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 Intersil's 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. The ISL62881 can be configured as CPU or graphics Vcore controller and is fully compliant with IMVP-6. 5™ specifications. It responds to DPRSLPVR signals by entering/exiting diode emulation mode. It reports the regulator output current through the IMON pin. It senses the current by using either discrete resistor or inductor DCR whose variation over-temperature can be thermally compensated by a single NTC thermistor. It uses differential remote voltage sensing to accurately regulate the processor die voltage. The adaptive body diode conduction time reduction function minimizes the body diode conduction loss in diode emulation mode. User-selectable overshoot reduction function offers an option to aggressively reduce the output capacitors as well as the option to disable it for users concerned about increased system thermal stress. Maintaining all the ISL62881 functions, the ISL62881B offers VR_TT# function for thermal throttling control. It also offers the split LGATE function to further improve light load 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

Product Options

Part Number Part Status Pkg. Type Carrier Type MOQ Buy Sample
Active TQFN Tube 75
Availability
Active TQFN Reel 6000
Availability

Documentation

Title language Type Format File Size Date
Datasheets & Errata
ISL62881, ISL62881B Datasheet Datasheet PDF 1.79 MB
User Guides & Manuals
ISL8200MEVAL2PHZ User Guide Manual PDF 683 KB
Application Notes & White Papers
AN1681: Grounding Techniques Application Note PDF 509 KB
AN1684: Nonideality of Ground Application Note PDF 397 KB
Five Easy Steps to Create a Multi-Load Power Solution White Paper PDF 846 KB
PCNs & PDNs
PCN20029A - Alternate bond wire material and assembly facility of the listed Renesas QFN packaged products Product Change Notice PDF 327 KB
PCN15046 - Wafer Fabrication Site Change for Listed Intersil Products - Global Foundry P6 Process transfer to Palm Bay - Phase II Product Change Notice PDF 398 KB
PCN13063 - Alternate Manufacturing Site for Assembly of the Listed Intersil DFN/QFN Packaged Products Product Change Notice PDF 145 KB
PCN13024B - Alternate Manufacturing Site for Assembly of the Listed Intersil DFN/QFN Packaged Products - Canceled for select products Product Change Notice PDF 243 KB
PCN13024 - Alternate Manufacturing Site for Assembly of the Listed Intersil DFN/QFN Packaged Products - Advanced Semiconductor Engineering - Chung-Li, Taiwan (ASECL Product Change Notice PDF 183 KB
PCN13009 - Alternate Bond Wire Material and Manufacturing Facilities for Assembly of the Listed Intersil DFN/QFN Packaged Products - Advanced Semiconductor Engineering (ASECL) - Chung-Li (ASECL), Taiwan and STATS ChipPAC (SCM) - Kuala Lump Product Change Notice PDF 173 KB
PCN11028A - Data Sheet Electrical Specification Change for Intersil ISL62881* and ISL62881B* Products Product Change Notice PDF 142 KB
PCN11028 - Data Sheet Electrical Specification Change for Intersil ISL62881* and ISL62881B* Products Product Change Notice PDF 88 KB
PCN11005 - Alternate Manufacturing Site for the Listed Intersil QFN/TQFN Packaged Products - STATS ChipPAC Malaysia Product Change Notice PDF 153 KB
PCN10055 - Alternate Bond Wire Material for Assembly of the Listed Intersil DFN/QFN Packaged Products - STATS ChipPAC Malaysia Product Change Notice PDF 248 KB
Other
Industrial Power Management Brochure ( R16CL0001EJ0200 ) 日本語 Brochure PDF 3.13 MB
PLC14003B - Product Discontinuance / Obsolescence Notification Product Life Cycle Notice PDF 204 KB
PLC14003 - Product Discontinuance / Obsolescence Notification Product Life Cycle Notice PDF 179 KB

Boards & Kits

Part Number Title Type Company
ISL62881CCPUEVAL2Z Single-Phase PWM Regulator Evaluation Board for IMVP-6.5™ Mobile CPUs and GPUs Evaluation Renesas
ISL62881CGPUEVAL2Z Single-Phase PWM Regulator Evaluation Board for IMVP-6.5™ Mobile CPUs and GPUs Evaluation Renesas