TPS65987D: dynamically switch source and sink in DRP mode.

Thanks! I downloaded the configuration software. I will order an EVM board, but I can't find any PCB reference files for the TPS25730 and TPS25751. Are there PCB/Schematic files I can download and use with Altium?

edit: TPS25751EVM is out of stock everywhere.

Individual PCB reference files for the TPS25730 and TPS25751 that I can combine for my application would be really helpful. I see the schematic/pcb images in the TPS25751EVM pdf, but I would like something that I can just import into Altium if possible.

Since I am not doing any data or battery charging, it looks like this is close to what I require (grayed areas not needed)?

Hi Michael, 

A couple questions on the block diagram: 

1- I see that the EEPROM block is greyed out. How do you plan on loading the configuration onto the TPS25751? Will there be an MCU in your design?

2- Could you elaborate more on your device requirements (5V/100mA)? 

• Is it being powered from the Ipad? or from the PD controller's LDO3v3?
• What is this device?

Please accept my friend request so that I can share Altium files with you offline. 

Best Regards, 

Aya Khedr

1. I'm still figuring out the device works. If EEPROM is required and part of the reference design then I will just include it. 
2. My device if fairly simple, but includes a 3v3, 100ma COB-LED and an ESP32 processor. That is the majority of the active components.
3. My device requires 3v3, 100ma. I am open to whatever the best option is. I was thinking power would come from the 5v iPad, but if PD controller LDO3v3 is a better option then I would do that. My device must work while the ipad is in source mode, but if my device also worked while the iPad is charging that would be a bonus.
4. This is our first venture into using USBC as a power source, so it's new to everyone here as to what are the options.

Hello,

Thank you for your inquiry. TI US is closed for Christmas. Please expect delayed responses this week.

Merry Christmas and Happy Holidays!

That sounds good.

1. Is the 5v rail PP5V?
2. Is P3V3 the 3v3 rail?
3. "when sourcing and sinking" is great. If I can have both, no reason not to.
4. I can't find the Altium files, but I'm not sure where to look? I accepted the friend request previously.
   

   Aya Khedr said:

   Please accept my friend request so that I can share Altium files with you offline. 

   I'm guessing my TPS25751 configuration file would look like the following:

   {
     "questionnaire": {
       "device": "TPS25751",
       "toolBuildVersion": "1.0.2",
       "answers": [
         null,
         1,
         4,
         0,
         0,
         0,
         3,
         0,
         0,
         1,
         1,
         null,
         0,
         0,
         0,
         0,
         0,
         0,
         0
       ],
       "vendorId": "0000",
       "productId": "0000",
       "version": "1.0.0.2"
     }
   }

Hi Michael, 

1. Yes PP5V is the 5V input to the device's internal power path (source only)
2. Yes P3V3 is the 3V3 input to power the IC
3. Great. My recommendation would be to ensure that the external DCDC's output voltage/current is sufficient to power your device and the PD controller. 
4. Thank you for accepting the request, I will send them to you early next week. 
5. In the configuration file provided, the source capabilities is set to a maximum of 100W. Do you require 100W sourcing to the Ipad? 
   
   1. The TPS25751D has a 5V/3A internal power path (max 15W standalone). If you require sourcing >15W, an external DCDC would be needed to generate higher voltage/current levels. 

Best Regards, 

Aya Khedr 

Aya Khedr said:

Yes PP5V is the 5V input to the device's internal power path (source only)

will I also get a 5v sink from the ipad when the external usb is disconnected? The goal is to have uninterrupted 5v whether external usbc is connected or not.

Aya Khedr said:

ensure that the external DCDC's output voltage/current is sufficient to power your device and the PD controller. 

my device only requires 3v3 @150mA

Aya Khedr said:

In the configuration file provided, the source capabilities is set to a maximum of 100W. Do you require 100W sourcing to the Ipad? 

1. The TPS25751D has a 5V/3A internal power path (max 15W standalone). If you require sourcing >15W, an external DCDC would be needed to generate higher voltage/current levels. 

I am targeting the ipad mini6. I believe charging requirements for the ipad mini6 is 5v/3A.

The TPS25751EVM appears to be back in stock. Please let me know when the reference files are available.

For production it would be better not to have to flash each TPS25751. Since I am not using a TI battery charger, will I need to flash the TPS25751? If flashing required for "dual role" or is that the default?