TPS51716 Complete DDR2/3/3L/4 Memory Power Solution Synchronous Buck Controller, 2-A LDO | TI.com

TPS51716 (ACTIVE)

Complete DDR2/3/3L/4 Memory Power Solution Synchronous Buck Controller, 2-A LDO

 

Description

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.

Features

  • 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

WEBENCH® Designer TPS51716

  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

Parametrics

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Part number Order 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) Package Group Package size: mm2:W x L (PKG)
TPS51716 Order now DDR
DDR2
DDR3
DDR3L
DDR4
LPDDR2
LPDDR3    
D-CAP2
S3
S4/S5    
20     2     0.6     VDDQ
VREF
VTT    
3     28     Complete Solution
Eco Mode
S3/S5 Support    
Catalog     -40 to 85     WQFN | 20     20WQFN: 9 mm2: 3 x 3 (WQFN | 20)    
TPS51116 Order now DDR
DDR2
DDR3
DDR3L
DDR4
LPDDR2
LPDDR3    
Current Mode
D-CAP    
25     3     0.8     VDDQ
VREF
VTT    
3     28     Complete Solution
Shutdown Pin for S3    
Catalog     -40 to 85     HTSSOP | 20
VQFN | 24    
20HTSSOP: 42 mm2: 6.4 x 6.5 (HTSSOP | 20)
24VQFN: 16 mm2: 4 x 4 (VQFN | 24)    
TPS51216 Order now DDR
DDR2
DDR3
DDR3L
DDR4
LPDDR2
LPDDR3    
D-CAP
S4/S5    
20     2     0.6     VDDQ
VREF
VTT    
3     28     Complete Solution
Eco Mode
S3/S5 Support    
Catalog     -40 to 85     WQFN | 20     20WQFN: 9 mm2: 3 x 3 (WQFN | 20)    
TPS51916 Order now DDR
DDR2
DDR3
DDR3L
DDR4
LPDDR2
LPDDR3    
D-CAP
D-CAP2
S3
S4/S5    
20     2     0.6     VDDQ
VREF
VTT    
3     28     Complete Solution
Eco Mode
S3/S5 Support    
Catalog     -40 to 85     WQFN | 20     20WQFN: 9 mm2: 3 x 3 (WQFN | 20)    
TPS59116 Order now DDR
DDR2
DDR3
DDR3L
DDR4
LPDDR2
LPDDR3    
Current Mode
D-CAP    
25     3     0.8     VDDQ
VREF
VTT    
3     28     Status Pin     Catalog     -40 to 85     VQFN | 24     24VQFN: 16 mm2: 4 x 4 (VQFN | 24)