NOTICE - The following device(s) are recommended alternatives:
NRND - No Recommended Replacements Available
The ISL8277M is not recommended for new designs and has no alternative product available.

The ISL8277M is a 25A step-down DC/DC power supply module with an integrated digital PWM controller, synchronous power switches, an inductor, and passives. Only bulk input and output capacitors are needed to finish the design. The 25A of continuous output current can be delivered without a need of airflow or a heatsink. The thermally enhanced HDA module is capable of dissipating heat directly into the PCB. The ISL8277M uses ChargeMode™ control architecture, which responds to a transient load within a single switching cycle. The ISL8277M comes with a preprogrammed configuration for operating in a pin-strap mode. Output voltage, switching frequency, and device SMBus address can be programmed with external resistors. More configuration such as soft-start and fault limits can be easily programmed or changed using the PMBus compliant serial bus interface. PMBus can be used to monitor voltages, current, temperatures, and fault status. The ISL8277M is supported by PowerNavigator™ software, a graphical user interface (GUI) that can be used to configure modules to a desired solution. The ISL8277M is available in a 41-pin compact 17mmx19mm HDA module with very low profile height of 3. 6mm, suitable for automated assembly by standard surface mount equipment. The ISL8277M is RoHS compliant by exemption.

Features

  • Complete digital switch mode power supply
  • Wide VIN range: 4.5V to 14V
  • Programmable VOUT range: 0.6V to 5V
  • PMBus compliant I2C communication interface
  • Programmable VOUT, margining, UV/OV, IOUT limit, soft-start/stop, sequencing, and external synchronization
  • Monitor: VIN, VOUT, IOUT, temperature, duty cycle, switching frequency, and faults
  • ChargeMode control architecture
  • ±1.0% VOUT accuracy over line, load, and temperature
  • Power-good indicator
  • Over-temperature protection
  • Internal nonvolatile memory and fault logging
  • Patented thermally enhanced HDA package
  • Intuitive configuration via PowerNavigator

Product Options

Part Number Part Status Pkg. Type Carrier Type MOQ Buy Sample
ISL8277MAIRZ
Obsolete Module Tray 6
Availability
ISL8277MAIRZ-T
Obsolete Module Reel 500
Availability
ISL8277MAIRZ-T1
Obsolete Module Reel 100
Availability

Documentation & Downloads

Title Other Languages Type Format File Size Date
Datasheets & Errata
ISL8277M Datasheet Datasheet PDF 2.58 MB
User Guides & Manuals
ISLUSBEVAL1Z User's Manual Manual PDF 257 KB
PowerNavigator User Guide for POL Manual PDF 4.68 MB
ISL8277MEVAL1Z User Guide Manual PDF 1.38 MB
ISLUSPLUS-UC2DEMO1Z User Guide Manual PDF 1.82 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
Five Easy Steps to Create a Multi-Load Power Solution White Paper PDF 846 KB
How Green is Your Cloud? White Paper PDF 295 KB
AN1681: Grounding Techniques Application Note PDF 509 KB
AN1684: Nonideality of Ground Application Note PDF 397 KB
PCNs & PDNs
PCN17047 - Alternate Bond Wire Material for Controllers used in the listed Intersil HDA modules Product Change Notice PDF 83 KB
Downloads
Production Configuration Utility v5.4.139 Software ZIP 120.25 MB
PowerNavigator™ Software v5.4.139 Software ZIP 96.49 MB
ISLUSPLUS-UC2DEMO1Z Design Files Design File ZIP 1.89 MB
Other
Industrial Power Management Brochure ( R16CL0001EJ0200 ) 日本語 Brochure PDF 3.13 MB
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 7) Library ZIP 1.75 MB
USB Drivers for the ZLUSBEVAL1Z (Windows XP/Vista) Library ZIP 166 KB
Power Module Board Level Reliability Report Other PDF 187 KB
Digital-DC Frequently Asked Questions (FAQ) Other PDF 194 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

Boards & Kits

Part Number Title Type Company
ISL8277MEVAL1Z Digital DC/DC PMBus Module Evaluation Board Evaluation Renesas
ISL8278MEVAL1Z Digital DC/DC PMBus Module Evaluation Board Evaluation Renesas
ISLUSPLUS-UC1DEMO1Z Power Supply Reference Demo Board for the Xilinx Zynq Ultrascale+™ MPSoC Demonstration Renesas
ISLUSPLUS-UC2DEMO1Z Power Supply Reference Demo Board for the Xilinx Zynq Ultrascale+™ MPSoC Demonstration Renesas