BQ40Z50: The width of the tracks on the PCB board for driving the gates of power transistors.

Mike Ipa

Part Number: BQ40Z50

Tool/software:

Hello! Please tell me what width is best to make the tracks on the PCB board 
for controlling the gates of power transistors - wide or narrow?

10 months ago

0 Anthony 10 months ago

TI__Mastermind 28480 points

Hi Mike,

Since the transistors are in the high current path of the device, wide traces should be used. In our EVM boards, we use planes for these connections and would recommend doing this as well:

Regards,

Anthony

0 Mike Ipa 10 months ago in reply to Anthony

Prodigy 40 points

I mean the width of the tracks going from the bq40z50 chip to the gates of the transistors. 
Does their width matter?

+1 Anthony 10 months ago in reply to Mike Ipa

TI__Mastermind 28480 points

Hi Mike,

I believe this current design should be ok, please allow us to confirm this and get back to you.

Regards,

Anthony

Power management

Power management forum

BQ40Z50: The width of the tracks on the PCB board for driving the gates of power transistors.