TPS65994AD: Design question

Hi,

Please use the 256 kb EEPROM as the full binary generated from GUI includes base FW binary not just the user config.

Tom Lin said:

Have any strapping or GPIO can support PDO?

I am not understanding this question, are you looking for functionality that force negotiate a certain PDO?

Regards

Hi Tommy

I don't want to use I2C or EEPROM to Programming TPS65994ADYBGR because I only have config sink PDO 15V 3A requirement.

TPS65994ADYBGR could do it? 

If possible please share the method about GPIO setting or other way for me.

thanks

Regards

Hi,

Can you provide more detail on what is the requirement of the system?

Using TPS65994AD just to only sink 5V3A and 15V3A seems like an overkill.

There is also no way to use GPIO to force negotiate 15V3A as this violates PD spec. Connection always starts with 5V3A then negotiate to 15V3A.

Regards

Hi Tommy

We have a control board need be power by USB-PD Adapter. 

Spec requirement:

1. UFP only
2. Dual port CC
3. Sink PDO : 15V 3A
4. No data requirement

So if power delivery negotiate can be lockdown in TPS65994ADYBGR instead of "EEPROM" could saved PCB size.

Do you have any advice for this?

Thanks

Hi,

I think it is possible if you set the device dead battery mode to NegotiateHighVoltage.

Regards

Hi Tommy

USB-PD Adapter have these output characteristics. I think the behavior in note.  Please correct me if there is any mistake.

5V 3A-->(Need PD FW to Negotiate)

9V3A-->(Need PD FW to Negotiate)

12V3A -->TPS95994 no support

15V3A --> Design requirement (Need PD FW to Negotiate)

20V3A-->Set dead battery mode to NegotiateHighVoltage.(Unnecessary I2C or EEPROM to Negotiate)?

Thanks

Hi,

12V3A can be supported but you need a sink PDO for 12V3A in the project setting.

Setting the device dead battery mode to NegotiateHighVoltage will make the device only negotiate 20V3A (since this is the highest capability the adapter can offer).

Regards

Hi Tommy

Could you show me how to setting 12V3A in TPS65994AD? 

Thanks

Hi,

You will need to request for the configuration GUI first.

Please go to the device product page, request the GUI, and generate a binary that support 12V3A from the GUI.

Regards

Hi Tommy

So, I need EEPROM flash to access the GUI setting right?