JP6368646B2 - パワーモジュール半導体装置およびインバータ装置、およびパワーモジュール半導体装置の製造方法、および金型 - Google Patents
パワーモジュール半導体装置およびインバータ装置、およびパワーモジュール半導体装置の製造方法、および金型 Download PDFInfo
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Description
比較例に係るパワーモジュール半導体装置2aは、ワンインワンモジュールの構成を備える。すなわち、1個のMOSFETQが1つのモジュールに内蔵されている。一例として6チップ(MOSトランジスタ×6)搭載可能であり、それぞれのMOSFETQは、6個まで並列接続可能である。尚、6チップの内、一部をダイオードDI用として搭載することも可能である。
(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9に示すように表される。また、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10に示すように表される。
第1の実施の形態に係るストレート配線構造のパワーモジュール半導体装置2を6個配置して3相交流インバータ装置4を構成した模式的平面構成は、図20に示すように表される。
第1の実施の形態に係るストレート配線構造のパワーモジュール半導体装置2を6個配置して3相交流インバータ装置4を構成した各パワー端子間の接続配線(バスバー)電極(GNDL・POWL)も含む模式的平面構成において、制御基板6および電源基板8を上部に配置した例は、図27に示すように表され、図27のXI−XI線に沿う模式的断面構造は、図28に示すように表される。
第1の実施の形態に係るストレート配線構造のパワーモジュール半導体装置2を4個配置して構成したフルブリッジインバータ装置5の回路構成は、図32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2に適用する半導体デバイス100(Q)の例として、SiC MOSFETの模式的断面構造は、図34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37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2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。
第1の実施の形態に係るパワーモジュール半導体装置の製造方法において、電力系端子ST・DTおよび信号系端子CS・G・SSの半田付け工程に使用するカーボン治具400の模式的平面構成は、図38(a)に示すように表される。
以下、図41〜図46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の製造方法において使用する金型の構成について説明する。
図47〜図54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の製造方法におけるモールディング工程について詳細に説明する。ここでは、図32において説明したモールディング工程を詳細に説明する。
図55〜図57を参照して、下金型300、セパレート金型310および上金型305を用いた第1の実施の形態に係るパワーモジュール半導体装置2の他の実施例に係るモールディング工程について説明する。
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の模式的鳥瞰構成は、図58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2であって、ワンインワンモジュールの模式的鳥瞰構成は、図64に示すように表される。
第4の実施の形態に係るパワーモジュール半導体装置1であって、ツーインワンモジュールの模式的回路表現は、図71に示すように表される。
上記のように、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、80…半田層
4、4a、5…インバータ装置
6…制御基板
8…電源基板
10…セラミック基板(絶縁基板)
10a、10b…銅プレート層
10a(D)、10a(S)、10a(EP)…パターン
12…樹脂層
18o、18n、18p…柱状接続電極
20、201、204…柱状電極
22、221、224…上面板電極
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
60…絶縁膜
100、Q、Q1〜Q6…半導体デバイス(SiC MOSFET、半導体チップ)
200、300…下金型
201…導入孔
201a、250c…案内溝
202…本体載置部
203、203a、203b…端子載置部
204…収容部
205…固定機構
210、211…ボルト孔
220、305…上金型
222、224…土手部
223…樹脂注入部
225、226…エアベント
250、251、252…ブロック部材
250a、251a、252a…収容孔
250b、251b、252b…ネジ孔
251c、300a、300b…突起部
251d、252d…傾斜面
270…バリ
280、281…止めネジ
282、283…ジャッキアップ用ネジ
290…隙間
292…信号系端子
301、302、303…セパレート部材
304…ネジ
310…セパレート金型
400…カーボン治具
401a…ドレイン端子DT載置部
401b…ソース端子ST載置部
402…セラミック基板載置部
403…ホットプレート
D1〜D6、DI…ダイオード
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
N…負側電源入力端子
DT…ドレイン端子
ST…ソース端子
POWL、GNDL、UL、VL、WL…接続配線(バスバー)電極
O、U、V、W…出力端子
G、G1〜G6…ゲート信号端子
S1、S4、SS、SS1〜SS6…ソースセンス端子
CS、CS1〜CS6、T1、T4…電流センス端子
B1、B2…サーミスタ接続端子
CSP…電流センス電極パターン
GSP…ゲート信号電極パターン
SSP…ソースセンス電極パターン
A、A1、A4…アノード電極
K、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 (28)
- 絶縁基板と、
前記絶縁基板上に配置された銅プレート層の第1パターンと、
前記第1パターン上に配置された半導体デバイスと、
前記半導体デバイスと電気的に接続される電力系端子および信号系端子と、
前記半導体デバイスおよび前記絶縁基板を被覆する樹脂層と
を備え、
前記信号系端子は、前記絶縁基板の主表面に対して垂直方向に延伸して配置され、
前記電力系端子は、前記樹脂層の側面から主表面と平行方向に配置され、
前記電力系端子は、前記樹脂層の主表面と平行に、長手方向に沿って、前記樹脂層の対向する両側面から互いに逆方向に延伸して配置され、ストレート配線構造を有し、
前記電力系端子は、前記樹脂層の厚み方向に、所定の段差をもって配置されることを特徴とするパワーモジュール半導体装置。 - 前記絶縁基板の主表面に対する前記垂直方向は、前記樹脂層の主表面に対する垂直方向に等しいことを特徴とする請求項1に記載のパワーモジュール半導体装置。
- 前記信号系端子は、前記樹脂層の主表面上に直線状に配置されることを特徴とする請求項1に記載のパワーモジュール半導体装置。
- 前記信号系端子は、前記樹脂層の主表面上に千鳥状に配置されることを特徴とする請求項1に記載のパワーモジュール半導体装置。
- 前記信号系端子は、ゲート信号端子およびセンサ用端子を備えることを特徴とする請求項1に記載のパワーモジュール半導体装置。
- 前記絶縁基板上に、前記半導体デバイスに隣接して配置された電極パターンを備え、
前記信号系端子は、前記電極パターンに半田付けにより接続されることを特徴とする請求項1に記載のパワーモジュール半導体装置。 - 前記センサ用端子は、ソースセンス端子および電流センス端子を備えることを特徴とする請求項5に記載のパワーモジュール半導体装置。
- 前記絶縁基板は、セラミック基板で構成されることを特徴とする請求項1〜7の何れか1項に記載のパワーモジュール半導体装置。
- 前記半導体デバイスは、ワンインワン、ツーインワン、フォーインワンもしくはシックスインワン型のいずれかのモジュールに適用されることを特徴とする請求項1に記載のパワーモジュール半導体装置。
- 絶縁基板と、
前記絶縁基板上に配置された銅プレート層の第1パターンと、
前記第1パターン上に配置された半導体デバイスと、
前記半導体デバイスと電気的に接続される電力系端子および信号系端子と、
前記半導体デバイスおよび前記絶縁基板を被覆する樹脂層と、
前記銅プレート層の第2パターンと、
前記半導体デバイス上に配置された柱状電極と、
前記柱状電極上に配置された上面板電極と、
前記第1パターン上に配置された前記電力系端子であるドレイン端子と、
前記第2パターン上に配置され、かつ前記上面板電極と接続された柱状接続電極と、
前記柱状接続電極に接続された前記電力系端子であるソース端子と
を備え、
前記信号系端子は、前記絶縁基板の主表面に対して垂直方向に延伸して配置されることを特徴とするパワーモジュール半導体装置。 - 前記ソース端子は、前記半導体デバイスのソースパッド電極に接続され、前記ドレイン端子は、前記半導体デバイスのドレイン電極パターンに接続されたことを特徴とする請求項10に記載のパワーモジュール半導体装置。
- 前記ドレイン端子および前記ソース端子は、前記樹脂層の主表面と平行に、長手方向に沿って、前記樹脂層の対向する両側面から互いに逆方向に延伸して配置されることを特徴とする請求項10に記載のパワーモジュール半導体装置。
- 前記セラミック基板は、Al2O3、AlN、SiN、AlSiC、若しくは少なくとも表面が絶縁性のSiCあることを特徴とする請求項8に記載のパワーモジュール半導体装置。
- 前記半導体デバイスは、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ことを特徴とする請求項1に記載のパワーモジュール半導体装置。
- 前記柱状電極および前記柱状接続電極は、CuMo若しくはCuであることを特徴とする請求項10に記載のパワーモジュール半導体装置。
- 前記上面板電極は、CuMo若しくはCuであることを特徴とする請求項10に記載のパワーモジュール半導体装置。
- 前記樹脂層は、トランスファモールド樹脂、エポキシ系樹脂若しくはシリコーン系樹脂で形成されたことを特徴とする請求項1に記載のパワーモジュール半導体装置。
- 本体載置部と、電力系端子の端子載置部と、信号系端子を固定する固定機構とを有する下金型にパワーモジュール半導体装置を搭載する工程と、
前記固定機構に前記信号系端子を固定する工程と、
前記下金型と上金型を嵌合する工程と、
前記下金型と前記上金型との間に形成される樹脂注入用の空間に対して樹脂を注入する工程と、
前記下金型から前記上金型を取り外す工程と、
樹脂封止された前記パワーモジュール半導体装置を取り外す工程と
を有し、
前記下金型は、矩形状の収容部を備え、前記固定機構は、前記収容部に収容され、
前記固定機構は、前記信号系端子を案内する直線状の案内溝を有する第1ブロック部材と、前記案内溝と係合する突起部を有し前記第1ブロック部材に対して進退可能に摺動する第2ブロック部材と、前記第2ブロック部材と係合して前記第2ブロック部材を前記第1ブロック部材側に押圧する第3ブロック部材とを備え、前記第2ブロック部材の前記第3ブロック部材と対向する面は下り方向に傾斜する下り傾斜面を有し、前記第3ブロック部材の前記第2ブロック部材と対向する面は上り方向に傾斜する上り傾斜面を有し、
前記固定機構に前記信号系端子を固定する工程は、
前記下金型の前記収容部内に固定された第1ブロック部材の前記案内溝に前記信号系端子を係合させる工程と、
前記突起部を前記案内溝側に対向させた状態で前記第2ブロック部材を前記収容部内に摺動可能に載置する工程と、
前記第2ブロック部材の前記下り傾斜面に接触させた状態で第3ブロック部材を配置し、前記第3ブロック部材のネジ孔に挿通された止めネジを前記下金型に螺合させて、前記第2ブロック部材を前記第1ブロック部材側に押圧する工程と
を有することを特徴とするパワーモジュール半導体装置の製造方法。 - 本体載置部と、電力系端子の端子載置部と、信号系端子を固定する固定機構とを有する下金型にパワーモジュール半導体装置を搭載する工程と、
前記固定機構に前記信号系端子を固定する工程と、
前記下金型と上金型を嵌合する工程と、
前記下金型と前記上金型との間に形成される樹脂注入用の空間に対して樹脂を注入する工程と、
前記下金型から前記上金型を取り外す工程と、
樹脂封止された前記パワーモジュール半導体装置を取り外す工程と
を有し、
前記固定機構は、前記信号系端子を案内する直線状の案内溝を有する第1ブロック部材と、前記案内溝と係合する突起部を有し前記第1ブロック部材に対して進退可能に摺動する第2ブロック部材と、前記第2ブロック部材と係合して前記第2ブロック部材を前記第1ブロック部材側に押圧する第3ブロック部材とを備え、前記第2ブロック部材の前記第3ブロック部材と対向する面は下り方向に傾斜する下り傾斜面を有し、前記第3ブロック部材の前記第2ブロック部材と対向する面は上り方向に傾斜する上り傾斜面を有し、
前記パワーモジュール半導体装置を取り外す工程は、
前記第1ブロック部材および前記第2ブロック部材に形成されたジャッキアップ用のネジ孔にジャッキアップ用ネジを挿通する工程と、
前記ジャッキアップ用ネジを締め付けて、前記第1ブロック部材および前記第2ブロック部材を前記下金型側から上昇させる工程と
を有することを特徴とするパワーモジュール半導体装置の製造方法。 - パワーモジュール半導体装置の本体載置部と、前記パワーモジュール半導体装置の電力系端子の端子載置部と、前記パワーモジュール半導体装置の信号系端子を固定する固定機構とを有する下金型と、
前記下金型と嵌合する上金型と
を備え、
前記固定機構は、
前記信号系端子を案内する直線状の案内溝を備えた第1ブロック部材と、
前記案内溝と係合する突起部を備え前記第1ブロック部材に対して進退可能に摺動する第2ブロック部材と、
前記第2ブロック部材と係合して当該第2ブロック部材を前記第1ブロック部材側に押圧する第3ブロック部材と
を備え、
前記第2ブロック部材の前記第3ブロック部材と対向する面は下り方向に傾斜する下り傾斜面を有し、前記第3ブロック部材の前記第2ブロック部材と対向する面は上り方向に傾斜する上り傾斜面を有することを特徴とする金型。 - 前記下金型は、矩形状の収容部を備え、
前記固定機構は、前記収容部に収容されることを特徴とする請求項20に記載の金型。 - 前記第1ブロック部材および前記第3ブロック部材は、前記収容部内において、前記下金型側に螺合される止めネジを挿通可能なネジ孔を備え、
前記第3ブロック部材は、止めネジの螺合に伴って前記下金型に移動する際に、前記傾斜面同士の係合により前記第2ブロック部材に対して、前記第1ブロック部材に向かう方向の押圧力を生じさせることを特徴とする請求項21に記載の金型。 - 前記第1ブロック部材および前記第2ブロック部材は、ジャッキアップ用ネジを螺合させるネジ孔を備えることを特徴とする請求項21に記載の金型。
- 前記第1ブロック部材は、前記収容部内において、前記下金型側に螺合される止めネジを挿通可能なネジ孔を備え、
前記第1ブロック部材の前記止めネジを挿通可能なネジ孔は、ジャッキアップ用ネジを螺合させるネジ孔を兼ねることを特徴とする請求項21に記載の金型。 - ストレート配線構造を有するパワーモジュール半導体装置を複数個並列に配置し、各パワーモジュール半導体装置の電力系端子をバスバー電極を介して接続したインバータ装置であって、
前記パワーモジュール半導体装置は、
絶縁基板と、
前記絶縁基板上に配置された銅プレート層の第1パターンと、
前記第1パターン上に配置された半導体デバイスと、
前記半導体デバイスと電気的に接続される電力系端子および信号系端子と、
前記半導体デバイスおよび前記絶縁基板を被覆する樹脂層と
を備え、
前記信号系端子は、前記絶縁基板の主表面に対して垂直方向に延伸して配置され、
前記電力系端子は、前記樹脂層の側面から主表面と平行方向に配置され、
前記電力系端子は、前記樹脂層の主表面と平行に、長手方向に沿って、前記樹脂層の対向する両側面から互いに逆方向に延伸して配置され、ストレート配線構造を有し、
前記電力系端子は、前記樹脂層の厚み方向に、所定の段差をもって配置されることを特徴とするインバータ装置。 - 前記パワーモジュール半導体装置のドレイン端子およびソース端子が、隣接する前記パワーモジュール半導体装置のソース端子およびドレイン端子と互いに対向するように配置したことを特徴とする請求項25に記載のインバータ装置。
- 前記複数のパワーモジュール半導体装置は、ハーフブリッジを構成する第1トランジスタと第2トランジスタを隣接して配置し、かつ前記第1トランジスタのソース端子およびドレイン端子と、前記第2トランジスタのドレイン端子およびソース端子が、互いに隣接するように配置したことを特徴とする請求項25に記載のインバータ装置。
- 複数個配置された前記パワーモジュール半導体装置上に配置され、前記パワーモジュール半導体装置を制御する制御基板と、
複数個並列に配置された前記パワーモジュール半導体装置上に配置され、前記パワーモジュール半導体装置および前記制御基板に電源を供給する電源基板と
を備え、
前記信号系端子が延伸する前記絶縁基板の主表面に対して垂直方向の長さは、前記制御基板および前記電源基板と接続可能な長さであることを特徴とする請求項25に記載のインバータ装置。
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JP2018160699A (ja) | 2018-10-11 |
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EP4167279A2 (en) | 2023-04-19 |
EP2899757B1 (en) | 2023-01-11 |
US20210134706A1 (en) | 2021-05-06 |
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EP4293714A3 (en) | 2024-02-28 |
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