JP2018152392A - 半導体モジュールおよび電力変換装置 - Google Patents
半導体モジュールおよび電力変換装置 Download PDFInfo
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- JP2018152392A JP2018152392A JP2017045677A JP2017045677A JP2018152392A JP 2018152392 A JP2018152392 A JP 2018152392A JP 2017045677 A JP2017045677 A JP 2017045677A JP 2017045677 A JP2017045677 A JP 2017045677A JP 2018152392 A JP2018152392 A JP 2018152392A
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- lead frame
- semiconductor module
- electrode
- switching element
- photocoupler
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Abstract
Description
図1は、本実施の形態1における半導体モジュール100の平面図である。図2は、図1の線分A−Aにおける半導体モジュール100の断面図である。また、図3は、半導体モジュール100の構成を示す図である。図4は、半導体モジュール100の回路図である。なお、図1において図の見易さのために封止材30を透過して記載している。
本実施の形態1における半導体モジュール100は、制御信号を受信するフォトカプラ20と、フォトカプラ20を介して制御信号を受信するゲート駆動IC7と、ゲート駆動IC7によって駆動される少なくとも1つのスイッチング素子5と、を備え、フォトカプラ20は、上面電極および底面電極を備える発光素子21と、上面電極および底面電極を備える受光素子22と、を備え、発光素子21の底面電極が接合された第1のリードフレーム11と、受光素子22の底面電極が接合された第2のリードフレーム12と、ゲート駆動IC7が配置された第3のリードフレーム13と、フォトカプラ20、ゲート駆動IC7、少なくとも1つのスイッチング素子5および第1から第3のリードフレーム11,12,13を封止する封止材と、をさらに備え、第1の構造と、第2の構造との少なくとも一方をさらに備え、第1の構造は、第1のリードフレーム11の発光素子21の底面電極と接合された面の一部には、絶縁層31を介して第1の導電層が配置され、発光素子21の上面電極と、第1の導電層41がワイヤW1により電気的に接続される構造であり、第2の構造は、第2のリードフレーム12の受光素子22の底面電極と接合された面の一部には、絶縁層32を介して第2の導電層42が配置され、受光素子22の上面電極と、第2の導電層42がワイヤW2により電気的に接続される構造である。
図5は、本実施の形態2における半導体モジュール200の平面図である。図5において図の見易さのために封止材30を透過して記載している。半導体モジュール200において、第2のリードフレーム12に、実施の形態1(図1)における給電用リードフレーム14が一体化された構成となっている。半導体モジュール200において、第2のリードフレーム12以外の構成は実施の形態1(図1)と同じため、説明を省略する。
本実施の形態2における半導体モジュール200において、第2のリードフレーム12と、ゲート駆動IC7の電源電極72がワイヤW5により電気的に接続され、第2のリードフレーム12にはゲート駆動IC7の電源電圧が供給される。
図6は、本実施の形態3における半導体モジュール300の平面図である。図6において図の見易さのために封止材30を透過して記載している。半導体モジュール300において、第3のリードフレーム13がゲート駆動IC7のグランドと、フォトカプラ20の発光素子21のグランドを兼ねる構成となっている。
本実施の形態3における半導体モジュール300は、第1の構造を備え、第3のリードフレーム13はゲート駆動IC7のグランド電極73と接続され、第1の導電層41と、第3のリードフレーム13がワイヤW3により電気的に接続される。
図7は、本実施の形態4における半導体モジュール400の平面図である。図7において図の見易さのために封止材30を透過して記載している。本実施の形態4において、半導体モジュール400は、高電位側のスイッチング素子5と低電位側のスイッチング素子8を備える。高電位側のスイッチング素子5と低電位側のスイッチング素子8のそれぞれには、還流ダイオード6,9がそれぞれ逆並列に接続されている。
本実施の形態4における半導体モジュール400において、スイッチング素子は、高電位側のスイッチング素子5と低電位側のスイッチング素子8を含み、ゲート駆動IC7は、高電位側のスイッチング素子5と前記低電位側のスイッチング素子8を互いに逆のタイミングでオン、オフするハーフブリッジICである。ゲート駆動IC7をハーフブリッジICとすることによって、1系統の制御信号、即ち1つのフォトカプラ20で高電位側のスイッチング素子5と低電位側のスイッチング素子8の両方を駆動することが可能となる。従って、フォトカプラ20とゲート駆動ICをそれぞれ2つ備える構成と比較して、半導体モジュールの小型化が可能である。
本実施の形態5は、上述した実施の形態1から4のいずれかにおける半導体モジュール100,200,300,400を電力変換装置に適用したものである。電力変換装置の一例として、三相インバータの電力変換装置500について説明する。
本実施の形態5における電力変換装置500は、入力される電力を変換して出力する電力変換回路501と、電力変換回路501に制御信号を出力する制御回路502と、を備え、電力変換回路501は、半導体モジュール100,200,300,400のいずれかを少なくとも1つ備える。
Claims (7)
- 制御信号を受信するフォトカプラと、
前記フォトカプラを介して前記制御信号を受信するゲート駆動ICと、
前記ゲート駆動ICによって駆動される少なくとも1つのスイッチング素子と、
を備え、
前記フォトカプラは、
上面電極および底面電極を備える発光素子と、
上面電極および底面電極を備える受光素子と、
を備え、
前記発光素子の前記底面電極が接合された第1のリードフレームと、
前記受光素子の前記底面電極が接合された第2のリードフレームと、
前記ゲート駆動ICが配置された第3のリードフレームと、
前記フォトカプラ、前記ゲート駆動IC、前記少なくとも1つのスイッチング素子および前記第1から第3のリードフレームを封止する封止材と、
をさらに備え、
第1の構造と、第2の構造との少なくとも一方をさらに備え、
前記第1の構造は、前記第1のリードフレームの前記発光素子の前記底面電極と接合された面の一部には、絶縁層を介して第1の導電層が配置され、前記発光素子の前記上面電極と、前記第1の導電層がワイヤにより電気的に接続される構造であり、
前記第2の構造は、前記第2のリードフレームの前記受光素子の前記底面電極と接合された面の一部には、絶縁層を介して第2の導電層が配置され、前記受光素子の前記上面電極と、前記第2の導電層がワイヤにより電気的に接続される構造である、
半導体モジュール。 - 前記第2の構造を備え、
前記第2の導電層と、前記ゲート駆動ICの制御信号入力電極とがワイヤにより電気的に接続される、
請求項1に記載の半導体モジュール。 - 前記第2のリードフレームと、前記ゲート駆動ICの電源電極がワイヤにより電気的に接続され、
前記第2のリードフレームには前記ゲート駆動ICの電源電圧が供給される、
請求項2に記載の半導体モジュール。 - 前記第1の構造を備え、
前記第3のリードフレームは前記ゲート駆動ICのグランド電極と接続され、
前記第1の導電層と、前記第3のリードフレームがワイヤにより電気的に接続される、
請求項1から請求項3のいずれか一項に記載の半導体モジュール。 - 前記少なくとも1つのスイッチング素子は、高電位側のスイッチング素子と低電位側のスイッチング素子を含み、
前記ゲート駆動ICは、前記高電位側のスイッチング素子と前記低電位側のスイッチング素子を互いに逆のタイミングでオン、オフするハーフブリッジICである、
請求項1から請求項4のいずれか一項に記載の半導体モジュール。 - 前記少なくとも1つのスイッチング素子は、SiC又はGaNを含むパワー半導体を含む、
請求項1から請求項5のいずれか一項に記載の半導体モジュール。 - 入力される電力を変換して出力する電力変換回路と、
前記電力変換回路に制御信号を出力する制御回路と、
を備え、
前記電力変換回路は、請求項1から請求項6のいずれか一項に記載の半導体モジュールを少なくとも1つ備える、
電力変換装置。
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