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This paper addresses various applications where NEC/CEL optocouplers offer galvanic isolation for driving MOSFET / IGBT devices in industrial applications including general-purpose inverters, AC servos power switching, home appliances and motor control applications....

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Both devices feature large peak output current, fast switching speeds, undervoltage lockout protection and high common mode transient immunity, but the NEC device offers additional benefits. This App Note provides a detailed comparison....

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Reviews the characteristics and technical requirements of using an NEC high speed optocoupler to gate drive an IGBT or Power MOSFET....

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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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