Multiphase PWM Regulator for IMVP-6.5™ Mobile CPUs

The ISL62883 is a multiphase PWM buck regulator for miroprocessor core power supply. The multiphase buck converter uses interleaved phase to reduce the total output voltage ripple with each phase carrying a portion of the total load current, providing better system performance, superior thermal management, lower component cost, reduced power dissipation, and smaller implementation area.

Features

• Precision Multiphase Core Voltage Regulation

    - 0.5 System Accuracy Over-Temperature

    - Enhanced Load Line Accuracy

• Microprocessor Voltage Identification Input

    - 7-Bit VID Input, 0.300V to 1.500V in 12.5mV Steps

    - Supports VID Changes On-The-Fly

• Supports Multiple Current Sensing Methods

    - Lossless Inductor DCR Current Sensing

    - Precision Resistor Current Sensing

• Supports PSI# and DPRSLPVR modes

• Superior Noise Immunity and Transient Response

• Current Monitor and Thermal Monitor

• Differential Remote Voltage Sensing

• High Efficiency Across Entire Load Range

• Programmable 1-, 2- or 3-Phase Operation

• Two Integrated Gate Drivers

• Excellent Dynamic Current Balance Between Phases

• FB2 Function in 2-Phase Configuration to Optimize 1-Phase Performance

• Adaptive Body Diode Conduction Time Reduction

• User-selectable Overshoot Reduction Function

• Small Footprint 40 Ld 5x5 or 48 Ld 6x6 TQFN Package

• Pb-Free (RoHS Compliant)

Applications

• Notebook Computers