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The maximum operating frequency of the STB9NK90Z is 100 kHz, but it can be operated at higher frequencies with reduced voltage ratings.
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To ensure reliability in high-temperature applications, it is recommended to derate the voltage and current ratings according to the temperature derating curve provided in the datasheet, and to ensure proper thermal management and heat sinking.
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The recommended gate drive voltage for the STB9NK90Z is between 10V and 15V, with a maximum gate-source voltage of ±20V.
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To protect the STB9NK90Z from overvoltage and overcurrent, it is recommended to use a voltage clamp or a transient voltage suppressor (TVS) to limit the voltage, and to use a current sense resistor and a fuse or a current limiter to limit the current.
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The recommended PCB layout and thermal design for the STB9NK90Z involves using a multi-layer PCB with a solid ground plane, placing the device near a heat sink or a thermal pad, and using thermal vias to dissipate heat.
