TPS650830: May you pls help check TPS650930 circuit and layout?

help to attach customer schematic and layout.

PMIC_TPS650930ZAJ.PDFhttps://e2e.ti.com/cfs-file/__key/communityserver-discussions-components-files/196/VULCAN_2D00_MB_5F00_V01_2D00_0922.7z

Hi Sir

Add questions as belo:

The reference design of TPS650930 have some issue like below:

1. We can’t find ECVCC power source in attached reference schematic (red blocks) , how to connect it ??

   Can you please help release ECVCC power source information and schematic??

2. If we need add power source for ECVCC, which TI power switch do you suggest??

             And may we know V5A_PG signal from?

                                                   Bogey

Hi, Mr. Chen,

    TPS650830 is not my device, but TPS650930 is still mine. I'll give you PCB layout feedback by the COB of this Friday (Dallas time).

    Below are answers/comments for your questions/concerns about the reference design of TPS650930:

1. Since the reference design connects ECVCC pin L1 to LDO3V, so, LDO3V is its power source. 
2. Connect ECVCC pin L1 to LDO3V directly. 
3. V5A_PG signal is a typo, it should be V5ADS3_PG.

Hi Phil

there still have some questions as below where connect to:

Detail as attached file. and may you can help check layout?

1. V18U25U_ENIN (C11)

      2.   V105S (J10)

      3.   PGG (F3)

      4.  PGH (M6)

     5. VCCST_PWRGD(E4)6763.TPS650930.docx

Hi, Mr. Chen,

  The reference design as its name "TPS650930ZAJ_CFL_CML_CNL_ICL_WHL Reference Design" says, it's a reference design for all similar processors CFL , CML, CNL, ICL and WHL. For more details schematics design, we need exact processor part and configurations that customers are going to use in their applications. 

  Can you tell more details about the processor and configurations that customers are going to use in their applications? 

  Please also ask customers to check/ review their schematics/PCB layout with Intel's apps engineer.

Hi Phil

We will info customer.

And another question as attached file, may you pls help?

The customer are using TPS650930 in WHL_0927.docx

Hi, Mr. Chen,

   Those comparators are designed for monitoring some power rails' level; some of them may not required for WHL-U platform. Would you please ask customer to reference to Intel's document with "Unique ID: 575412; title is "Whiskey Lake and Coffee Lake Platform Design Guide"?

  I'm still working on the PCB layout review; may not able to send you feedback by the COB today as planned. I'll continue this weekend; trying to send you coming Monday morning; and then digging into more details on the reference design to give more and better answers. 

Hi, Mr. Chen,

 It's confirmed that the PCB file is not completed as showing by attached picture. Please ask customer sending a completed file for review. 

Hi, Mr. Chen,

  My answers are listed below:

1. The PCB parts placement should be also following its datasheet "Layout Guidelines" section. 
2. Please correct the reference design according to datasheet: connect VPROGOTP pin to LDO5V.

3. Yes, you can use the same circuit as reference design; it's exactly for 2S1P battery pack. Datasheet has following statement:

   Critical supply voltage falling threshold on VDCSNS pin.
   Connect voltage divider resistors from VIN to detect when input
   voltage is low. For 2S should be 4X top resistor, X bottom
   resistor. (rising hysteresis = 20 mV)
   0h = No limit
   1h = 1.2 V
   2h = 1.18 V
   3h = 1.16 V
   4h = 1.14 V
   5h = 1.12 V
   6h = 1.1 V
   7h = 1.08 V