DDR2/3/3L/4 Memory Power Solution Synchronous Buck Controller - TPS51916

TPS51916 (ACTIVE)

DDR2/3/3L/4 Memory Power Solution Synchronous Buck Controller

 

Description

The TPS51916 device provides a complete power supply for DDR2, DDR3, DDR3L, 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 and 2-A source tracking LDO (VTT) and buffered low noise reference (VTTREF).

The device employs D-CAP™ mode coupled with 300 kHz or 400 kHz frequencies for ease-of-use and fast transient response or D-CAP2™ mode coupled with higher 500 kHz or 670 kHz frequencies to support ceramic output capacitor without an external compensation circuit. The VTTREF tracks VDDQ/2 within excellent 0.8% accuracy. The VTT, which provides 2-A sink and 2-A source peak current capabilities, requires only 10-µF of ceramic capacitance. A dedicated LDO supply input is available.

The device also provides 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 or S5 state. Programmable OCL with low-side MOSFET RDS(on) sensing, OVP, UVP, UVLO and thermal shutdown protections are also available.

Features

  • Synchronous Buck Controller (VDDQ)
    • Conversion Voltage Range: 3 V to 28 V
    • Output Voltage Range: 0.7 V to 1.8 V
    • 0.8% VREF Accuracy
    • Selectable Control Architecture
      • D-CAP™ Mode for Fast Transient Response
      • D-CAP2 Mode for Ceramic Output Capacitors
    • Selectable 300 kHz, 400 kHz, 500 kHz, or 670 kHz Switching Frequencies
    • Optimized Efficiency at Light and Heavy Loads with Auto-skip Function
    • Supports Soft-Off in S4 and S5 States
    • OCL/OVP/UVP/UVLO Protections
    • Powergood Output
  • 2-A LDO(VTT), Buffered Reference(VTTREF)
    • 2-A (Peak) Sink and Source Current
    • Buffered, Low Noise, 10-mA VTTREF Output
    • 0.8% VTTREF, 20-mV VTT Accuracy
    • Supports High-Z (S3) and Soft-Off (S4, S5)
  • Thermal Shutdown
  • 20-Pin, 3 mm × 3 mm, QFN Package
  • Create a WEBENCH Design

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Parametrics Compare all products in DDR Memory Power Solutions

 
DDR Memory Type
Control Mode
Iout VDDQ (Max) (A)
Iout VTT (Max) (A)
Iq (Typ) (mA)
Output
Vin (Min) (V)
Vin (Max) (V)
Features
Rating
Operating Temperature Range (C)
Pin/Package
TPS51916 TPS51116 TPS51216 TPS51716 TPS59116
DDR
DDR2
DDR3
DDR3L
DDR4
LPDDR2
LPDDR3   
DDR
DDR2
DDR3
DDR3L
DDR4
LPDDR2
LPDDR3   
DDR
DDR2
DDR3
DDR3L
DDR4
LPDDR2
LPDDR3   
DDR
DDR2
DDR3
DDR3L
DDR4
LPDDR2
LPDDR3   
DDR
DDR2
DDR3
DDR3L
DDR4
LPDDR2
LPDDR3   
D-CAP
D-CAP2
S3
S4/S5   
Current Mode
D-CAP   
D-CAP
S4/S5   
D-CAP2
S3
S4/S5   
Current Mode
D-CAP   
20    25    20    20    25   
2    3    2    2    3   
0.6    0.8    0.6    0.6    0.8   
VDDQ
VREF
VTT   
VDDQ
VREF
VTT   
VDDQ
VREF
VTT   
VDDQ
VREF
VTT   
VDDQ
VREF
VTT   
3    3    3    3    3   
28    28    28    28    28   
Complete Solution
Eco Mode
S3/S5 Support   
Complete Solution
Shutdown Pin for S3   
Complete Solution
Eco Mode
S3/S5 Support   
Complete Solution
Eco Mode
S3/S5 Support   
Status Pin   
Catalog    Catalog    Catalog    Catalog    Catalog   
-40 to 85    -40 to 85    -40 to 85    -40 to 85    -40 to 85   
20WQFN    20HTSSOP
24VQFN   
20WQFN    20WQFN    24VQFN   

WEBENCH® Designer TPS51916

  Min   Max Range
Vin  V 8.0 to 28.0V
IVDDQ  A 0 to 20A
IVTT  A 0 to 2A
DDR type
Ambient Temp  °C -40 to 85°C