• State Resolved
  • Locked Locked
  • Replies 3 replies
  • Subscribers 64 subscribers
  • Views 189 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

Assistance in selection of N-channel MOSFET gate driver for ON/OFF switch

TI-CSC
Genius 13095 points
Other Parts Discussed in Thread: BQ76200

Hello E2E Experts,

Good day.

We want to start design of a software controllable (through MCU) FET based switch in order to control the power supply from a 6S battery pack to ESCs. I've attached block diagram of our application for more information. The gate drive should be capable of high-side switching (ON and OFF), should have soft-start so that it turns on and off in a delayed and ramped up manner. Finally, it should be capable of driving MOSFET at 12V level and state of switch should be MCU GPIO pin controllable (3.3V and 5V logic).

Thank you in advance for your help.

Regards,

CSC

  • 0
    TI__Mastermind 38500 points

    Hello Jonard,

    Thanks for the inquiry. I am the applications engineer for the FET product line and I think this thread should be assigned to BMS or HPD applications teams. Are you aware of the bq76200 high side gate driver? This sounds like what you may be looking for in your application. I am going to reassign this thread to BMS-BGP as this is their product.

    Best Regards,

    John Wallace

    TI FET Applications

  • 0 in reply to John Wallace1
    TI__Genius 13095 points

    Hello John,

    Thank you for the response.

    I am attaching once again the block diagram. I hope it helps.

    7587.Block_Diagram_FET_control.pdf

    The concept is at a primitive stage and one IC I've found pretty suitable for my application is LTC7001. You can use that as a reference for selecting the kind of features I'm looking for in my system.

    Thank you in advance as always.

    Regards,

    CSC

  • +1 in reply to TI-CSC
    TI__Guru* 81035 points

    Hi CSC,

    The only device we have from the battery product line is the BQ76200 - you can take a look at this to see if it can work for your needs. It does lack some of the features you mention like soft-start. It does have support for a pre-charge FET which may be useful.

    Best regards,

    Matt