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  • Galvanic isolation for IGBT-Driver
    applications in the high power range, the complexity of the IGBT control circuit is in fact much higher than in the case of the control of a small MOSFET.
  • Expanding the Safe Operating Area of Polypropylene Dielectric IGBT Snubber Capacitors
    Important developments of IGBT's (Insulated Gate Bipolar Transistors) in recent years have been focused on increasing power handling capability and increasing reliability including short circuit tolerance. Snubber capacitors have also undergone changes in construction enabling increased power
  • Gate Drive Optocoupler Provides Robust Insulation in IGBT Destructive Tests
    Avago Technologies gate drive optocouplers are used extensively to drive IGBTs in applications such as motor drives and solar inverters. Optocouplers are a proven technology to provide reinforced galvanic insulation for high voltage protection between IGBTs and control circuits. They are also used
  • Brushless DC Motor Control Using PIC18FXX31 MCUs
    with respect to the power ground (negative of DC bus). The feedback interface circuit is powered by +5VA, while +15VA supplies power to the IGBT drivers located inside the Integrated Power Module (IPM).
  • Optocoupler Performance Comparison: NEC PS9552 vs. Avago HCPL-3120
    Both the PS9552 and HCPL-3120 are optically-coupled isolators that employ a GaAlAs LED on the input side and a photo diode, a signal processing circuit, and a power output transistor on the output side. They feature large peak output current, fast switching speeds, undervoltage lockout protection

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