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TPS65910: Support DDR3L MT41K128M16

Kuan Wei Chen (Kevin Chen)
Genius 9710 points
Part Number: TPS65910
Other Parts Discussed in Thread: TPS65023B

Dear Team,

To supply power to the Micron DDR3L memory (MT41K128M16 via the PMIC (TPS65910), see the attached data sheet).
Is it possible to supply 5V, 3.3V, 1.8V and 1.35V outputs without additional program writing?
Or there are other PMICs that can be supplied with 5V, 3.3V, 1.8V and 1.35V without additional program writing. Thank you.

DDR3.pdf

BR

Kevin

  • 0
    TI__Mastermind 30280 points

    What is the processor in your system connected to the DDR3L memory?

    What is the input voltage?

    The TPS65910Ax devices are all intended to power the Sitara AM335x processor used with DDR3 memory (1.5V). The other SMPS in the PMIC, VDD1 & VDD2, are intended to power VDD_MPU and VDD_CORE of AM335x and default to 1.1V

    It is not common to integrate a boost into a PMIC, so if you are running off of a Li-Ion battery as the supply then the system would need a boost to generate 5V.

    The TPS65910 is the only device with an integrated boost for 5V, but as you can see the OTP that is released for TPS65910Ax will not generate 5V, 3.3V, 1.8V and 1.35V without a change in OTP.

    I would recommend you look at the TPS65023B (for 3.3V, 1.8V, 1.35V) with an external discrete Boost regulator to generate 5V.

    Let me know if this will work in your system.

  • 0 in reply to Brian Berner
    TI__Mastermind 30280 points

    switch Orderable Part #:

    Replace TPS65910AA1 (for 1.8V DDR2)  with TPS65910A3A1 or TPS65910A31A1 (both for 1.5V DDR3)