ISL6327 В® Data Sheet May 5, 2008 FN9276.4 Enhanced 6-Phase PWM Controller with
8-Bit VID Code and Differential Inductor
DCR or Resistor Current Sensing Features The ISL6327 controls microprocessor core voltage regulation
by driving up to 6 synchronous-rectified buck channels in
parallel. Multiphase buck converter architecture uses
interleaved timing to multiply channel ripple frequency and
reduce input and output ripple currents. Lower ripple results in
fewer components, lower component cost, reduced power
dissipation, and smaller implementation area. Precision Multiphase Core Voltage Regulation
-Differential Remote Voltage Sensing
-В±0.5% System Accuracy Over Life, Load, Line and
Temperature
-Adjustable Precision Reference-Voltage Offset Microprocessor loads can generate load transients with
extremely fast edge rates. The ISL6327 utilizes Intersil’s
proprietary Active Pulse Positioning (APP) and Adaptive
Phase Alignment (APA) modulation scheme to achieve the
extremely fast transient response with fewer output
capacitors.
Today’s microprocessors require a tightly regulated output
voltage position versus load current (droop). The ISL6327
senses the output current continuously by utilizing patented
techniques to measure the voltage across the dedicated
current sense resistor or the DCR of the output inductor. …
