HVIC用SOI型1200Vレベルシフト素子の開発

  • 白木 聡
    Advanced Electric Technology R&D Dept., Powertrain Control Systems Business Group, DENSO CORP.
  • 山田 明
    Semiconductor Process R&D Dept., DENSO CORP.

書誌事項

タイトル別名
  • Development of 1200V Level Shifter Devices on SOI for HVIC
  • HVICヨウ SOIガタ 1200Vレベルシフト ソシ ノ カイハツ

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抄録

We have developed monolithic SOI type 1200V level shifters for inverter driver ICs, which are based on a new design concept of cascaded 120V LDMOSFETs. In order to clarify the problem of blocking voltage lowering against a high dV/dt surge, we have analyzed transient behavior of monolithically cascaded LDMOSFETs by numerical simulations and experiments. As a result, we have established a new design concept including device layouts and circuits, which minimizes breakdown voltage lowering at very high dV/dt of 20kV/μs. This concept is expected to be a key technology enabling 1200V SOI inverter driver ICs for harsh applications such as automotive electronics.

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