アノード
311 ショットキーバリア層
312 コンタクト層
320 金属カソード
401 電圧曲線
402 電流曲線
411 基準電圧曲線
412 基準電流曲線
421 VCE電圧曲線
422 IL電流曲線
423 VG電圧曲線
424 EAR曲線
431 V特性
432 V特性
433 V特性
451 順方向特性
452 順方向特性
500 電気組立体
510 半導体スイッチングデバイス
511a 逆導通ダイオード
512a 内部ボディダイオード
519a フリーホイーリングダイオード
519b フリーホイーリングダイオード
519c フリーホイーリングダイオード
519x シリコンpinダイオード
519y 炭化ケイ素ショットキーダイオード
560 クランプダイオード
561 MPSダイオード
562 TMBSダイオード
563 TOPSダイオード
564 IDEEダイオード
565 SiC pinダイオード
580 帰還回路
581 制御要素
582 帰還経路
585 帰還インピーダンス
586 接合配線
587 ループ
590 第1の導体構造体
591 第2の導体構造体
599 支持体基板
600 電子組立体
610 中心領域
690 終端領域
700 IGBTモジュール
710 制御回路
720 ゲートドライバ
Claims (25)
- オフ状態における2つの負荷端子(L1、L2)間の最大定格降伏電圧に耐えるように構成された半導体スイッチングデバイス(510)と、
前記2つの負荷端子(L1、L2)に、かつ前記スイッチングデバイス(510)と並列に電気接続されたクランプダイオード(560)であって、前記クランプダイオード(560)の半導体本体(100)は炭化ケイ素製であり、および前記クランプダイオード(560)のアバランシェ電圧は前記スイッチングデバイス(510)の前記最大定格降伏電圧よりも低い、クランプダイオード(560)と
を備え、
前記クランプダイオード(560)は、金属アノード(310)および金属カソード(320)の両方が前記半導体本体(100)に直接隣接する中心領域(610)、ならびに前記中心領域(610)を包囲する終端領域(690)を備え、前記中心領域(610)内の降伏電圧は前記終端領域(690)内の降伏電圧よりも低く、
前記クランプダイオード(560)は少なくとも650V以上の阻止電圧を有するSiCダイオードである、電気組立体。 - 前記クランプダイオード(560)は、前記スイッチングデバイス(510)の最大定格長期負荷電流の少なくとも400%を少なくとも10nsにわたり耐えるように構成されている、請求項1に記載の電気組立体。
- 前記クランプダイオード(560)は、金属アノード(310)と金属カソード(320)との間で有効なpn接合(pn0)を備える、請求項1または2に記載の電気組立体。
- 前記クランプダイオード(560)は、前記クランプダイオード(560)の阻止モードにおいて、電界強度が、前記半導体本体(100)と前記クランプダイオード(560)の金属アノード(310)との間の金属−半導体界面まで距離をおいて最大値を有するように構成された電界形成構造体(130)を備える、請求項1〜3のいずれか一項に記載の電気組立体。
- 前記クランプダイオード(560)は、前記半導体本体(100)と前記金属アノード(310)との間で有効なショットキー接点(SC)を備える、請求項4に記載の電気組立体。
- 前記クランプダイオード(560)は、合併pinショットキー(MPS)ダイオード(561)である、請求項1〜5のいずれか一項に記載の電気組立体。
- 前記クランプダイオード(560)は、トレンチMOSバリアショットキーダイオード(562)である、請求項1〜5のいずれか一項に記載の電気組立体。
- 前記クランプダイオード(560)は、トレンチ酸化物pinショットキー(TOPS)ダイオード(563)である、請求項1〜5のいずれか一項に記載の電気組立体。
- 前記クランプダイオード(560)は、エミッタ効率−逆注入依存性(IDEE)ダイオード(564)である、請求項1〜5のいずれか一項に記載の電気組立体。
- 前記クランプダイオード(560)は、SiC pinダイオード(565)である、請求項1〜5のいずれか一項に記載の電気組立体。
- 前記2つの負荷端子(L1、L2)の間に、前記スイッチングデバイス(510)および前記クランプダイオード(560)と並列に接続されたフリーホイーリングダイオード(519)であって、前記クランプダイオード(560)のアバランシェ電圧は前記フリーホイーリングダイオードの降伏電圧よりも低い、フリーホイーリングダイオード(519)をさらに備える、請求項1〜9のいずれか一項に記載の電気組立体。
- 前記フリーホイーリングダイオード(519)は、シリコンpnダイオード(519x)を含む、請求項11に記載の電気組立体。
- 前記フリーホイーリングダイオード(519)は、炭化ケイ素ショットキーダイオード(519y)を含む、請求項11または12に記載の電気組立体。
- 前記スイッチングデバイス(510)と電気的に並列に配置された少なくとも1つのさらなる半導体スイッチングデバイスをさらに備える、請求項1〜13のいずれか一項に記載の電気組立体。
- 前記スイッチングデバイス(510)は、シリコン絶縁ゲートバイポーラトランジスタ(Si−IGBT)(511)を備える、請求項1〜14のいずれか一項に記載の電気組立体。
- 前記クランプダイオード(560)のアノード電極(A)を前記スイッチングデバイス(510)のゲート電極(G)と電気接続する帰還回路(580)であって、前記クランプダイオード(560)を通した電流の増大とともに前記ゲート電極(G)におけるゲート電圧を増大させるように構成されている、帰還回路(580)をさらに備える、請求項1〜15のいずれか一項に記載の電気組立体。
- 前記クランプダイオード(560)の前記アノード電極(A)と前記2つの負荷端子(L1、L2)のうちの第2の負荷端子(L2)との間に電気接続された帰還インピーダンス(585)をさらに備え、
前記帰還回路(580)は、前記クランプダイオード(560)の前記アノード電極(A)を、前記スイッチングデバイス(510)の前記ゲート電極(G)に電気接続された制御要素(581)と電気接続する帰還経路(582)を備え、前記制御要素(581)は、前記クランプダイオード(560)を通した電流の増大とともに前記ゲート電極(G)におけるゲート電圧を増大させるように構成されている、請求項16に記載の電気組立体。 - 前記制御要素(581)は、電圧制御可能な電圧、電流源、およびゲートドライバ回路を含む群から選択される、請求項17に記載の電気組立体。
- 前記クランプダイオード(560)の前記アバランシェ電圧は、全公称温度範囲について、および前記スイッチングデバイス(510)の最大定格電流について、前記スイッチングデバイス(510)の前記最大定格降伏電圧よりも低い、請求項1〜18のいずれか一項に記載の電気組立体。
- 前記クランプダイオード(560)の前記アバランシェ電圧は、少なくとも300Vである、請求項1〜19のいずれか一項に記載の電気組立体。
- 第1の電気組立体(500)を備えるローサイドスイッチと、第2の電気組立体(500)を備えるハイサイドスイッチとを備える、電子組立体であって、前記ローサイドスイッチおよび前記ハイサイドスイッチは電気的に半ブリッジ構成で配置され、および前記電気組立体(500)のうちの少なくとも一方は、
オフ状態における2つの負荷端子(L1、L2)間の最大定格降伏電圧に耐えるように構成された半導体スイッチングデバイス(510)と、
前記2つの負荷端子(L1、L2)に、かつ前記スイッチングデバイス(510)と並列に電気接続されたクランプダイオード(560)であって、前記クランプダイオード(560)の半導体本体(100)は炭化ケイ素製であり、および前記クランプダイオード(560)のアバランシェ電圧は前記スイッチングデバイス(510)の公称温度範囲について前記スイッチングデバイス(510)の前記最大定格降伏電圧よりも低い、クランプダイオード(560)と
を備え、
前記クランプダイオード(560)は、金属アノード(310)および金属カソード(320)の両方が前記半導体本体(100)に直接隣接する中心領域(610)、ならびに前記中心領域(610)を包囲する終端領域(690)を備え、前記中心領域(610)内の降伏電圧は前記終端領域(690)内の降伏電圧よりも低く、
前記クランプダイオード(560)は少なくとも650V以上の阻止電圧を有するSiCダイオードである、電子組立体。 - 第1の電気組立体(500)を備えるローサイドスイッチと、第2の電気組立体(500)を備えるハイサイドスイッチとを備える半ブリッジ回路を備える絶縁ゲートバイポーラトランジスタモジュールであって、前記電気組立体(500)のうちの少なくとも一方は、
オフ状態における2つの負荷端子(L1、L2)間の最大定格降伏電圧に耐えるように構成された半導体スイッチングデバイス(510)と、
前記2つの負荷端子(L1、L2)に、かつ前記スイッチングデバイス(510)と並列に電気接続されたクランプダイオード(560)であって、前記クランプダイオード(560)の半導体本体(100)は炭化ケイ素製であり、および前記クランプダイオード(560)のアバランシェ電圧は前記スイッチングデバイス(510)の公称温度範囲について前記スイッチングデバイス(510)の前記最大定格降伏電圧よりも低い、クランプダイオード(560)と
を備え、
前記クランプダイオード(560)は、金属アノード(310)および金属カソード(320)の両方が前記半導体本体(100)に直接隣接する中心領域(610)、ならびに前記中心領域(610)を包囲する終端領域(690)を備え、前記中心領域(610)内の降伏電圧は前記終端領域(690)内の降伏電圧よりも低く、
前記クランプダイオード(560)は少なくとも650V以上の阻止電圧を有するSiCダイオードである、絶縁ゲートバイポーラトランジスタモジュール。 - 前記電気組立体(500)のゲート端子に電気接続されたゲートドライバ(720)をさらに備える、請求項22に記載の絶縁ゲートバイポーラトランジスタモジュール。
- オフ状態における2つの負荷端子(L1、L2)間の最大定格降伏電圧に耐えるように構成された半導体スイッチングデバイス(510)と、
前記2つの負荷端子(L1、L2)に、かつ前記スイッチングデバイス(510)と並列に電気接続されたクランプダイオード(560)であって、前記クランプダイオード(560)のアバランシェ電圧は前記スイッチングデバイス(510)の前記最大定格降伏電圧よりも低く、前記クランプダイオード(560)は、金属アノード(310)および金属カソード(320)の両方が半導体本体(100)に直接隣接する中心領域(610)、ならびに前記中心領域(610)を包囲する終端領域(690)を備え、前記中心領域(610)内の降伏電圧は前記終端領域(690)内の降伏電圧よりも低く、
少なくとも650V以上の阻止電圧を有するSiCダイオードである、クランプダイオード(560)と、
前記クランプダイオード(560)のアノード電極(A)を前記スイッチングデバイス(510)のゲート電極(G)と電気接続する帰還回路(580)であって、前記クランプダイオード(560)を通した電流の増大とともに前記ゲート電極(G)におけるゲート電圧を増大または低下させるように構成されている、帰還回路(580)と
を備える、電気組立体。 - 前記クランプダイオード(560)の半導体本体(100)が炭化ケイ素製である、請求項24に記載の電気組立体。
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