NOTICE - The following device(s) are recommended alternatives:
NRND - No Recommended Replacements Available
The ISL8278M is not recommended for new designs and has no alternative product available.

The ISL8278M is a 33A 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 33A of continuous output current can be delivered without need for airflow or a heatsink. The thermally enhanced HDA module is capable of dissipating heat directly into the PCB. The ISL8278M uses ChargeMode™ control architecture, which responds to a transient load within a single switching cycle. The ISL8278M 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 configurations, such as soft-start and fault limits can be easily programmed or changed using a PMBus compliant serial bus interface. PMBus can be used to monitor voltages, current, temperatures, and fault status. The ISL8278M is supported by PowerNavigator™ software, a Graphical User Interface (GUI) that can be used to configure modules for a desired solution. The ISL8278M is available in a 41 Ld compact 17mmx19mm HDA module with a very low profile height of 3. 6mm, suitable for automated assembly by standard surface mount equipment. The ISL8278M 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 using PowerNavigator

Product Options

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

Documentation

Title language Type Format File Size Date
Datasheets & Errata
ISL8278M Datasheet Datasheet PDF 2.56 MB
User Guides & Manuals
ISLUSBEVAL1Z User's Manual Manual PDF 257 KB
PowerNavigator User Guide for POL Manual PDF 4.68 MB
ISL8278MEVAL1Z User Guide Manual PDF 1.32 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
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
How Green is Your Cloud? White Paper PDF 295 KB
PCNs & PDNs
PCN17047 - Alternate Bond Wire Material for Controllers used in the listed Intersil HDA modules Product Change Notice PDF 83 KB
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
PLC21013 - End of Life Notice Product Life Cycle Notice PDF 215 KB

Downloads

Title language Type Format File Size Date
Software
PowerNavigator™ Software v5.4.139 Software ZIP 96.49 MB
Production Configuration Utility v5.4.139 Software ZIP 120.25 MB
Other
ISL8278MEVAL1Z Design Files Design File ZIP 886 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