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ISO5451-Q1: High frequency operation of ISO5451-Q1

Part Number: ISO5451-Q1
Other Parts Discussed in Thread: ISO5451

Hi ,

Is this driver is suitable for switching frequency upto 100kHz.

It is  shown in the datasheet  supply current Vs input frequency graph upto 300kHz. Is this driver is capable of switching at 100kHz ?

Please advice.

  • Hi Arunava,

    The PWM frequency of ISO5451 is limited by the power dissipation which relates to the gate charge of the power transistor, supply voltage, PWM frequency, and ambient temperature. The PWM frequency can go beyond 100kHz if thermal allows. Please also note that there is a under voltage lock out function on VCC2 and VEE2, which makes ISO5451 be more suitable to drive IGBTs and SiC MOSFET.

    With Regards,

    Xiong