ISL8272M Datasheet, PDF (1/55 Pages) Intersil Corporation – 50A Digital DC/DC PMBus Power Module

DATASHEET
50A Digital DC/DC PMBus Power Module
ISL8272M
The ISL8272M is a 50A step-down PMBus compliant digital
power module. Integrated in the module is a high performance
digital PWM controller, dual-phase power MOSFETs, inductors
and the passives. This high efficiency power module is capable
of delivering 50A without the need for airflow and heatsink.
The ISL8272M can be placed in a current sharing
configuration with up to 4 modules in parallel to deliver 200A
continuous current.
The ISL8272M operates with the ChargeMode™ control
architecture, which responds to a transient load within a single
switching cycle. The ISL8272M comes with operating in a pin
strap mode; output voltage, switching frequency device, SMBus
address, input UVLO, soft-start/stop and current sharing can be
programmed through external resistors. More configuration such
as fault limits, fault response, margining and sequencing can be
easily programmed via the PMBus interface. PMBus can be used
to monitor voltages, currents, temperatures and fault status. The
ISL8272M is supported by the PowerNavigator™ software, a
graphical user interface (GUI) that can be used to configure
modules to a desired solution.
The ISL8272M is built in a compact (18mmx23mmx7.5mm)
and low profile overmolded HDA package, suitable for
automated assembly by standard surface mount equipment.
Features
• Complete digital switch mode power supply
• Wide input voltage range: 4.5V to 14V
• Programmable output voltage range: 0.6V to 5V
• PMBus compliant communication interface
• Programmable V_OUT, margining, UV/OV, UC/OC, UT/OT,
soft-start/stop, sequencing and external synchronization
• Monitor of V_IN, V_OUT, I_OUT, temperature, duty cycle, switching
frequency, power-good and faults
• Fast response ChargeMode^TM control architecture
• Multiphase current sharing with up to 4 modules
• ±1.0% V_OUT accuracy over line, load and temperature
• Internal nonvolatile memory and fault logging
• 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
• UG003, “ISL8272MEVAL1Z Evaluation Board User Guide”
• UG004, “ISL8272MEVAL2Z Evaluation Board User Guide”
VIN
CIN
ENABLE
VIN
VDD
EN
VR5
10µF 10µF
VR6
100k 
2x10µF
6.65k 
VDRV
VCC
VDRV1
VMON
ISL8272M
VOUT
VSENP
VSENN
VR
VR55
SGND
PGND
SCL
SDA
SALRT
VOUT
COUT
23mm
PMBUS
INTERFACE
7.5mm
18mm
NOTE:
1. Figure 1 represents a typical implementation of the ISL8272M. For PMBus
operation, it is recommended to tie the enable pin (EN) to SGND.
FIGURE 1. 50A APPLICATION CIRCUIT
FIGURE 2. A SMALL PACKAGE FOR HIGH POWER DENSITY
January 14, 2015
1
FN8670.2
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), ChargeMode, PowerNavigator 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.