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.

特性 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 VOUT, margining, UV/OV, UC/OC, UT/OT,

soft-start/stop, sequencing and external synchronization

? Monitor of VIN, VOUT, IOUT, temperature, duty cycle, switching

frequency, power-good and faults

? Fast response ChargeModeTM control architecture

? Multiphase current sharing with up to 4 modules

? ±1.0 VOUT 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