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ISO5452: What is the difference between ISO5451, ISO5452 , ISO 5852S for IGBT drive ?

Tony Philip45
Intellectual 755 points
Part Number: ISO5452
Other Parts Discussed in Thread: ISO5451, ISO5852S

Hi,

We wanted to implement an isolated IGBT driver with miller clamp to reduce turn-on of IGBT due to Ccg triggering. I was going through the datasheets of  ISO5451, ISO5452, ISO 5852S and they seem very similar. I can't figure out any differences here.

Can someone help me understand how they differ?

Regards,

Tony

  • 0
    TI__Expert 4875 points

    Hello Tony,

    The difference between ISO585x and ISO545x is the Peak Working Voltage Isolation Rating, denoted by V_IORM in the datasheet (2121V and 1420V respectively). The difference between ISO5x51 and ISO5x52 is the minimum VCC supply voltage (3V or 2.25V respectively). Finally, the 'S' in ISO5852S denotes that this part has a split output (OUTH and OUTL) versus single output (only OUT) for the driver stage. The split output is beneficial to separately optimize gate resistance and layout for the turn-on and turn-off paths. All of the ISO5xxx parts have the Miller Clamp pin which you are looking for.

    Correction: ISO5452 and ISO5852S are both split-output.

    Please let us know if you have other questions!

    Regards,
    Audrey