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Home » NEWEST Products » New by Manufacturer » Texas Instruments » Power & Memory Interface Solutions for DDR - TI
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Texas Instruments Power & Memory Interface Solutions for DDR

TI Power & Memory Interface Solutions for DDR


Texas Instruments Power and Memory Interface Solutions provide efficient, high density, cost effective solutions for designs using DDR memory. These TI devices provide the essential resources for mobile or embedded computing applications using DDR, DDR4, or any variation in-between. TPS51116 provides a complete power supply for DDR/SSTL-2, DDR2/SSTL-18, and DDR3 memory systems. TPS51216 provides a complete power supply for DDR2, DDR3, and DDR3L memory systems in the lowest total cost and minimum space.



Voltage Controller Application Circuit
Voltage Controller Application Circuit

DDR Switch Solution Diagram
DDR Switch Solution Diagram

DDR Power Solutions Guide
DDR Power Solutions Guide
TI TPS51116 DDR Switcher & LDO

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Additional Resources

TI TPS51116 DDR Switcher & LDO

TPS51116 DDR Switcher and LDO provides a complete power supply for DDR/SSTL-2, DDR2/SSTL-18, and DDR3 memory systems. This TI device integrates a synchronous buck controller with a 3A sink/source tracking linear regulator and buffered low noise reference. TPS51116 offers the lowest total solution cost in systems where space is at a premium. TPS51116 synchronous controller runs fixed 400kHz 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 3A sink/source LDO maintains fast transient response only requiring 20µF (2×10µF) of ceramic output capacitance.


Features
  • Synchronous Buck Controller (VDDQ)
    • Wide-Input Voltage Range: 3.0V to 28V
    • D-CAP™ Mode with 100ns Load Step Response
    • Current Mode Option Supports Ceramic Output Capacitors
    • Supports Soft-Off in S4/S5 States
    • Current Sensing from RDS(on) or Resistor
    • 2.5V (DDR), 1.8V (DDR2), Adjustable to 1.5V (DDR3) or Output Range 0.75V to 3.0V
    • Equipped with Powergood, Overvoltage Protection and Undervoltage Protection
  • 3A LDO (VTT), Buffered Reference (VREF)
    • Capable to Sink and Source 3A
    • LDO Input Available to Optimize Power Losses
    • Requires only 20µF Ceramic Output Capacitor
    • Buffered Low Noise 10mA VREF Output
    • Accuracy ±20mV for both VREF and VTT
    • Supports High-Z in S3 and Soft-Off in S4/S5
    • Thermal Shutdown
Applications
  • DDR/DDR2/DDR3/LPDDR3 Memory Power Supplies
  • SSTL-2, SSTL-18, and HSTL Termination
Functional Block Diagram
Functional Block Diagram
TI TPS51216 DDR Memory Power Solution

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Additional Resources

TI TPS51216 DDR Memory Power Solution

TI TPS51216 DDR Memory Power Solution provides a complete power supply for DDR2, DDR3, and DDR3L memory systems in the lowest total cost and minimum space. This TI device integrates a synchronous buck regulator controller (VDDQ) with a 2A sink/source tracking LDO (VTT) and buffered low noise reference (VTTREF). The TPS51216 employs D-CAP™ mode coupled with 300kHz/400kHz 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 10μF of ceramic capacitance. TPS51216 provides rich useful functions as well as excellent power supply performance.


Features
  • Synchronous Buck Controller (VDDQ)
    • Conversion Voltage Range: 3V to 28V
    • Output Voltage Range: 0.7V to 1.8V
    • 0.8% VREF Accuracy
    • D-CAP™ Mode for Fast Transient Response
    • Selectable 300kHz/400kHz 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
  • 2A LDO(VTT), Buffered Reference(VTTREF)
    • 2A (Peak) Sink and Source Current
    • Requires Only 10μF of Ceramic Output Capacitance
    • Buffered, Low Noise, 10-mA VTTREF Output
    • 0.8% VTTREF, 20mV VTT Accuracy
    • Support High-Z in S3 and Soft-Off in S4/S5
Applications
  • DDR2/DDR3/DDR3L Memory Power Supplies
  • SSTL_18, SSTL_15, SSTL_135, and HSTL Termination

Functional Block Diagram
Functional Block Diagram
enews
  • Texas Instruments