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UCC23313-Q1: High Side MOSFET driver design

Part Number: UCC23313-Q1
Other Parts Discussed in Thread: CSD19536KTT, SN6501, , TPSI3050-Q1

Dear TI team,

i am planning to design High side MOSFET driver for EV Battery pack with help of CSD19536KTT, UCC23313-Q1 & SN6501.

i want to get the block diagram reviewed by TI expert . Pls ahre email ID so that i can share block digarm for review. 

Rami Reddy// email:  ramireddy@sunmobility.com

  • Hi, Rami,

    I will send you a friend request and you can send me the file via DM. 

    Best regards,

    Don

  • I ahve shared block diagram Via DM. pls check and provide your valuable feedback. We want fast turn ON & OFF, thats why we decided to go for UCC23313-Q1. 

  • Hi, Reddy,

    Thanks for sharing. Your concept looks solid. My only suggestion is to put a gate resistor in series with each of the parallel fets. This will introduce some impendence between FETs and prevent possible parasitic oscillation between them. Here is an App Brief written by my good friend who describes it in more detail: www.ti.com/.../slvaf39a.pdf

    If this answered your question, please press the Green button.

    Best regards,

    Don

  • Dear Don
    Thanks for your feedback. We will add individual Gate resistor. 

    In the block diagram : I have considered Common Source point of Back to Back MOSFETs i have used as a reference ground of an isolated supply.

    Will that be ok considering all these worst cases
    1. Common source is floating point. Common source point shifts from 0V to 60V while MOSFET is turning ON. 

    2. Output of Back to Back MOSFETs is connected to Charger/Motor controller. Charger voltage varies from 40V-60V so as Battery pack voltage also. But whenever we want to turn ON MOSFETs, we set the charger voltage to less than Battery voltage for smooth charge transfer. 

    do you forsee any problem to MOSFET Gate driving  with all these ??

  • Hi, Rami,

    Yes, this should work as you intend.

    It may not be fast enough for you, but a friend of mine is making a part that might be perfect if it's fast enough: tpsi3050-q1

    Best regards,

    Don