Product details


DDR memory type DDR, DDR2, DDR3, DDR3L, DDR4, LPDDR2, LPDDR3 Control mode D-CAP2, S3, S4/S5 Iout VDDQ (Max) (A) 20 Iout VTT (Max) (A) 2 Iq (Typ) (mA) 0.6 Output VDDQ, VREF, VTT Vin (Min) (V) 3 Vin (Max) (V) 28 Features Complete Solution, Eco Mode, S3/S5 Support Rating Catalog Operating temperature range (C) -40 to 85 open-in-new Find other DDR memory power ICs

Package | Pins | Size

WQFN (RUK) 20 9 mm² 3 x 3 open-in-new Find other DDR memory power ICs


  • Synchronous Buck Controller (VDDQ)
    • Conversion Voltage Range: 3 to 28 V
    • Output Voltage Range: 0.7 to 1.8 V
    • 0.8% VREF Accuracy
    • D-CAP2™ Mode for Ceramic Output Capacitors
    • Selectable 500-kHz/670-kHz Switching Frequencies
    • Optimized Efficiency at Light and Heavy Loads With Auto-Skip Function
    • Supports Soft-Off in S4/S5 States
    • OCL/OVP/UVP/UVLO Protections
    • Powergood Output
  • 2-A LDO (VTT), Buffered Reference (VTTREF)
    • 2-A (Peak) Sink and Source Current
    • Requires Only 10-µF of Ceramic Output Capacitance
    • Buffered, Low Noise, 10-mA VTTREF Output
    • 0.8% VTTREF, 20-mV VTT Accuracy
    • Support High-Z in S3 and Soft-Off in S4/S5
  • Thermal Shutdown
  • 20-Pin, 3 mm × 3 mm, WQFN Package
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The TPS51716 provides a complete power supply for DDR2, DDR3, DDR3L, LPDDR3, and DDR4 memory systems in the lowest total cost and minimum space. It integrates a synchronous buck regulator controller (VDDQ) with a 2-A sink/source tracking LDO (VTT) and buffered low noise reference (VTTREF). The TPS51716 employs D-CAP2 mode coupled with 500 kHz or 670 kHz operating frequencies that supports ceramic output capacitors without an external compensation circuit. The VTTREF tracks VDDQ/2 with excellent 0.8% accuracy. The VTT, which provides 2-A sink/source peak current capabilities, requires only 10 µF of ceramic capacitance. In addition, the device features a dedicated LDO supply input.

The TPS51716 provides rich, useful functions as well as excellent power supply performance. It supports flexible power state control, placing VTT at high-Z in S3 and discharging VDDQ, VTT and VTTREF (soft-off) in S4/S5 state. It includes programmable OCL with low-side MOSFET RDS(on) sensing, OVP/UVP/UVLO and thermal shutdown protections.

TI offers the TPS51716 in a 20-pin, 3 mm × 3 mm, WQFN package and specifies it for an ambient temperature range between –40°C and 85°C.

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Technical documentation

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Type Title Date
* Datasheet TPS51716 Complete DDR2, DDR3, DDR3L, LPDDR3, and DDR4 Memory Power Solution Synchronous Buck Controller, 2-A LDO, With Buffered Reference datasheet (Rev. A) Oct. 05, 2016
Application notes Non-Isolated Point-of-Load Solutions for Tiger Lake in PC Applications (Rev. A) May 21, 2020
Selection guides Power Management Guide 2018 (Rev. R) Jun. 25, 2018
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Design & development

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Design tools & simulation

SLUM340.ZIP (78 KB) - PSpice Model

Reference designs

Reference Design - DDR3/DDR4 Power Supply with 5V Input and 10A Load for Industrial PCs
PMP10029 This reference design shows a universal power supply solution for DDR3 and DDR4 memory. A synchronous Buck converter provides an output voltage of 1.35V for a 9A load in DDR3L configuration. A linear regulator provides a second voltage of 0.675V for a 2A load.
document-generic Schematic document-generic User guide

CAD/CAE symbols

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