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TPS65220: TPS6522053RHBR

Nikhilraj KB
Prodigy 130 points
Part Number: TPS65220
Other Parts Discussed in Thread: TPS65219

Hi Team , 

we are developing a hardware based on AM6442ASFGGAALV. We have following initial queries .Please help

.we are planning to use the Pmic( TPS6522053RHBR)  in our design. we need to know if we can directly buy this part number from online distributors and use in our design or any SW programming is required for this chip before using
regards ,
Nikhil
  • 0
    TI__Mastermind 20066 points

    Hi Nikhil,

    Thanks for reaching out. The TPS6522053 PMIC comes pre-programmed with the required NVM settings to meet the AM64x power/sequence requirements. No need for SW programming. This PMIC variant can power the AM64x processor with VDD_CORE=0.75V, LPDDR4 and other peripherals. Below are the links to the resources available to assist your design. Let us know if there are any questions.

    Thanks,

    Brenda

  • 0 in reply to Brenda Diaz
    Prodigy 130 points

    Hi Brenda, 

    Thank you for the response . We are using DDR4 (not LPDDR) .  We need to reconfigure for DDR4 (1.2 V) ?   Our input voltage is 5V

  • 0 in reply to Nikhilraj KB
    TI__Mastermind 20066 points

    Hi Nikhil,

    Does your application need the PMIC to support extended temperature (125C ambient, 150C junction)? If not, we recommend using one of the options listed below to power the AM64x + DDR4 with a 5V input supply. The TPS65219 PMIC is functionally equivalent to TPS65220 and pin to pin compatible. It supports temperature up to 105C ambient and 125C junction. Let us know if you have any questions. 

    Options to power AM64x + DDR4 with 5V input supply:

    • TPS6521901
      • supports VDD_CORE = 0.75V
      • LDO1 can be used to supply the 1.8V IO domain if the total current doesn't exceed 400mA. If LDO1 is used to supply the 1.8V IO domain, VSEL_SD digital pin must be connected to ground with an external pull-down. 

    • TPS6521907
      • supports VDD_CORE = 0.85V
      • LDO1 or LDO2 can be used to supply the 1.8V IO domain if the total current doesn't exceed 400mA. If LDO1 is used to supply the 1.8V IO domain, VSEL_SD digital pin must be connected to ground with an external pull-down. 

    Thanks,

    Brenda

  • 0 in reply to Brenda Diaz
    Prodigy 130 points

    Thank you Brenda , 

    looks TPS6521901 would be the right choice for us . VDD_CORE to be 0.75V, right ?

    we are planning to use LDO1  for 3v3 for peripherals  . Buck2  is also 3V3 for the SOC. 

    SOC itself would require >1A  for 1.8V ?  

  • +1 in reply to Nikhilraj KB
    TI__Mastermind 20066 points

    Hi Nikhil,

    Please find my feedback below and let us know if you have any questions. 

    • Yes, TPS6521901 has Buck1 configured to output 0.75V to supply VDD_CORE. 

    • VSEL_SD sets the output voltage of LDO1. If you are planning to use LDO1 for 3.3V peripherals, VSEL_SD pin must be pulled up high (to VSYS or the output of Buck2). 

    • All the Bucks on the TPS6521901 were configured to operate in quasi-fixed frequency and high bandwidth. This configuration requires a minimum of 30uF output capacitance (after derating). 47uF per Buck is typically use. 

    • 400mA should be sufficient to to cover the current requirements of the 1.8V IO domains in the AM64 processor. I recommend doing a system level power analysis to understand what would be the total current on the 1.8V IO including AM64 + peripherals. The Sitara processor team also offers an estimator tool to help customers estimate the power consumption. Here is the link: https://www.ti.com/lit/pdf/spracw6

    Thanks,

    Brenda

  • 0 in reply to Brenda Diaz
    Prodigy 130 points

    Thank you Brenda , 

    This resolved my issue