The ISL8273MEVAL1Z evaluation board is a 4.7in x 4.8in 8-layer FR4 board with 2oz. copper on all layers that is used to evaluate the ISL8273M digital PMBus™ step-down power module. This evaluation board comes with placeholders for pin-strap resistor population to adjust output voltage, switching frequency, soft-start/stop timing and input UVLO threshold, ASCR gain and residual parameters, and device PMBus address. More configurations, such as sequencing, Digital-DC™ (DDC) bus configuration and fault limits can be easily programmed or changed via the PMBus compliant serial bus interface.

The ISL8273M is a 80A step-down DC/DC power supply module with an integrated digital PWM controller, dual-phase synchronous power switches, inductors, and passives. Only input/output capacitors and minimal passives are needed to finish the design. The 80A of continuous output current can be delivered without a need for airflow or heatsink. The ISL8273M uses ChargeMode™ control (ASCR) architecture, which responds to a transient load within a single switching cycle.

The optional ISLUSBEVAL1Z (USB to PMBus adapter) is provided with this evaluation board, which connects the evaluation board to a PC to activate the PMBus communication interface. The PMBus command set is accessed by using the PowerNavigator™ evaluation software from a PC running Microsoft Windows. The ISL8273MEVAL1Z can operate in pin-strap mode without needing the ISLUSBEVAL1Z adapter or PMBus communication.

Features

  • VIN range of 4.5V to 14V, VOUT adjustable from 0.6V to 2.5V
  • Programmable VOUT, margining, input and output UVP/OVP, IOUT limit, OTP/UTP, soft-start/stop, sequencing and external synchronization
  • Monitor: VIN, VOUT, IOUT, temperature, duty cycle, switching frequency, and faults
  • ChargeMode™ control tunable with PMBus
  • Mechanical switch for enable and power-good LED indicator

Applications

  • Server, telecom, storage, and datacom
  • Industrial/ATE and networking equipment
  • General purpose power for ASIC, FPGA, DSP, and memory

Documentation & Downloads

Title language Type Format File Size Date
Datasheets & Errata
ISL8273M Datasheet Datasheet PDF 2.98 MB
User Guides & Manuals
PowerNavigator User Guide for POL Manual PDF 4.68 MB
Production Configuration Utility User Guide Manual PDF 714 KB
ISL8273MEVAL1Z User Guide Manual PDF 1.76 MB
Downloads
Production Configuration Utility v5.4.139 Software ZIP 120.25 MB
PowerNavigator™ Software v5.4.139 Software ZIP 96.49 MB
ISL8273MEVAL1Z Design Files Design File ZIP 3.62 MB

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