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  • TI Thinks Resolved

TPS54116-Q1: DDR4 Power Solution Reference Design

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Part Number: TPS54116-Q1

The TPS54116-Q1 datasheet states that the PMIC may be used to support DDR4 memory if used in conjunction with a separate power supply for the VPP (2.5V) power rail.  Could a reference design where the TPS54116-Q1 is used for a DDR4 power solution please be provided?

The datasheet makes no mention of the TPS54116-Q1 compliance with DDR4 power-up, power-down, and RESET initialization sequences (as defined by JEDEC) or compliance with VDD slew rate at power-up initialization sequence (as defined by JEDEC).  Can you confirm that the TPS54116-Q1 power rail sequencing complies with the DDR4 JEDEC requirements?

Figure 47 (for reference)

  • Hi Alexander,

    We don't have reference design specific for DDR4, but figure 47 in datasheet provided the part number for VPP. You can also use some similar DC/DC converter for VPP as well.

    TPS54116-Q1 has independent Enable pin for VDD/VTT, so user can control the power on/off sequence. It also has programmable soft start time, so it can meet JEDEC power on/off requirement if configured correctly.

    Regards,

    Weidong

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