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ISL8270MAIRZ Datasheet(PDF) 1 Page - Intersil Corporation

Part # ISL8270MAIRZ
Description  Digital DC/DC PMBus 25A Module
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Manufacturer  INTERSIL [Intersil Corporation]
Direct Link  http://www.intersil.com/cda/home
Logo INTERSIL - Intersil Corporation

ISL8270MAIRZ Datasheet(HTML) 1 Page - Intersil Corporation

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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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