Overview

The ISL62881C provides a complete solution for microprocessor and graphic processor core power supply with its integrated gate drive. Based on Renesas' Robust Ripple regulator (R3™) technology, the PWM modulator compared to traditional modulators, has faster transient settling time, variable switching frequency during load transients and has improved light load efficiency with its ability to automatically change switching frequency. Fully compliant with IMVP6. 5™, the ISL62881C is easily configurable as a CPU or graphics VCORE controllers by offering: responds to DPRSLPVR signals by entering/exiting diode emulations mode; reports regulator output current via the IMON pin; senses current by using a discrete resistor or the inductor; over-temperature thermal compensation of DCR, using a single NTC thermistor; differential sensing to accurately monitor and adjust processor die voltage; minimizes body diode conduction loss in diode emulation mode with its adaptive body diode conduction time. Need to aggressively reduce the output capacitor? The overshoot reduction function is user-selectable and can be disabled for those concerned about increased system thermal stress. Maintaining all the ISL62881C functions, the ISL62881D offers VR_TT# function for thermal throttling control. It also offers the split LGATE function to further improve light load efficiency.

ISL62881C_ISL62881D Functional Diagram
ISL62881C_ISL62881D Functional Diagram
  • Precision Core Voltage Regulation
  • 0.5% System Accuracy Over-Temperature
  • Enhanced Load Line Accuracy
  • Supports Multiple Current Sensing Methods
  • Lossless Inductor DCR Current Sensing
  • Precision Resistor Current Sensing
  • Current Monitor
  • Differential Remote Voltage Sensing
  • Integrated Gate Driver
  • Split LGATE Driver to Increase Light-Load Efficiency (For ISL62881D)
  • Adaptive Body Diode Conduction Time Reduction
  • User-selectable Overshoot Reduction Function
  • Small Footprint 28 Ld 4x4 or 32 Ld 5x5 TQFN Package

Applications

  • Notebook Core Voltage Regulator
  • Notebook GPU Voltage Regulator

Design & Development

ISL62881CCPUEVAL2Z CPU PWM Controller Eval Board

ISL62881CCPUEVAL2Z

Evaluation
Learn More

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

The ISL62881CCPUEVAL2Z evaluation board is used to demonstrate the performance of the ISL62881C single-phase synchronous-buck PWM GPU VCORE controller implementing the...

Featured Documents:
ISL62881CCPUEVAL2Z User Guide
ISL62881CGPUEVAL2Z GPU PWM Controller Eval Board

ISL62881CGPUEVAL2Z

Evaluation
Learn More

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

The ISL62881CGPUEVAL2Z evaluation board is used to demonstrate the performance of the ISL62881C single-phase synchronous-buck PWM GPU VCORE controller implementing the...

Featured Documents:
ISL62881CGPUEVAL2Z User Guide

ECAD Models

Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on products in the Product Options table. If a symbol or model isn't available, it can be requested directly from the website.

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Product Options

    Processing table
    Pkg. Type
    Carrier Type
    MOQ
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    Part Number
    ISL62881DHRTZ
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    		TQFN Tube 600
    ISL62881DHRTZ-T
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    memory
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    		TQFN Reel 6000
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