JP7162013B2 - Dc端子の同軸配列を有するハーフブリッジモジュール - Google Patents
Dc端子の同軸配列を有するハーフブリッジモジュール Download PDFInfo
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- 238000001465 metallisation Methods 0.000 claims description 57
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Description
本発明はハーフブリッジモジュールに関する。
IGBTまたはMOSFETなどの、ソリッドステート半導体スイッチを含むパワー半導体モジュールは、電流を切替えるまたは整流するためにさまざまなパワーエレクトロニクス用途に用いられている。重要な急成長している用途は、電気車両またはハイブリッド電気車両用のコンバータシステムである。そのような用途についての典型的なモジュールの定格電圧は最大で1200Vであり、定格電流は数百アンペアであり得る。
本発明の目的は、ハーフブリッジモジュールへの相互接続における浮遊インダクタンスを低下させることである。本発明のさらなる目的は、低インダクタンス端子配列を有するハーフブリッジモジュールを提供することである。
図面で使用する参照符号およびそれらの意味は、参照符号のリストでまとめて列挙している。原則として、図中同一の部分には同一の参照符号を付している。
10,10′ ハーフブリッジモジュール
12,12′ 基板
14 ベースメタライゼーション層
16 第1のDC導電領域
18 AC導電領域
20 第2のDC導電領域
22 パワー半導体スイッチチップ
24 パワー半導体ダイオードチップ
26 ボンドワイヤ
28 ハイサイド半導体スイッチチップの列
30 ハイサイド半導体ダイオードチップの列
32 ローサイド半導体スイッチチップの列
34 ローサイド半導体ダイオードチップの列
35 同軸DC端子配列
36 第1の外側DC端子
38 内側DC端子
40 第2の外側DC端子
41 AC端子配列
42 AC端子
44 DC接合/電流分配セクション
46 チップボンディング/中央セクション
48 AC接合セクション
H 端子の突出方向
V 方向
50 第2のDC導電領域の部分
52 第1のDC導電領域の部分、ブリッジ要素
54 絶縁基板
56 高められたメタライゼーション層
58 ワイヤボンド
60 接続端
62 接合端
64 中央セクション
66 補助導電領域
68 絶縁基板
70 高められたメタライゼーション層、ブリッジ要素
72 ワイヤボンド
74 金属クリップ
76 接合端
78 中央セクション
80 成形封入物
10′ パワーモジュール
82 同一平面の端子配列
84 平面の端子プレート
86 平面の端子プレート
88 導電領域
90 交互配置されたDC端子
92 端子配列
94 DC端子
96 DC端子
Claims (12)
- ハーフブリッジモジュール(10)であって、
第1のDC導電領域(16)、第2のDC導電領域(20)およびAC導電領域(18)に分けられるベースメタライゼーション層(14)を有する基板(12)と、
前記第1のDC導電領域(16)に接合されて前記AC導電領域(18)に電気的に相互接続される少なくとも1つの第1のパワー半導体スイッチチップ(22)と、
前記AC導電領域(18)に接合されて前記第2のDC導電領域(20)に電気的に相互接続される少なくとも1つの第2のパワー半導体スイッチチップ(22)と、
少なくとも1つの内側DC端子(38)、少なくとも1つの第1の外側DC端子(36)および少なくとも1つの第2の外側DC端子(40)を備える同軸端子配列(35)とを備え、
前記少なくとも1つの内側DC端子(38)、前記少なくとも1つの第1の外側DC端子(36)および前記少なくとも1つの第2の外側DC端子(40)は、前記少なくとも1つの内側DC端子(38)が前記少なくとも1つの第1の外側DC端子(36)と前記少なくとも1つの第2の外側DC端子(40)との間に同軸配列されるように、前記モジュール(10)から突出して一列に配列され、
前記少なくとも1つの内側DC端子(38)は前記第2のDC導電領域(20)に電気的に接続され、
前記少なくとも1つの第1の外側DC端子(36)および前記少なくとも1つの第2の外側DC端子(40)は前記第1のDC導電領域(16)に電気的に接続され、
前記少なくとも1つの第1の外側DC端子(36)および前記少なくとも1つの第2の外側DC端子(40)は導電ブリッジ要素(52,70)に電気的に相互接続され、前記導電ブリッジ要素は、前記少なくとも1つの第1の外側DC端子(36)と前記少なくとも1つの第2の外側DC端子(40)との間に負荷電流の少なくとも半分を分配するように適合され、
高められたメタライゼーション層(56,70)が前記ベースメタライゼーション層(14)に取付けられ、
前記ブリッジ要素は、前記高められたメタライゼーション層(56)の下方の前記第1のDC導電領域(16)のブリッジ要素(52)によって設けられる、ハーフブリッジモジュール。 - 前記ブリッジ要素は、前記第1のDC導電領域(16)のうち、前記高められたメタライゼーション層(56)の下方において、前記少なくとも1つの第1の外側DC端子(36)の接合領域と前記少なくとも1つの第2の外側DC端子(40)の接合領域との間をつなぐ領域を含む、請求項1に記載のハーフブリッジモジュール。
- 前記ブリッジ要素(52,70)は、前記基板(12)および前記少なくとも1つの第1のおよび/または第2のパワー半導体スイッチチップ(22)が収容される前記モジュール(10)のハウジング(80)の内部に配置され、
前記ハウジングは成形封入物である、請求項1または2に記載のハーフブリッジモジュール(10)。 - 前記少なくとも1つの第1のおよび/または第2のパワー半導体スイッチチップ(22)はSiチップであり、
フリーホイールダイオードを提供する複数のパワー半導体チップ(24)が前記第1のDC導電領域(16)および前記AC導電領域(18)に接合される、請求項1~3のいずれか1項に記載のハーフブリッジモジュール(10)。 - 前記少なくとも1つの第1の外側DC端子(36)および前記少なくとも1つの第2の外側DC端子(40)は前記ブリッジ要素(52)に接合される、請求項1~4のいずれか1項に記載のハーフブリッジモジュール(10)。
- 前記少なくとも1つの内側DC端子(38)は前記高められたメタライゼーション層(56)に接合される、請求項5に記載のハーフブリッジモジュール(10)。
- ハーフブリッジモジュール(10)であって、
第1のDC導電領域(16)、第2のDC導電領域(20)およびAC導電領域(18)に分けられるベースメタライゼーション層(14)を有する基板(12)と、
前記第1のDC導電領域(16)に接合されて前記AC導電領域(18)に電気的に相互接続される少なくとも1つの第1のパワー半導体スイッチチップ(22)と、
前記AC導電領域(18)に接合されて前記第2のDC導電領域(20)に電気的に相互接続される少なくとも1つの第2のパワー半導体スイッチチップ(22)と、
少なくとも1つの内側DC端子(38)、少なくとも1つの第1の外側DC端子(36)および少なくとも1つの第2の外側DC端子(40)を備える同軸端子配列(35)とを備え、
前記少なくとも1つの内側DC端子(38)、前記少なくとも1つの第1の外側DC端子(36)および前記少なくとも1つの第2の外側DC端子(40)は、前記少なくとも1つの内側DC端子(38)が前記少なくとも1つの第1の外側DC端子(36)と前記少なくとも1つの第2の外側DC端子(40)との間に同軸配列されるように、前記モジュール(10)から突出して一列に配列され、
前記少なくとも1つの内側DC端子(38)は前記第2のDC導電領域(20)に電気的に接続され、
前記少なくとも1つの第1の外側DC端子(36)は前記第1のDC導電領域(16)に電気的に接続され、
前記少なくとも1つの第2の外側DC端子(40)は、前記第1のDC導電領域(16)から隔てられた前記ベースメタライゼーション層(14)の補助導電領域(66)に接合され、
前記少なくとも1つの第1の外側DC端子(36)および前記少なくとも1つの第2の外側DC端子(40)は導電ブリッジ要素(52,70)に電気的に相互接続され、前記導電ブリッジ要素は、前記少なくとも1つの第1の外側DC端子(36)と前記少なくとも1つの第2の外側DC端子(40)との間に負荷電流の少なくとも半分を分配するように適合され、
高められたメタライゼーション層(56,70)を有する絶縁基板(54,68)が前記ベースメタライゼーション層(14)に取付けられ、
前記ブリッジ要素は、前記高められたメタライゼーション層(70)によって、または前記高められたメタライゼーション層(56)の下方の前記第1のDC導電領域(16)のブリッジ要素(52)によって設けられる、ハーフブリッジモジュール。 - 前記高められたメタライゼーション層(70)は前記第2のDC導電領域(20)の上方に取付けられ、
前記高められたメタライゼーション層(70)は前記第1のDC導電領域(16)および前記補助導電領域(66)に電気的に相互接続される、請求項7に記載のハーフブリッジモジュール(10)。 - 前記少なくとも1つの内側DC端子(38)は、前記ブリッジ要素(70)の下方に導かれる前記第2のDC導電領域(20)の部分(50)に接合される、請求項7または8に記載のハーフブリッジモジュール(10)。
- 前記モジュール(10)は少なくとも2つの内側DC端子(38)を備え、
前記モジュール(10)は少なくとも2つの第1の外側DC端子(36)および少なくとも2つの第2の外側DC端子(40)を備える、請求項1~9のいずれか1項に記載のハーフブリッジモジュール(10)。 - 前記DC端子(36,38,40)は金属片からなり、
前記DC端子(36,38,40)は同じ断面を有する、請求項1~10のいずれか1項に記載のハーフブリッジモジュール(10)。 - 前記モジュール(10)は、前記AC導電領域(18)に電気的に相互接続される少なくとも1つのAC端子(42)を備え、
前記少なくとも1つのAC端子(42)は前記AC導電領域(18)に直接接合され、
前記少なくとも1つのAC端子(42)は前記同軸端子配列(35)に関して前記モジュール(10)の反対側に配列され、
前記少なくとも1つのAC端子(42)は前記モジュール(10)から、前記少なくとも1つの第1の外側DC端子(36)、少なくとも1つの内側DC端子(38)および少なくとも1つの第2の外側DC端子(40)の突出方向(V)とは反対側に突出し、
前記モジュール(10)は少なくとも2つのAC端子(42)を備える、請求項1~11のいずれか1項に記載のハーフブリッジモジュール(10)。
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