Multiphase PWM Regulator for VR12 DDR Memory Systems

   The ISL6353 is a three-phase PWM buck regulator controller for VR12 DDR memory applications. The multi-phase implementation results in better system performance, superior thermal management, lower component cost and smaller PCB area.

FEATUREs
• VR12 Serial Communications Bus
• Precision Voltage Regulation
   - 5mV Steps with VID Fast/Slow Slew Rates
• Supports Two Current Sensing Methods
   - Lossless Inductor DCR Current Sensing
   - Precision Resistor Current Sensing
• Programmable 1, 2 or 3-Phase Operation
• Adaptive Body Diode Conduction Time Reduction
• Superior Noise Immunity and Transient Response
• Pin Programmable Output Voltage and Power State Mode
• Output Current Monitor and Thermal Monitor
• Differential Remote Voltage Sensing
• High Efficiency Across Entire Load Range
• Programmable Switching Frequency
• Resistor Programmable VBOOT, Power State Operation,
   SVID Address Setting, IMAX
• Excellent Dynamic Current Balance Between Phases
• OCP/WOC, OVP, OT Alert, PGOOD
• Small Footprint 40 Ld 5x5 TQFN Package
• Pb-Free (RoHS Compliant)

APPLICATIONs
• DDR Memory