TPS51216 DDR2/3/3L/4 Memory Power Solution Synchronous Buck Controller, 2-A LDO, Buffered Reference | TI.com

TPS51216 (ACTIVE)

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

 

Description

The TPS51216 provides a complete power supply for DDR2, DDR3 and DDR3L 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 TPS51216 employs D-CAP™ mode coupled with 300 kHz/400 kHz frequencies for ease-of-use and fast transient response. The VTTREF tracks VDDQ/2 within excellent 0.8% accuracy. The VTT, which provides 2-A sink/source peak current capabilities, requires only 10-μF of ceramic capacitance. In addition, a dedicated LDO supply input is available.

The TPS51216 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. Programmable OCL with low-side MOSFET RDS(on) sensing, OVP/UVP/UVLO and thermal shutdown protections are also available.

The TPS51216 is available in a 20-pin, 3 mm × 3 mm, QFN package and is specified for ambient temperature from –40°C to 85°C.

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
    • D-CAP™ Mode for Fast Transient Response
    • Selectable 300 kHz/400 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, QFN Package
  • APPLICATIONS
    • DDR2/DDR3/DDR3L Memory Power Supplies
    • SSTL_18, SSTL_15, SSTL_135 and HSTL Termination

WEBENCH® Designer TPS51216

  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 125°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)
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)    
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-EP Order now DDR
DDR2
DDR3
DDR3L
LPDDR2
LPDDR3    
D-CAP
S4/S5    
20     2     0.6     VDDQ
VREF
VTT    
3     28     Shutdown Pin for S3     HiRel Enhanced Product     -55 to 125     WQFN | 20     20WQFN: 9 mm2: 3 x 3 (WQFN | 20)    
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)    
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)