JP2018524813A - マルチ電極制御を備える高電圧デバイス - Google Patents
マルチ電極制御を備える高電圧デバイス Download PDFInfo
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Abstract
Description
Claims (20)
- 高電圧デバイスであって、
第1の基板上に形成される低電圧トランジスタ(LVT)、及び、
第2の基板上に形成される高電子移動度トランジスタ(HEMT)、
を含み、
前記LVTが、第1のドレインノード、第1の制御ゲート、及び第1のソースノードを有し、
前記HEMTが、
前記第2の基板の上に配置される2次元電子ガス(2DEG)層と、
前記2DEG層の上に配置され、高電圧源を受け取るように構成される、第2のドレインノードと、
前記2DEG層の上に配置され、前記LVTの前記第1のドレインノードと接続される、第2のソースノードと、
前記2DEG層の上に配置され、前記第2のドレインノード、前記第2のソースノード、及び前記2DEG層によって連帯的に画定されるチャネルをレギュレートするように構成される、第2の制御ゲートと、
前記チャネルの上に配置され、前記チャネルに沿って電荷を分布させるように構成される、フィールド電極であって、前記フィールド電極が前記第2の基板によって画定される領域にわたって前記第2の制御ゲート及び前記第2のソースノードと接していない、前記フィールド電極と、
を有する、
高電圧デバイス。 - 請求項1に記載の高電圧デバイスであって、前記フィールド電極が、前記第2の制御ゲートより前記2DEG層からより遠くに位置する、高電圧デバイス。
- 請求項1に記載の高電圧デバイスであって、
前記第2の基板の上に形成され、前記HEMTの前記フィールド電極と接続される、第1のボンディングパッド、
前記第2の基板の上に形成され、前記第1のボンディングパッドから分離される第2のボンディングパッドであって、前記HEMTの第2の制御ゲートと接続される、前記第2のボンディングパッド、及び、
前記第2の基板の上に形成され、前記第1のボンディングパッドから分離される第3のボンディングパッドであって、前記HEMTの第2のソースノードと接続される、前記第3のボンディングパッド、
を更に含む、高電圧デバイス。 - 請求項1に記載の高電圧デバイスであって、
前記HEMTの前記フィールド電極が、第1のボンディングワイヤを介して前記LVTの前記第1のソースノードに接続され、
前記HEMTの前記第2の制御ゲートが、前記第1のボンディングワイヤから分離される第2のボンディングワイヤを介して前記LVTの前記第1のソースノードに接続され、
前記LVTの前記第1のソースノードが、ソース電圧を受け取るように構成される、
高電圧デバイス。 - 請求項4に記載の高電圧デバイスであって、
前記HEMTの前記フィールド電極が、前記第1のボンディングワイヤと直列の第1のリンギング抑制器を介して前記LVTの前記第1のソースノードに接続され、
前記HEMTの前記第2の制御ゲートが、前記第2のボンディングワイヤと直列の第2のリンギング抑制器を介して前記LVTの前記第1のソースノードに接続されて、前記第2のリンギング抑制器が前記第1のリンギング抑制器から電気的に独立するようにされる、
高電圧デバイス。 - 請求項1に記載の高電圧デバイスであって、
前記HEMTの前記第2の制御ゲートが、前記チャネルをレギュレートするために第1の電圧を受け取るように構成され、
前記HEMTの前記フィールド電極が、前記第1の電圧とは異なる第2の電圧を受け取るように構成され、前記第2の電圧が、前記チャネルに沿って前記電荷を分布させるためのものである、
高電圧デバイス。 - 請求項1に記載の高電圧デバイスであって、前記HEMTの前記フィールド電極が、
前記チャネルの第1の領域の上に配置され、前記第2の制御ゲートとは接していない、第1のフィールド電極であって、前記チャネルの前記第1の領域における電荷を分布させるように構成される、前記第1のフィールド電極、及び、
前記第1のフィールド電極から分離される第2のフィールド電極であって、前記第2のフィールド電極が、前記チャネルの第2の領域の上に配置され、前記第2の制御ゲートとは接しておらず、前記チャネルの前記第2の領域における電荷を分布させるように構成される、前記第2のフィールド電極、
を含む、高電圧デバイス。 - 請求項1に記載の高電圧デバイスであって、前記第1の基板が前記第2の基板から分離する、高電圧デバイス。
- 請求項1に記載の高電圧デバイスであって、
前記第1の基板が、共通基板上のLVT領域を占有し、
前記第2の基板が、前記共通基板上のHEMT領域を占有する、
高電圧デバイス。 - 高電圧スイッチであって、前記高電圧スイッチが、
高電圧トランジスタ(HVT)、及び
低電圧トランジスタ(LVT)、
を含み、
前記HVTが、
高電圧源を受け取るように構成されるドレインノードと、
前記ドレインノードと高電圧チャネルを画定するように構成されるソースノードと、
前記ドレインノードと前記ソースノードとの間に置かれる制御ゲートであって、前記高電圧チャネルをレギュレートするように構成される、前記制御ゲートと、
前記高電圧チャネルの上に配置され、前記高電圧チャネルを再レギュレートするように構成される、フィールド電極であって、前記ドレインノード、前記ソースノード、又は前記制御ゲートのうちのいずれの一つとも電荷を共有することを防ぐように構造化及び配路される、前記フィールド電極と、
を有し、
前記LVTが、
前記HVTの前記ソースノードと結合され、出力電圧を搬送するように構成されるドレインノードと、
ソース電圧を受け取るように構成されるソースノードと、
前記HVTの前記制御ゲートと前記HVTの前記ソースノードとの間の電位差を調節することによって、入力電圧に応答して前記出力電圧を制御するように構成される、制御ゲートと、
を有する、
高電圧スイッチ。 - 請求項10に記載の高電圧スイッチであって、
前記HVTの前記フィールド電極が、第1のボンディングワイヤを介して前記LVTの前記ソースノードに接続され、
前記HVTの前記制御ゲートが、前記第1のボンディングワイヤから分離される第2のボンディングワイヤを介して前記LVTの前記ソースノードに接続される、
高電圧スイッチ。 - 請求項11に記載の高電圧スイッチであって、
前記HVTの前記フィールド電極が、前記第1のボンディングワイヤと直列の第1のリンギング抑制器を介して前記LVTの前記ソースノードに接続され、
前記HVTの前記制御ゲートが、前記第2のボンディングワイヤと直列の第2のリンギング抑制器を介して前記LVTの前記ソースノードに接続されて、前記第2のリンギング抑制器が前記第1のリンギング抑制器から電気的に独立するようにされる、
高電圧スイッチ。 - 請求項10に記載の高電圧スイッチであって、前記HVTの前記フィールド電極が、前記HVTによって画定される領域にわたって、前記HVTの前記ドレインノード、ソースノード、又は制御ゲートのうちのいずれの一つとも接していない、高電圧スイッチ。
- 請求項10に記載の高電圧スイッチであって、
前記HVTの前記制御ゲートが、前記高電圧チャネルに沿って電荷を終結させるために第1の電圧を受け取るように構成され、
前記HVTの前記フィールド電極が、前記第1の電圧とは異なる第2の電圧を受け取るように構成され、前記第2の電圧が、前記終結された電荷を前記高電圧チャネルに沿って拡散するためのものである、
高電圧スイッチ。 - 請求項10に記載の高電圧スイッチであって、前記HVTの前記フィールド電極が、
前記高電圧チャネルの第1の領域の上に配置され、前記高電圧チャネルの前記第1の領域における電荷を分布させるように構成される、第1のフィールド電極、及び、
前記第1のフィールド電極から分離され、前記高電圧チャネルの第2の領域の上に配置され、前記高電圧チャネルの前記第2の領域における電荷を分布させるように構成される、第2のフィールド電極、
を含む、高電圧スイッチ。 - 高電子移動度トランジスタ(HEMT)構造であって、
基板、
前記基板の上に配置される2次元電子ガス(2DEG)層、
前記2DEG層の第1の端部の上に配置されるドレインノード、
前記2DEG層の前記第1の端部と第2の端部との間に前記ドレインノードとのチャネルを画定するために前記2DEG層の前記第2の端部の上に配置されるソースノードであって、前記ドレインノードとのドレイン・ソース容量(CDS)を確立する、前記ソースノード、
前記チャネルの上に配置され、ゲート電圧に応答して前記チャネルに沿って電荷を終結させるように構成される制御ゲートであって、前記ソースノードとのゲート・ソース容量(CGS)を確立し、前記ドレインノードとのゲート・ドレイン容量(CGD)を確立する、前記制御ゲート、及び
前記チャネルの上に配置され、フィールド電圧に応答して前記終結された電荷を拡散するように構成されるフィールド電極であって、前記容量CDS、CGD、及びCGSを維持するように構造化及び配路される、前記フィールド電極、
を含む、HEMT構造。 - 請求項16に記載のHEMT構造であって、前記フィールド電極が、前記ドレインノード、ソースノード、又は制御ゲートのうちのいずれの一つとも電荷を共有することを防ぐように、構造化及び配路される、HEMT構造
- 請求項16に記載のHEMT構造であって、
前記基板の上に形成され、前記フィールド電極と接続される第1のボンディングパッド、
前記基板上に形成され、前記第1のボンディングパッドから分離され、前記制御ゲートと接続される、第2のボンディングパッド、及び、
前記基板上に形成され、前記第1のボンディングパッドから分離され、前記ソースノードと接続される、第3のボンディングパッド、
を更に含む、HEMT構造。 - 請求項16に記載のHEMT構造であって、前記フィールド電極が、前記制御ゲート、前記ドレインノード、及び前記ソースノードから構造的及び電気的に隔離される、HEMT構造。
- 請求項16に記載のHEMT構造であって、前記フィールド電極が、
前記チャネルの第1の領域の上に配置され、前記制御ゲートとは接していない第1のフィールド電極であって、前記チャネルの前記第1の領域における前記終結された電荷を分布させるように構成される、前記第1のフィールド電極、及び、
前記第1のフィールド電極から分離される第2のフィールド電極であって、前記第2のフィールド電極が、前記チャネルの第2の領域の上に配置され、前記制御ゲートとは接しておらず、前記チャネルの前記第2の領域における前記終結された電荷を分布させるように構成される、前記第2のフィールド電極、
を含む、HEMT構造。
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