• State TI Thinks Resolved
  • Locked Locked
  • Replies 14 replies
  • Answers 4 answers
  • Subscribers 63 subscribers
  • Views 299 views
  • Users 0 members are here
Support feedback
Options
Options
Similar topics

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

Original question:

TPS53659: Is SN1701022 and TPS53659 compatible.

TPS53659: Pspice Model and Design spreadsheet/ checklist

RAJ KUMAR
Prodigy 230 points
Part Number: TPS53659
Other Parts Discussed in Thread: TPS53622, TPS53678

Hi,

As I mentioned in the trailing support tickets, we are working on Intel Xeon D- 1746TER (Idaville). For this, TPS53659 and TPS53622 Multiphase VR are used with CSD95492 & CSD95495 power stages

(MOSFET).

We have NDA signed with TI. 

For the power sections simulations, I need PSPICE Models of the TPS53659 and TPS53622 Multiphase VR. so, please share the same, also provide us the design spreadsheet/ checklist of the same voltage regulators. 

 

Thank You

Raj Kumar

  • 0
    TI__Expert 4260 points

    Hi Raj Kumar, 

    We unfortunately do not have PSpice models for these devices. We do have a SIMPLIS model of their core device TPS53678 (TPS53659 and TPS53622 are spins of the core). 

    Let me know if you would be okay with that and I can send it to your email along with the design checklist. 

    Best Regards, 

    Dhanya Prem

  • 0 in reply to Dhanyasree Prem Sankar
    Prodigy 230 points

    Hi Dhanya Prem,

    Thanks for the response.

    Please share the SIMPLIS model and design checklist.

    also, please share any guide document for this SIMPLIS model, as I am new to this.

    Thank You 

    Raj Kumar

  • 0 in reply to RAJ KUMAR
    TI__Expert 4260 points

    Moved to email ~ I have sent an email to raj.kumar@logic-fruit.com, kindly confirm. 

    Best Regards, 

    Dhanya Prem

  • 0 in reply to Dhanyasree Prem Sankar
    Prodigy 230 points

    Yes, I got the mail.

    but attachments are missing.

    Thank You

    Raj KUmar

  • 0 in reply to RAJ KUMAR
    Prodigy 230 points

    Hi Dhanya Prem,

    I have one more doubt here, regarding the SVID and PMBus addresses.

    I am referring the TI Power solution for Idaville (Intel Xeon- D1746) series processors.

    In the reference document "SN1701022_CSD95420_CSD95484_Idaville_PVNN_NAC_PVCCANA", the address of PMBUS is given as CC hex.

    But Idaville datasheet doesn't have this SMBUS address, it recommends 7C hex for the VNN_NAC supply.

    it means both the addresses are different and TPS53622 doesn't have this 7C hex address option for PMBUS.

    Please suggest me which address is correct one and how.

    please reply at the earliest.

    Thank You

    Raj Kumar

  • 0 in reply to RAJ KUMAR
    TI__Expert 4260 points

    Hi Rajkumar, 

    I am looking into this and I will let you know! 

    Best Regards, 

    Dhanya Prem

  • 0 in reply to Dhanyasree Prem Sankar
    TI__Expert 4260 points

    I have emailed you the guidelines and Simplis model. It should be the Simplis model for the family of devices. 

    With regards to your previous question - where did you get those reference files from?

    Thank you, 

    Dhanya Prem 

  • 0 in reply to Dhanyasree Prem Sankar
    Prodigy 230 points

    Hi Dhanya Prem,

    Thanks for sharing models.

    regarding my another query-

    I got the reference design from TI support only (Barr, Brett" <b-barr@ti.com>).

    Thank You

    Raj Kumar

  • 0 in reply to RAJ KUMAR
    TI__Expert 4260 points

    We are looking into this, 

    Will get back to when we have an answer. 

    Thank you, 

    Dhanya Prem

  • 0 in reply to Dhanyasree Prem Sankar
    TI__Expert 4260 points

    Hey Raj Kumar, 

    Sorry in the delay in getting back to you. If you are following an Intel reference, we highly recommend that you use whatever Intel recommends. Sometimes we use 7-bit hexadecimal address and 8-bit hexadecimal address interchangeably. When you are selecting PMBus address, it is usually in decimal form, so I would recommend converting your hexadecimal address to decimal to find it. 

    Best Regards, 

    Dhanya Prem

  • 0 in reply to Dhanyasree Prem Sankar
    Prodigy 230 points

    Hi Dhanya Prem,

    Thank you for the response.

    Still, It is not clear to me. 

    This is the SVID & SMBus address table provided in Intel document "Idaville LCC Power Design Guidelines, Reference Number: 576513". 

    Now, please take an example of PVDDQ_ABC_CPU supply. its SMBus address is 70h (as per Intel) which is equivalent to 112d.

    Now, If try to find out this in TPS53659 datasheet (Table. 5-3 PMbus slave bus address).

    though I couldn't find the 70h address in this table and its equivalent decimal (112d) is there which gives me E0h I2C write address. 

    Now, if I compare this address to TI's reference design schematic of the same processor. it is completely different as shown below-

    here it is 64h (C8h) which is unclear to me.

    Please clarify this confusion.  

    I cannot even use the Intel's recommended address as it not provided in TPS53659 (TI) datasheet.

    Thank You

    Raj Kumar

  • 0 in reply to RAJ KUMAR
    TI__Expert 4260 points

    Raj Kumar, 

    The intel recommended address is provided in the TI datasheet. There are two types of hexadecimal addresses. 7-bit hexadecimal address and 8-bit hexadecimal address. We provide an 8-bit hexadecimal address. 

    Kindly use whatever address Intel recommends. 

    70h (7-bit binary address) - 1110000

    E0h (8-bit binary address) - 1110000 0 <= extra 0 in the end 

    You should be able to use 112d very comfortably on the GUI as well. Let me know where the issue is because that is sort of unclear to me. 

    Best, 

    Dhanya Prem

  • 0 in reply to Dhanyasree Prem Sankar
    Prodigy 230 points

    Hi Dhanya Prem,

    I have confusion with the the TI's reference schematic for this same supply and same processor. 

    Reference document name- "SN1701022_CSD95420_Idaville_PVDDQ_ABC".

    In this document, PMBus address is taken as 64h(C8h) which is different from 70h (or 112d).

    Please refer to the above screen shot. Hope my concern is clear to you.

    Doubt 2: - Please note that SMBus for P1V05 supply is 84h as per Intel guidelines which is equivalent to 132d. 

    If I go through the datasheet of TPS53659, couldn't find the address 132d in the list (even the maximum address is 119d).

    I have one more doubt, I will be covering it in next reply.

    Thank You 

    Raj Kumar

  • 0 in reply to RAJ KUMAR
    TI__Expert 4260 points

    Hi Raj Kumar, 

    As I have mentioned in my previous replies, I will again be asking you to refer to Intel's schematic and follow accordingly. Our material can sometimes be outdated and might not match what Intel has or recommends. Use Intel as Reference for values.

    Additionally, PMBus addressing is for TI device and the Intel CPU does not utilize PMBus or talk on PMBus. So these values by Intel for PMBus Addressing are a recommendation and is up to system level and can be changed as desired. The thing that you should strictly adhere to is SVID address because that is Intel's communication protocol. PMBus addresses are recommendations and are not a hard requirement to work with Intel CPU. 

    If you have questions regarding the PSpice schematic/layout or PMBus addressing, you can re-open the ticket. 

    If you additional concerns outside of this, kindly open a new thread. 

    Best Regards, 

    Dhanya Prem