JP6765469B2 - パワーモジュール半導体装置 - Google Patents
パワーモジュール半導体装置 Download PDFInfo
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- JP6765469B2 JP6765469B2 JP2019054547A JP2019054547A JP6765469B2 JP 6765469 B2 JP6765469 B2 JP 6765469B2 JP 2019054547 A JP2019054547 A JP 2019054547A JP 2019054547 A JP2019054547 A JP 2019054547A JP 6765469 B2 JP6765469 B2 JP 6765469B2
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- semiconductor device
- power module
- electrode
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- module semiconductor
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Description
(半導体装置の構成)
第1の実施の形態に係るパワーモジュール半導体装置1であって、ツーインワンモジュール(2 in 1 Module)の模式的鳥瞰構成は、図1に示すように表される。
第1の実施の形態に係るパワーモジュール半導体装置1に適用する半導体デバイス100(Q1・Q4)の例として、SiC MOSFETの模式的断面構造は、図13に示すように、n-高抵抗層からなる半導体基板26と、半導体基板26の表面側に形成されたpベース領域28と、pベース領域28の表面に形成されたソース領域30と、pベース領域28間の半導体基板26の表面上に配置されたゲート絶縁膜32と、ゲート絶縁膜32上に配置されたゲート電極38と、ソース領域30およびpベース領域28に接続されたソース電極34と、半導体基板26の表面と反対側の裏面に配置されたn+ドレイン領域24と、n+ドレイン領域24に接続されたドレインパッド電極36とを備える。
次に、図15を参照して、第1の実施の形態に係るパワーモジュール半導体装置1を用いて構成した3相交流インバータについて説明する。
また、第1の実施の形態に係るパワーモジュール半導体装置1において、信号端子を折り曲げた模式的鳥瞰構成は、図17に示すように表される。また、第1の実施の形態に係るパワーモジュール半導体装置1を3個並列に配置し、3相交流インバータを駆動する模式的回路構成は、図18に示すように表される。
第2の実施の形態に係るパワーモジュール半導体装置2であって、ワンインワンモジュール(1 in 1 Module)の模式的回路表現は、図19に示すように表される。また、第2の実施の形態に係るパワーモジュール半導体装置2であって、ワンインワンモジュールの詳細回路表現は、図20に示すように表される。
第3の実施の形態に係るパワーモジュール半導体装置の模式的断面構造は、図27(a)に示すように表され、図27(a)の上面板電極部分の模式的鳥瞰構成は、図27(b)に示すように表される。
比較例の上面板電極22の平面パターン構成は、図30(a)に示すように表され、第3の実施の形態に係るパワーモジュール半導体装置に適用可能な上面板電極の構成例および別の構成例は、図30(b)および図30(c)に示すように表される。
第3の実施の形態に係るパワーモジュール半導体装置において、トランスファモールド樹脂を注入するため治具400内にデバイスを配置し、樹脂封入する工程を説明する側面構成は、図31に示すように表される。
図34は、第3の実施の形態の変形例1に係るパワーモジュール半導体装置において、トランスファモールド樹脂を注入するため治具400内にデバイスを配置し、樹脂封入する工程を説明する正断面構成図である。
図35は、第3の実施の形態の変形例2に係るパワーモジュール半導体装置において、トランスファモールド樹脂を注入するため治具400内にデバイスを配置し、樹脂封入する工程を説明する正断面構成図である。
図36は、第3の実施の形態の変形例3に係るパワーモジュール半導体装置において、トランスファモールド樹脂で樹脂封止した側断面構成図である。
図37は、第3の実施の形態の変形例4に係るパワーモジュール半導体装置において、トランスファモールド樹脂で樹脂封止した側断面構成図である。
第4の実施の形態に係るパワーモジュール半導体装置は、図38および図39に示すように表される。
第5の実施の形態に係るパワーモジュール半導体装置は、図42〜図45に示すように表される。
第6の実施の形態に係るパワーモジュール半導体装置は、図46〜図48に示すように表される。
上記のように、第1〜第6の実施の形態によって記載したが、この開示の一部をなす論述および図面は例示的なものであり、この発明を限定するものであると理解すべきではない。この開示から当業者には様々な代替実施の形態、実施例および運用技術が明らかとなろう。
3a、3b…半田層
10…セラミック基板
10a、10b…銅プレート層
12…樹脂層
18o、18n、18p、18n…柱状接続電極
20、201、204…柱状電極
22、221、224…上面板電極
22T…案内溝
22Ta…拡散用の溝
22S…凸状部
24…n+ドレイン領域
25…柱状延長電極
26…半導体基板
28…pベース領域
30…ソース領域
32…ゲート絶縁膜
34…ソース電極
36…ドレイン電極
38…ゲート電極
44…層間絶縁膜
46…蓄電池(E)
48…コンバータ
50…ゲートドライブ部
52…パワーモジュール部
54…三相モータ部
100、Q、Q1〜Q6…半導体デバイス(SiC MOSFET、半導体チップ)
D1〜D6、DI…ダイオード
400…治具
420…導入孔
430…排気孔
500…キャビティ
GP…ゲートパッド電極
SP…ソースパッド電極
P…正側電源入力端子(第2電源入力端子)
N…負側電源入力端子(第1電源入力端子)
DT…ドレイン端子(第2電源入力端子)
ST…ソース端子(第1電源入力端子)
O、U、V、W…出力端子
G、G1、G4…ゲート信号端子
S1、S4、SS…ソースセンス端子
CS、T1、T4…電流センス端子
B1、B2…サーミスタ接続端子
A1、A4…アノード電極
K1、K4…カソード電極
D、D(K1)、D(K4)…ドレイン電極パターン
EP…接地パターン
Claims (19)
- 表面上に配線層となる第1パターンおよび第2パターンが形成された絶縁基板と、
表面側にソースまたはエミッタとなる第1電極とゲート電極とを有し、且つ裏面側にドレインまたはコレクタとなる第2電極を有すると共に、該第2電極が前記第1パターン上に配置された第1パワーデバイスと、
前記第1電極上に配置された第1柱状電極と、
前記第1柱状電極上に配置された第1上面板電極と、
前記絶縁基板に取り付けられて前記絶縁基板の長手方向に延出する第1端子と
を備え、
前記ゲート電極と前記第2パターンとの間はワイヤにより接続されており、
前記第1端子は、前記絶縁基板上に形成された第4パターン上に配置された第1電源入力端子と、前記第1パターン上に配置された第2電源入力端子とを備え、
前記第1電源入力端子には、前記第1電源入力端子と前記第1パターンとを電気的に接続する第1柱状接続電極が一体的に形成されており、前記第2電源入力端子には、前記第1上面板電極と前記第4パターンとを電気的に接続する第2柱状接続電極が一体的に形成されている、パワーモジュール半導体装置。 - 複数の前記第1パワーデバイスが前記第1パターン上に配置されており、複数の前記第1柱状電極が前記複数の第1パワーデバイス上にそれぞれ配置されている、請求項1に記載のパワーモジュール半導体装置。
- 前記第1上面板電極は、前記複数の第1柱状電極を並列接続する、請求項2に記載のパワーモジュール半導体装置。
- 前記第2パターンは、前記複数の第1パワーデバイスに挟まれるように配置されている、請求項2または3に記載のパワーモジュール半導体装置。
- 前記第2パターンは、前記複数の第1パワーデバイスの一方側にのみに配置されている、請求項2または3に記載のパワーモジュール半導体装置。
- 前記第2パターンは、前記複数の第1パワーデバイスを挟むように配置されている、請求項2または3に記載のパワーモジュール半導体装置。
- 前記第1パターンと前記第1上面板電極との間に、前記第1パワーデバイスの機能とは異なる機能を有する第2パワーデバイスをさらに備える、請求項1に記載のパワーモジュール半導体装置。
- 前記第2パターンに接続される第2端子とをさらに備える、請求項1〜3のいずれか1項に記載のパワーモジュール半導体装置。
- 第1端子の厚みは、前記第1パワーデバイスと、前記第1柱状電極と、前記第1上面板電極と、前記第1柱状電極を前記第1上面板電極に接合する半田層との厚みの和と略同じである、請求項8に記載のパワーモジュール半導体装置。
- 前記絶縁基板の裏面側に配置される第3パターンをさらに備え、前記第3パターンの一部と前記第1端子および前記第2端子の一部を封止するパッケージをさらに備える、請求項9に記載のパワーモジュール半導体装置。
- 前記パッケージは、前記第3パターンの表面を露出すると共に側面を封止する、請求項10に記載のパワーモジュール半導体装置。
- 前記パッケージは、前記第1パワーデバイスと前記第1柱状電極と前記第1上面板電極と前記ワイヤとを封止する樹脂層を備え、前記絶縁基板はセラミック基板である、請求項10に記載のパワーモジュール半導体装置。
- 前記第1柱状電極の厚みは、前記第1パワーデバイスの厚みより厚い、請求項1〜12のいずれか1項に記載のパワーモジュール半導体装置。
- 前記第1上面板電極の厚みは、前記第1パワーデバイスの厚みより厚い、請求項1〜13のいずれか1項に記載のパワーモジュール半導体装置。
- 前記第1上面板電極は、前記第2パターンの上方を覆わないように配置されている、請求項1〜14のいずれか1項に記載のパワーモジュール半導体装置。
- 前記第1上面板電極の前記第1柱状電極と接合されない面側には、複数の溝が形成されている、請求項1〜15のいずれか1項に記載のパワーモジュール半導体装置。
- 前記第1パワーデバイス、前記第1柱状電極および前記第1上面板電極と、前記絶縁基板の厚み方向から見た平面視で、前記絶縁基板の中心に対して点対称に配置された第3パワーデバイス、第2柱状電極および第2上面板電極を有することを特徴とする請求項1〜16のいずれか1項に記載のパワーモジュール半導体装置。
- 前記第1柱状電極および前記第2柱状電極は、CuMo若しくはCuであることを特徴とする請求項17に記載のパワーモジュール半導体装置。
- 前記第1パワーデバイスは、Si系、SiC系、GaN系、若しくはAlN系のいずれかのパワーデバイスである、請求項1〜18のいずれか1項に記載のパワーモジュール半導体装置。
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