Overview

The ISL8270M is a 25A step-down DC/DC power supply module with 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 the need for airflow or a heatsink. The thermally enhanced HDA module is capable of dissipating heat directly into the PCB. The ISL8270M uses ChargeMode™ control architecture, which responds to a transient load within a single switching cycle. The ISL8270M comes with a preprogrammed configuration for operating in a pin strap mode: output voltage, switching frequency, and the 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 ISL8270M is supported by PowerNavigator™ software, a Graphical User Interface (GUI) that can be used to configure modules to a desired solution. The ISL8270M is available in a 40 Ld compact 17mmx19mm HDA module with very low profile height of 3. 55mm, suitable for automated assembly by standard surface mount equipment. The ISL8270M is RoHS compliant by exemption.

ISL8270M Functional Diagram
ISL8270M Functional Diagram
  • 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

Documentation

Design & Development

Software & Tools
PowerNavigator Software
Renesas' PowerNavigator™ software allows simple configuration and monitoring of multiple Digital-DC devices using a PC with a USB interface.
Downloads
Production Configuration Utility User GuideProduction Configuration Utility v5.4.139PowerNavigator™ Software v5.4.139PowerNavigator User Guide for POL
 Monitor Debugger/RAM Monitor Renesas
1 item

Software Downloads
Type Title Date
Software & Tools - Other
Production Configuration Utility v5.4.139
Log in to Download ZIP 120.25 MB
Software & Tools - Software
PowerNavigator™ Software v5.4.139
Log in to Download ZIP 96.49 MB
2 items
ISL8270MEVAL1Z Digital Power Module Evaluation Board

ISL8270MEVAL1Z

Evaluation
Learn More

Digital DC/DC PMBus 25A Module Evaluation Board

Easily evaluate the features of the ISL8270M digital DC/DC PMBus 25A module, including compensation-free ChargeMode™ control, soft-start delay and ramp times, supply...

Featured Documents:
ISL8270MEVAL1Z 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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Diagram of ECAD Models

Product Options

    Processing table
    Pkg. Type
    Carrier Type
    MOQ
    Buy / Sample
    Part Number
    ISL8270MAIRZ
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    		Module Tray 42
    ISL8270MAIRZ-T
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    view_in_ar
    		Module Reel 500
    ISL8270MBIRZ
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    memory
    view_in_ar
    		Module Tray 42
    ISL8270MBIRZ-T
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    memory
    view_in_ar
    		Module Reel 500
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