BQ40Z50-R1: Drive MOS Capability

Sunrain

Part Number: BQ40Z50-R1

Hi, I have two questions.
1. What is the driving current of DSG and CHG, and how many pairs of MOS can be supported.
2. My continuous current is 25A, I don't want to scale the current. Can I set both OCD1 and OCD2 to 32A/5S?

over 2 years ago

0 Wyatt Keller over 2 years ago

TI__Guru** 102355 points

Hello Jingming,

Please refer to other threads which have answered similar questions for 1, the drive capabilities are in the datasheet.

https://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1078513/bq40z80-mosfet-drive-charge-pump/3992198?tisearch=e2e-sitesearch&keymatch=bq40z50%25252525252525252520FET%25252525252525252520drive%25252525252525252520strength#3992198

25A should be well within the regular setting for OCD protections, they should not need to do any current scaling.

Sincerely,

Wyatt Keller

0 Sunrain over 2 years ago in reply to Wyatt Keller

Intellectual 530 points

Hello,

If all my protection currents are set to 32A, will they affect each other?

thanks

0 Wyatt Keller over 2 years ago in reply to Sunrain

TI__Guru** 102355 points

Hello Jingming,

It should not affect the operation of the protections, they will still perform how it is specified in the TRM.

Sincerely,

Wyatt Keller

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BQ40Z50-R1: Drive MOS Capability