TPS25751: Guidance Needed: Generating .bin for TPS25751 Without TI Hardware

Hello Abhijit,

Thank you for reaching out.

ABHIJIT KUMAR said:

The “Build Project / Generate Binary” option is not available in my installation 

From my understanding you want to generate a full flash binary using the USBPD Application Customization Tool. First, make sure you complete the questionnaire.  Click on the "Export" drop down located in top right corner of the customization tool. If the drop-down options are grayed out, you may not have all the questions answered.

ABHIJIT KUMAR said:

I am currently using a third-party USB-to-I²C bridge (FT200XD / CJMCU-200) which the tool does not recognize.

Unfortunately, the tool will not be able to recognize a third-party bridge device. 

ABHIJIT KUMAR said:

The tool shows an error: “Error: failed to connect: no port found” — preventing me from generating the output file.

You are able to generate an output file without being connected to the hardware.

To fix the "Error: failed to connect: no port found" message navigate to Options -> Serial Port Settings. Ensure you are connected to the desired COM port. Reconnect the Hardware connection by double clicking the link image in the bottom right corner. You should receive a "Hardware Connected" confirmation in the bottom right corner. 

ABHIJIT KUMAR said:

GPIO 0  will sense 3VDC to take the decision.

The type of GPIO trigger events is fixed for this device. For the design choice stated above, can you please clarify which of the GPIO event you intend to use? The event names can be found in the TPS25751 TRM Table 5-2.

Below is the TRM:

TPS25751 Technical Reference Manual (Rev. A)

Thank you, 

Katilynn

Thank you for your reply -- 

Yes when i click Export - drop-down options are grayed out. 

I do not have "USB2ANY" OR the evaluation board of TPS25751.

I have the PCB of which i have shared the schematic.

"GPIO event you intend to use" - Barrel_Jack_Event 

and

"GPIO Event Polarity as" - Inverted Event 

Kindly let me know if any other input is required

Request to please help -

Hello Abhijit,

Thank you for your response.

Since the drop-down options are grayed out, we need to make sure all questions are filled in. Are you needing clarification on how to answer specific questions on the questionnaire? 

ABHIJIT KUMAR said:

I do not have "USB2ANY" OR the evaluation board of TPS25751.

To reiterate, you do not need to have your hardware connected to the customization tool in order to export a binary file. 

ABHIJIT KUMAR said:

"GPIO event you intend to use" - Barrel_Jack_Event 

and

"GPIO Event Polarity as" - Inverted Event 

To configure this GPIO event with our tool:

1. Enter Advance Configuration mode

2. Scroll down to IO Config (0x5c0)

3. Click on GPIO 0

4. Select "barrel_jack_event (43)" for the GPIO Mapped Event

5. Select "Inverted Event" for the GPIO Event Polarity

For the GPIO event, are you wanting to use GPIO0 or GPIO1? In the schematic your GPIO0 is connected to GND and GPIO1 has connections for a trigger event.

Thank you,

Katilynn

Thank you very much for your reply  ... 

"we need to make sure all questions are filled in" - Your suggestion worked now the drop-down options are visible 

"For the GPIO event, are you wanting to use GPIO0 or GPIO1"  - Yes we are using GPIO1 . 

Please confirm once i do your suggested setting "To configure this GPIO event with our tool:"

When GPIO1 Gets input of 3VDC when 9VDC is present (With R3 and R4 divider) , TPS25751 will change the PDR role from source to sink and Pin 21 Gate_Vbus will be set low.

GPIO1 > 3 V (HIGH) ⇒ PD Sink

GPIO1 = 0 V (LOW) ⇒ PD Source

Requested to please suggest 

Hello Abhijit, 

Thank you for your reply.

I will get back to you on the confirmation of the trigger event behavior by then end of tomorrow. 

Thank you,

Katilynn 

Dear Katilynn , 

Thank you very much for your mail , 

When " a singular power role swap occurs"

What will be the condition of ??Pin 21 Gate_Vbus will be set low?? Please answer 

"Unfortunately, there is not a mapped GPIO event that can allow for this toggle between the power roles. " --> Can use Other free GPIOs - Say GPIO2

When GIO2 is LOW - GPIO2 = 0 V (LOW) ⇒ PD Source

As now there is no MCU , only EEPROM .... if it will be required then there will be total design change.

Requested to please answer.

Thank and Regards,

Abhijit Kumar 

Hello Abhijit,

Unfortunately, there is not a mapped GPIO event that can allow for this toggle between the power roles. We will look into the feasibility of adding this feature.

The TPS25751 will be in dead battery mode upon powering up from VBUS only (ie. VIN3V3 is unavailable). When the Barrel_Jack_Event occurs the dead battery flag is cleared on the GPIO rising edge allowing for the power role swap to occur.  This event is typically used in applications where VBUS power is available prior to VIN3V3.

ABHIJIT KUMAR said:

What will be the condition of ??Pin 21 Gate_Vbus will be set low??

Gate_Vbus is set low temporally as the source stops supplying VBUS to the sink. Once ports do the power role swap, the new source will apply voltage over VBUS and GATE_Vbus will be set high at the necessary voltage on VBUS.

Thank you,

Katilynn

Dear Katilynn , 

I think that is am left with no other option , I will have to add MCU in our current design (OR any other suggestion you can make)

Before that please answer my below query -

Can use Other free GPIOs - Say GPIO2

When GIO2 is LOW - GPIO2 = 0 V (LOW) ⇒ PD Source

And GPIO1 will control = GPIO1 = 3V (High) ⇒ PD Sink

Thanks and Regards,

Abhijit Kumar 

Dear Katilynn , 

In that case we can plan to use , Arduino Uno(ATmega328P) in our design to configure the TPS25751 , for preferred role swapping .

I there any ready code for Arduino interfacing with TPS25751

Thanks and Regards,

Abhijit Kumar

TI USA is on holiday today, please expect delays in response