The ISL68144 is a digital dual output, flexible multiphase (X+Y ≤ 4) PWM controller developed to support the latest Cavium CN99xx server class processors. The ISL68144 supports the PMBus 1. 3 specification and is designed to meet the latest Intel server-class transient performance specifications. Either output can be configured to support any desired phase assignments up to a maximum of four phases across the two outputs (X+Y), such as 3+1, 2+2, 2+1, or even a single output operation as a 4+0 configuration. With full digital control, this new generation of controllers ushers in design flexibility by supporting any microprocessor, FPGA, or Digital ASIC rail requirements that include adjustable load setting. The ISL68144 uses the proprietary Renesas linear synthetic digital current modulation scheme to achieve the industry’s best combination of transient response and ease of tuning while addressing the challenges of modern multiphase designs. Device configuration and telemetry monitoring is accomplished using the intuitive Renesas PowerNavigator™ software. The ISL68144 device supports on-chip, nonvolatile memory to store various configuration settings that are user-selectable through pin-strap, giving system designers increased power density to configure and deploy multiple configurations. The device supports an automatic phase add/drop feature to allow maximum efficiency across all load ranges. Thresholds for automatic phase add/drop are user-programmable using PowerNavigator. The ISL68144 supports a comprehensive fault management system to enable the design of highly reliable systems. From a multitiered overcurrent protection scheme to the configurable power-good and output overvoltage/undervoltage fault thresholds and temperature monitoring, almost any need is accommodated. With minimal external components, easy configuration, robust fault management, and highly accurate regulation capability, implementing a high-performance, multiphase regulator has never been easier.

Features

  • Advanced linear digital modulation scheme
  • Zero latency synthetic current control for excellent HF current balance
  • Dual-edge modulation for fastest transient response
  • Auto phase add/drop for excellent load vs efficiency profile
  • PMBus 1.3 support
  • Telemetry - VIN, VOUT, IOUT, power IN/OUT, temperature, and various fault status registers
  • Up to 2MHz bus interface
  • Flexible phase configuration
  • 4+0, 3+1, 2+2 phase operation
  • Operation using less than four phases between two outputs is also supported
  • Diode braking for overshoot reduction
  • Differential remote voltage sensing supports ±0.5% closed loop system accuracy over load, line, and temperature
  • Highly accurate current sensing for excellent load line regulation and accurate OCP
  • Supports ISL99227 60A smart power stages
  • Supports DCR sense with integrated temperature compensation
  • Comprehensive fault management enables high reliability systems
  • Pulse-by-pulse phase current limiting
  • Total output current protection
  • Output and input OV/UV
  • Open voltage sense detect
  • Black box recording capability for faults
  • Intuitive configuration using PowerNavigator
  • NVM to store up to eight configurations
  • Pb-Free (RoHS compliant)

Product Options

Part Number Part Status Pkg. Type Carrier Type MOQ Buy Sample
Active TQFN Tube 60
Availability
Active TQFN Reel 6000
Availability
Active TQFN Reel 250
Availability

Documentation & Downloads

Title Other Languages Type Format File Size Date
Datasheets & Errata
ISL68144 Datasheet Datasheet PDF 2.07 MB
User Guides & Manuals
ISLUSBEVAL1Z User's Manual Manual PDF 257 KB
PowerNavigator User Guide for Digital Multiphase Manual PDF 5.52 MB
Production Configuration Utility User Guide Manual PDF 714 KB
PMBus Interface Install Guide - Win7 x86 and x64 Manual PDF 693 KB
Application Notes & White Papers
Powering IoT Infrastructure Systems with Digital Multiphase White Paper PDF 705 KB
Five Easy Steps to Create a Multi-Load Power Solution White Paper PDF 846 KB
AN1681: Grounding Techniques Application Note PDF 509 KB
AN1684: Nonideality of Ground Application Note PDF 397 KB
PCNs & PDNs
PCN17034 - DatasheetspecificationchangeforListedIntersilISL68144*Products Product Change Notice PDF 333 KB
Downloads
Production Configuration Utility v5.4.139 Software ZIP 120.25 MB
PowerNavigator™ Software v5.4.139 Software ZIP 96.49 MB
Other
PMBus Conversion Software Tool Library ZIP 54.93 MB
ZLHLD Software v2.9 Library ZIP 119.19 MB
CompZL Software v1.5.1 Library ZIP 59.25 MB
PowerPilot Software GUI Library ZIP 435 KB
USB Drivers for the ZLUSBEVAL1Z (Windows XP/Vista) Library ZIP 166 KB
USB Drivers for the ZLUSBEVAL1Z (Windows 7) Library ZIP 1.75 MB
PA17017 - Intersil Device Procurement Status Change - NCNR Removal. ISL68144* and ISL68147* Product Advisory PDF 202 KB

Software & Tool Pages

Title Type Description Company
PowerNavigator Software Software Package Renesas' PowerNavigator™ software allows simple configuration and monitoring of multiple Digital-DC devices using a PC with a USB interface. Renesas