TPS51216 - Texas Instruments

TPS51216 Memory Power Solution Synchronous Buck Controller

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-o.

Features

1
•2 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 .