HD3SS3220: HD3SS3220, TUSB211, TPS62082

Aleks

Part Number: HD3SS3220
Other Parts Discussed in Thread: TPS62082, TPS62080

Hello!

I need help for schematic review.

My application will works in UFP mode. I have a little confused about Fig.12 in the HD3SS3220 datasheet and "UFP dongle evaluation module user guide" Figure 6 (http://www.ti.com/lit/ug/sllu241a/sllu241a.pdf?ts=1591207700675) about pins: ID, VCONN_FAULT_N, CURRENT_MODE - does they need to be pulled up or floating?

This will work as passive device (in dead battery mode)

My schematic:

In schematic one error in value - U1 TPS62080 is TPS62082

Many thanks

Regards,

Aleksejs

over 5 years ago

0 Aleks over 5 years ago

Prodigy 60 points

Also I didn't understand about datasheet DIR pin specification what say DIR pin maximum rating is VCC33 +0.3 V (first screenshot)

And in "UFP dongle evaluation module user guide" DIR pins is pulled-up to the 5v (second screenshot).

0 Brian Zhou over 5 years ago in reply to Aleks

TI__Guru**** 158205 points

for 3220, it's better supply VDD5 with seperate supply , not from Vbus. You can float those pins if not being used, like ID, Vconn.

DIR pin is 3.3v.

0 Aleks over 5 years ago in reply to Brian Zhou

Prodigy 60 points

Hi Brian,

Thanks for clearing about DIR pin voltage.

I do not have separate supply, this device will work for USB hub, so it's will be powered from host.

Am I correct what this will be "Dead battery mode" in my situation?

Regards,

Aleksejs

0 Brian Zhou over 5 years ago in reply to Aleks

TI__Guru**** 158205 points

ok, that will work. its better to add cap on EN_CC.

also adding 330nf on RX1/RX2 and remove C86/C87 on RX

0 Aleks over 5 years ago in reply to Brian Zhou

Prodigy 60 points

Hello Brian!

Thanks for review.

Will be good with 47uF cap on EN_CC as in UFP dongle Design Note #3?
Then I also need to remove also R40-R43 with C86/C87 on RX?
330nF on RX1/RX2 also use 0201 size as for TX1/TX2 lines? Why I need to put caps also on RX1/RX2?This is some new suggestions?

0 Brian Zhou over 5 years ago in reply to Aleks

TI__Guru**** 158205 points

Will be good with 47uF cap on EN_CC as in UFP dongle Design Note #3? (maybe 1uf)
Then I also need to remove also R40-R43 with C86/C87 on RX? (yes, it's only needed at connector side.
330nF on RX1/RX2 also use 0201 size as for TX1/TX2 lines? Why I need to put caps also on RX1/RX2?This is some new suggestions? ( this is to prevent high common mode voltage from other side of the Type-C connector)

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HD3SS3220: HD3SS3220, TUSB211, TPS62082