TPS51116 Complete DDR, DDR2, DDR3, DDR3L, LPDDR3 and DDR4 power solution synchronous buck controller, 3A LDO | TI.com

TPS51116
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Complete DDR, DDR2, DDR3, DDR3L, LPDDR3 and DDR4 power solution synchronous buck controller, 3A LDO

 

Description

The TPS51116 provides a complete power supply for DDR/SSTL-2, DDR2/SSTL-18, DDR3/SSTL-15, DDR3L, LPDDR3 and DDR4 memory systems. It integrates a synchronous buck controller with a 3-A sink/source tracking linear regulator and buffered low noise reference. The device offers the lowest total solution cost in systems where space is at a premium. The synchronous controller runs fixed 400-kHz, pseudo-constant frequency PWM with an adaptive on-time control that can be configured in D-CAP™ Mode for ease of use and fastest transient response or in current mode to support ceramic output capacitors. The 3-A sink/source LDO maintains fast transient response only requiring 20-µF (2 × 10 µF) of ceramic output capacitance. In addition, the LDO supply input is available externally to significantly reduce the total power losses. The device supports all of the sleep state controls placing VTT at high-Z in S3 (suspend to RAM) and discharging VDDQ, VTT and VTTREF (soft-off) in S4/S5 (suspend to disk). The device has all of the protection features including thermal shutdown and is offered in both a 20-pin HTSSOP PowerPAD™ package and 24-pin 4 × 4 QFN.

Features

  • Synchronous Buck Controller (VDDQ)
    • Wide-Input Voltage Range: 3.0-V to 28-V
    • D−CAP™ Mode with 100-ns Load Step Response
    • Current Mode Option Supports Ceramic Output Capacitors
    • Supports Soft-Off in S4/S5 States
    • Current Sensing from RDS(on) or Resistor
    • 2.5-V (DDR), 1.8-V (DDR2), Adjustable to
      1.5-V (DDR3), 1.35-V (DDR3L), 1.2-V (LPDDR3 and DDR4) or
      Output Range 0.75-V to 3.0-V
    • Equipped with Powergood, Overvoltage Protection and Undervoltage Protection
  • 3-A LDO (VTT), Buffered Reference (VREF)
    • Capable to Sink and Source 3 A
    • LDO Input Available to Optimize Power Losses
    • Requires only 20-µF Ceramic Output Capacitor
    • Buffered Low Noise 10-mA VREF Output
    • Accuracy ±20 mV for both VREF and VTT
    • Supports High-Z in S3 and Soft-Off in S4/S5
    • Thermal Shutdown

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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)
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)    
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)