TUSB4020BI / Pin configuration

ACGUY

Other Parts Discussed in Thread: TUSB4020BI

Hi all,

Please let me know about pin configuration of TUSB4020BI.
My customer made a trial board for test of the device.
However, they was not able to make it operate well.

They said,
- Can't intercommunication UP to Port_A, and Port_B.
- Can't power management for Port_B.

Could you see the attached schematic and point out the mistake for me?

Kind regards,
Nagai

5078.Schem_TUSB4020BI.pdf

over 9 years ago

0 Diego Cortes over 9 years ago

TI__Mastermind 36085 points

Hello,

A few comments regarding the schematic:

We recommend 18pF for C325 & C326
Regarding the power control, I need to know which power switches are you using, it should be an issue of the power control polarity

Regards,

Diego.

0 ACGUY over 9 years ago in reply to Diego Cortes

Guru 11170 points

Hello Diego,

Thank you for reply.

IC306 is competitor's load switch. (www.rohm.com/.../BD2246G)
I confirmed the schematic and load switch, however I was not able to find the mistake points.

I look forward to a reply from you.

Regards,
Nagai

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TUSB4020BI / Pin configuration