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Semiconductor device, power conversion device, driving device, vehicle, and elevator

  • US 10,483,839 B2
  • Filed: 02/14/2018
  • Issued: 11/19/2019
  • Est. Priority Date: 11/07/2017
  • Status: Active Grant
First Claim
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1. A semiconductor device comprising:

  • a first capacitor having a first end and a first another end, the first end for electrically connecting to at least one of a first electrode and a second electrode of a transistor having the first electrode, the second electrode, and a gate electrode;

    a first diode having a first anode and a first cathode, the first anode electrically connected to the first another end;

    a second capacitor having a second end and a second another end, the second end electrically connected to the first cathode;

    a sample and hold circuit electrically connected to the first cathode and the second end;

    a switch electrically connected in parallel with the second capacitor between the second end and the second another end; and

    a second diode having a second anode and a second cathode, the second cathode electrically connected to the first another end and the first anode,wherein a power supply voltage VDD of the transistor, a capacitance C1 of the first capacitor, and a capacitance C2 of the second capacitor satisfy 15V≤

    (C1VDD)/(C1+C2).

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