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DRV8243-Q1: MOTOR DRIVER SELECTION BASED ON CURRENT RATONG

MIDHUNA CHANDRAN
Prodigy 20 points
Part Number: DRV8243-Q1
Other Parts Discussed in Thread: DRV8245-Q1, DRV8145-Q1, DRV8262-Q1, DRV8262

Tool/software:

Hello,

For our application, where the power window motor operates with a stationary current of 8A and a stall current of 25A for 1-second duration. 

I have gone through the DRV82xx series in which DRV8245 can provide a maximum current output of 32A and DRV8243 can provide 12A.

Please suggest which part number can i consider for this application. 

Which current can i consider for the selection of motor driver IC?

  • 0
    TI__Mastermind 22150 points

    Hey Midhuna,

    Hmm 8A DC current is a challenge for integrated drivers.

    DRV8245-Q1 can only do 5.9A continuous:

    You could potentially use 2x DRV8145-Q1 - this is a 1/2 bridge driver, so each driver could only drive the BDC motor one direction.  But you could use one driver for each direction.  

    Other than that, I would recommend using DRV8262-Q1 in the DDV package.  DDV package is a flip-chip version so that an external heatsink can be attached, resulting in much better continuous DC performance. 

    Our datasheet only has the transient current capability for the DDW package of DRV8262, but the DDV package typically can achieve double or more the performance of the DDW package. So I think DRV8262-Q1 would easily be able to do 8A in the flip-chip version in Single H-Bridge mode.  You're welcome to order the DRV8262VEVM to test it out

    Best,

    Jacob

  • 0 in reply to Jacob Thompson
    Prodigy 20 points

    Hello,

    Thank you for the information!

    DRV8262-Q1 may be a good solution. But I mentioned that the stall current is about 25 A for a 1-second duration.

    Can I consider the same part for this? If not, please suggest a part with an above-25A rating.

    If we use 2x DRV8145-Q1, it can also provide only 24A.

    Please suggest a good solution.

  • 0 in reply to MIDHUNA CHANDRAN
    TI__Mastermind 22150 points

    Hey Midhuna,

    Hmm using the DDV package of DRV8262 in Single H-Bridge mode might be able to handle that, though you'll need to test that out yourself with the EVM.   

    Those are our highest current integrated motor drivers, after those you'll have to look into a gate driver with external MOSFETs, such as DRV8706-Q1 

    Best,

    Jacob