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UCC20520: UCC20520 isolated driver for 15 phase inverter

Hassan Moussa
Prodigy 10 points
Part Number: UCC20520

Hi,

I am using UCC20520 isolated driver for 15 phase inverter.

So I am wondering if I can design each driver (15 driver pcb) with its own supply and its input filter or use a power managment board able to provide  filtered 12V and 5V for the 15 drivers

Thanks in advance,

  • 0
    TI__Expert 3575 points

    Hi Hassan, 

    Thank you very much for reaching out. If your grounds are the same and if the supply meets the sourcing requirements for your drivers, then the supply can be use for multiple drivers. Note that the high side of the drivers cannot use the same power supply since the reference is not the same for all the drivers. 

    Lets us know if  this answers your thread 

    Best 

    Francisco Lauzurique 

  • 0 in reply to Francisco Lauzurique
    Prodigy 10 points

    Thanks Francisco for your reply.

    In fact I am using an isolated DC/DC converter for each UCC20520 driver to supply the VDD.

    For the VCC supply the ground is the same, I will need a buck converter to step down a 12V battery voltage to 3.3V or 5V DC @ 3A (aprox). I will need an EMI filter for the input.

    Is there a specific PMIC for this purpose?

    Best Regards,

    Hassan

  • 0 in reply to Hassan Moussa
    TI__Expert 3575 points

    Hi Hassan, 

    If a step down of the voltage is needed I would recommend an LDO or other kind of voltage regulator with a low ripple and low noise. 

    In this case I would not be able to recommend a specific device to be use since I am not aware of the specific market you are targeting. 

    However, I recommended visiting our power management section https://www.ti.com/power-management/overview.html

    Our filters are very easy to navigate having all the requirements for your system.  In addition, feel free to reach to the LDO group and ask any specific questions about any devices you are interested. 

    Let us know if this answers your thread 

    Best 

    Francisco Lauzurique