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BQ76930: parallel FET.

Andrew Buckin
Expert 2130 points
Part Number: BQ76930
Other Parts Discussed in Thread: TIDA-00449

Hello Everybody,

I'm developing the 6S BMS BQ76930. I saw on the site of TI a document with a recommendations on parallel connection of FET.(charge, discharge).
Now I can't find this document.
Please help me to find this document.

BMS have to be a ring. I want to use the surface more efficiently.

Thank you.

Andrew.

  • 0
    TI__Guru 54715 points
    Hi Andrew,
    I'm not sure I understand correctly.
    The TIDA-00449 uses parallel FETs and its design guide section 4.1.3.2 has a brief description. Most FET manufacturers have a writeup about paralleling FETs and recommend some separate gate resistance.
    If you are considering parallel charge and discharge paths, this e2e post may be helpful. e2e.ti.com/.../1348804 Connecting a discharge path at the common drain of the low side FETs retains discharge protection for the charge path, but the discharge path would not be protected against charge.