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ISL8270MAIRZ Datasheet(PDF) 1 Page - Intersil Corporation |
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ISL8270MAIRZ Datasheet(HTML) 1 Page - Intersil Corporation |
1 / 51 page 1 DATASHEET Digital DC/DC PMBus 25A Module ISL8270M 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 a need of 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 device SMBus address can be programmed with external resistors. More configuration such as soft-start and fault limits can be easily programmed or changed via 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-pin compact 17mmx19mm HDA module with very low profile height of3.55mm, suitable for automated assembly by standard surface mount equipment. The ISL8270M 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 Applications • Server, telecom, storage, and datacom • Industrial/ATE, and networking equipment • General purpose power for ASIC, FPGA, DSP and memory Related Literature • AN1926 “ISL8270MEVAL1Z Evaluation Board User Guide” FIGURE 1. A COMPLETE DIGITAL SWITCH MODE POWER SUPPLY FIGURE 2. A SMALL PACKAGE FOR HIGH POWER DENSITY ISL8270M VOUT VIN VDD VOUT VSEN+ VSEN- VIN VDRVIN VDRVOUT CIN COUT 1 10 2.2 SALRT SDA SCL SGND PGND NOTE: 1. Only bulk input and output capacitors are required to finish the design . 19m m 17mm 3.55mm July 2, 2015 FN8635.1 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. 1-888-INTERSIL or 1-888-468-3774 | Copyright Intersil Americas LLC 2014, 2015. All Rights Reserved Intersil (and design), PowerNavigator, ChargeMode and Digital-DC are trademarks owned by Intersil Corporation or one of its subsidiaries. All other trademarks mentioned are the property of their respective owners. |
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