JP5551240B2 - 制御可能なサージ電流耐性を有するパワースイッチング素子 - Google Patents
制御可能なサージ電流耐性を有するパワースイッチング素子 Download PDFInfo
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- JP5551240B2 JP5551240B2 JP2012513973A JP2012513973A JP5551240B2 JP 5551240 B2 JP5551240 B2 JP 5551240B2 JP 2012513973 A JP2012513973 A JP 2012513973A JP 2012513973 A JP2012513973 A JP 2012513973A JP 5551240 B2 JP5551240 B2 JP 5551240B2
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- 229910010271 silicon carbide Inorganic materials 0.000 claims description 109
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 104
- 239000004065 semiconductor Substances 0.000 claims description 69
- 230000005669 field effect Effects 0.000 claims description 5
- 238000002654 craniosacral therapy Methods 0.000 description 97
- 108091006146 Channels Proteins 0.000 description 30
- 239000000758 substrate Substances 0.000 description 20
- 239000008186 active pharmaceutical agent Substances 0.000 description 14
- 238000004519 manufacturing process Methods 0.000 description 8
- 239000000969 carrier Substances 0.000 description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 6
- 230000007547 defect Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 238000002347 injection Methods 0.000 description 5
- 239000007924 injection Substances 0.000 description 5
- 230000004044 response Effects 0.000 description 5
- 230000000903 blocking effect Effects 0.000 description 4
- 239000002800 charge carrier Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- 230000003321 amplification Effects 0.000 description 3
- 230000006378 damage Effects 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000003199 nucleic acid amplification method Methods 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- 235000012239 silicon dioxide Nutrition 0.000 description 3
- 239000000377 silicon dioxide Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 239000002019 doping agent Substances 0.000 description 2
- 238000002513 implantation Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 2
- 229920005591 polysilicon Polymers 0.000 description 2
- 230000006798 recombination Effects 0.000 description 2
- 238000005215 recombination Methods 0.000 description 2
- 230000003685 thermal hair damage Effects 0.000 description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- 229910002601 GaN Inorganic materials 0.000 description 1
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 description 1
- JMASRVWKEDWRBT-UHFFFAOYSA-N Gallium nitride Chemical compound [Ga]#N JMASRVWKEDWRBT-UHFFFAOYSA-N 0.000 description 1
- 108010075750 P-Type Calcium Channels Proteins 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- BUGBHKTXTAQXES-UHFFFAOYSA-N Selenium Chemical compound [Se] BUGBHKTXTAQXES-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 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
- 229910052796 boron Inorganic materials 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 229910052733 gallium Inorganic materials 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 229910052711 selenium Inorganic materials 0.000 description 1
- 239000011669 selenium Substances 0.000 description 1
- 238000010408 sweeping Methods 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
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Description
本出願は、2009年6月2日に出願された米国仮特許出願第61/183,214号に基づいて、米国特許法第119条(e)による優先権を主張するものであり、その全体が引用により本明細書に組み入れられる。
Claims (10)
- ワイドバンドギャップパワートランジスタと、
前記ワイドバンドギャップパワートランジスタと並列に接続されるワイドバンドギャップサージ電流バイポーラ接合トランジスタ(BJT)と、
前記ワイドバンドギャップサージ電流BJTを駆動するように構成されるワイドバンドギャップ駆動電界効果トランジスタと
を含む半導体スイッチング素子であって、
前記半導体スイッチング素子は、オン状態で、ワイドバンドギャップパワートランジスタのドレイン−ソース電圧が第一の電圧範囲内にあるときに、当該半導体スイッチング素子のすべての出力電流が、前記ワイドバンドギャップパワートランジスタのチャネルを通って流れるように構成され、
さらに、前記半導体スイッチング素子は、オン状態で、前記ワイドバンドギャップパワートランジスタの前記ドレイン−ソース電圧が、前記第一の電圧範囲における電圧よりも高い電圧を有する第二の電圧範囲内にあるときに、前記出力電流は、前記ワイドバンドギャップサージ電流BJT、および、前記ワイドバンドギャップパワートランジスタのチャネルの両方を流れるように構成されること
を特徴とする半導体スイッチング素子。 - 前記ワイドバンドギャップパワートランジスタは、ワイドバンドギャップパワーMOSFETと含み、
前記ワイドバンドギャップ駆動電界効果トランジスタは、前記ワイドバンドギャップサージ電流BJTにベース電流を供給するように構成されるワイドバンドギャップ駆動MOSFETを含むこと
を特徴とする請求項1に記載の半導体スイッチング素子。 - 前記半導体スイッチング素子は、当該半導体スイッチング素子を通って流れるサージ電流を飽和させるように構成されること
を特徴とする請求項2に記載の半導体スイッチング素子。 - 飽和レベルは、前記ワイドバンドギャップパワーMOSFETのドレイン−ソース電圧と、前記ワイドバンドギャップパワーMOSFETのゲートとワイドバンドギャップ駆動MOSFETのゲートに印加されるバイアス電圧との関数であること
を特徴とする請求項3に記載の半導体スイッチング素子。 - 前記ワイドバンドギャップサージ電流BJT、前記ワイドバンドギャップパワートランジスタおよび前記ワイドバンドギャップ駆動電界効果トランジスタのそれぞれは、炭化ケイ素に基づいた素子であること
を特徴とする請求項1に記載の半導体スイッチング素子。 - 前記ワイドバンドギャップサージ電流BJT、前記ワイドバンドギャップパワーMOSFETおよび前記ワイドバンドギャップ駆動MOSFETのそれぞれは、炭化ケイ素に基づいた素子を含み、
前記ワイドバンドギャップパワーMOSFETのゲートは、前記ワイドバンドギャップ駆動MOSFETのゲートに電気的に接続され、
前記ワイドバンドギャップパワーMOSFETの第一のソース/ドレイン領域は、前記ワイドバンドギャップサージ電流BJTのコレクタに電気的に接続され、
前記ワイドバンドギャップパワーMOSFETの第二のソース/ドレイン領域は、前記ワイドバンドギャップサージ電流BJTのエミッタに電気的に接続されること
を特徴とする請求項2に記載の半導体スイッチング素子。 - 前記ワイドバンドギャップ駆動MOSFETの第一のソース/ドレイン領域は、前記ワイドバンドギャップサージ電流BJTのコレクタに電気的に接続され、前記ワイドバンドギャップ駆動MOSFETの第二のソース/ドレイン領域は、前記ワイドバンドギャップサージ電流BJTのベースに電気的に接続されること
を特徴とする請求項6に記載の半導体スイッチング素子。 - n型炭化ケイ素ドリフト層と、
p型炭化ケイ素ベース層と、
前記n型炭化ケイ素ドリフト層上のp型炭化ケイ素p−ウェルと、
前記p型炭化ケイ素ベース層上のn型炭化ケイ素エミッタ領域と、
前記炭化ケイ素p−ウェルの上部における前記ワイドバンドギャップ駆動MOSFETの第一のn型ソース/ドレイン領域と、
前記炭化ケイ素p−ウェルの上部における前記ワイドバンドギャップパワーMOSFETの第一のn型ソース/ドレイン領域と
を含むことを特徴とする請求項2に記載の半導体スイッチング素子。 - 前記n型炭化ケイ素エミッタ領域に隣接する前記p型炭化ケイ素ベース層上に、高濃度にドープされたp型炭化ケイ素領域と、
前記高濃度にドープされたp型炭化ケイ素領域と前記ワイドバンドギャップ駆動MOSFETの前記第一のn型ソース/ドレイン領域との間に電気的な接続と
をさらに含む半導体スイッチング素子であって、
前記n型炭化ケイ素ドリフト層は、前記BJTのコレクタ、前記ワイドバンドギャップパワーMOSFETの第二のソース/ドレイン領域、および、前記ワイドバンドギャップ駆動MOSFETの第二のソース/ドレイン領域を含むこと
を特徴とする請求項8に記載の半導体スイッチング素子。 - 前記ワイドバンドギャップパワートランジスタのゲートと、前記ワイドバンドギャップ駆動電界効果トランジスタのゲートと、ワイドバンドギャップサージ電流BJTのエミッタに対する接点とが、前記半導体スイッチング素子の第一の面上にある縦型素子を含み、
前記ワイドバンドギャップサージ電流BJTのコレクタに対する接点が、前記半導体スイッチング素子の前記第一の面とは反対の第二の面上にあり、
前記ワイドバンドギャップパワートランジスタのソース接点と、前記ワイドバンドギャップパワートランジスタのドレイン接点との間の第一の電流路の長さは、前記ワイドバンドギャップサージ電流BJTの前記エミッタに対する接点と、前記ワイドバンドギャップサージ電流BJTの前記コレクタに対する接点との間の第二の電流路の長さと同じであること
を特徴する請求項1に記載の半導体スイッチング素子。
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