Enhanced 6-Phase PWM Controller with 8-Bit VID Code and Differential Inductor DCR or Resistor Current Sensing

The ISL6327A controls microprocessor core voltage regulation by driving up to6 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.

Features

• Proprietary Active Pulse Positioning and Adaptive Phase Alignment Modulation Scheme

• Precision Multiphase Core Voltage Regulation

- Differential Remote Voltage Sensing

- ±0.5 System Accuracy Over Life, Load, Line and Temperature

- Adjustable Precision Reference-Voltage Offset

• Precision Resistoror DCR Current Sensing

- Accurate Load-Line Programming, Channel-Current Balancing, Differential Current Sense

• Microprocessor Voltage Identification Input

- Dynamic VID™ Technology

- 8-Bit VID Input with Selectable VR11 code and Extended VR10 Code at 6.25mV Per Bit

- 0.5V to 1.600V Operation Range

• Monotonic Output Voltage Soft-start

• Thermal Monitoring

• Integrated Programmable Temperature Compensation

• Overcurrent Protection and Channel Current Limit

• Overvoltage Protection with OVP Output Indication

• 2-, 3-, 4-, 5- or 6-Phase Operation

• Adjustable Switching Frequency up to 1MHz Per Phase

• Package Option

- QFN Compliant to JEDEC PUB95 MO-220 QFN - Quad Flat No Leads - Product Outline

- QFN Near Chip Scale Package Footprint; Improves PCB Efficiency, Thinner in Profile

• Pb-Free (RoHS Compliant)