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ISO7341C: VCC2=310V GND2=305V. Can it work

Part Number: ISO7341C

Dears,

Our customer are using ISO7341C, he want to use following schematic, the voltage of VCC1=3.3V, GND1=0V, VCC2=310, GND2=305V, the reference voltage of OUTA, OUTB, OUTC and IND are GND2=305V. The chip could work or not? 

Regards,

Ricardo

  • Hi Ricardo,

    Just to confirm. The potential difference between GND1 and GND2 will be 305V, but the potential difference between pins on the same side with respect to corresponding ground will not be exceeding 5V.

    If this is the case, the digital isolator should work fine because the 305V will come across the isolation barrier which is designed to handle high voltages.

    Regards,
    Anand Reghunathan

  • In reply to Anand Reghunathan:

    Hi Anand,

    That is to say that  the difference voltage between IND(pin 11) and OUTD(pin 6) will be 305V,  but the device could handle it. The Block Diagram likes below.

    Regards,

    Ricadro

  • In reply to Ricardo Li:

    Hi Ricardo,

    Yes, the block diagram looks OK. This should work fine.
    Please let me know if there are any other concerns.

    Regards,
    Anand Reghunathan

  • In reply to Anand Reghunathan:

    Hi Anand,

    OK! Thank you for your help.

    Regards,
    Ricadro

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