Single-Phase PWM Regulator for IMVP-6.5™ Mobile CPUs and GPUs

The ISL62881 is a single-phase PWM buck regulator for miroprocessor or graphics processor core power supply. It uses an integrated gate driver to provide a complete solution. The PWM modulator of ISL62881 is based on Intersils Robust Ripple Regulator (R3) technology™. Compared with traditional modulators, the R3™ modulator commands variable switching frequency during load transients, achieving faster transient response. With the same modulator, the switching frequency is reduced at light load, increasing the regulator efficiency.

Features
• Precision Core Voltage Regulation
    - 0.5% System Accuracy Over-Temperature
    - Enhanced Load Line Accuracy
• Voltage Identification Input
    - 7-Bit VID Input, 0V 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
• Superior Noise Immunity and Transient Response
• Current Monitor
• Differential Remote Voltage Sensing
• High Efficiency Across Entire Load Range
• Integrated Gate Driver
• Split LGATE Driver to Increase Light-Load Efficiency (for ISL62881B)
• Adaptive Body Diode Conduction Time Reduction
• User-selectable Overshoot Reduction Function
• Capable of Disabling the Droop Function
• Audio-filtering for GPU Application
• Small Footprint 28 Ld 4x4 TQFN Package
• Pb-Free (RoHS Compliant)

Applications
• Notebook Computers