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DRV8701: DRV8701 Idrive setting for Ti csd18540q5b

Part Number: DRV8701
Other Parts Discussed in Thread: CSD18540Q5B
FEF Gate charge total (10V) 41 ns
FET gate-to-drain charge 6.7 nC (from TI CSD18540Q5B)
Trise from / to  400 200 ns
Idrive 1 & 2  range 0.02 0.03 A
Table 5 IDRIVE select

Select IDRIVE as 25mA source, 50mA sink, HS OCP Monitor ON

Per datasheet I use the following setting.

Is this correct setting or should I choose something hight like 100/200mA I_drive like the new appnote?
Motor load can be 15A for short duration of a few minutes. I_chop set to 25A.

We are operating with battery so I try to limit current whenever possible

Thanks,

Khoi

  • Hi Khoi,

    25mA/50mA is a recommended starting point. Please note the statement in the datasheet:

    TI suggests to adjust these values in-system with the required external FETs and motor to determine the best possible setting for any application.

    You may find another setting fits your application better.