isl65426mrep Intersil Corporation, isl65426mrep Datasheet

isl65426mrep

Manufacturer Part Number

isl65426mrep

Description

Enhanced Product Ep 6.0a Dual Synchronous Buck Regulator With Integrated Mosfets

Manufacturer

Intersil Corporation

Datasheet

1.ISL65426MREP.pdf (3 pages)

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Enhanced Product (EP) 6.0A Dual

Synchronous Buck Regulator with

Integrated MOSFETs

The ISL65426MREP is a high efficiency dual output

monolithic synchronous buck converter operating over an

input voltage range of 2.5V to 5.5V. This single chip power

solution provides two output voltages which are selectable or

externally adjustable from 1.2V to 80% of the supply voltage

while delivering up to 6.0A of total combined output current

when used at T

synchronized 180° out of phase reducing the RMS input

current and ripple voltage.

The ISL65426MREP switches at a fixed frequency of 1MHz

and utilizes current-mode control with integrated

compensation to minimize the size and number of external

components. The internal synchronous power switches are

optimized for good thermal performance, high efficiency,

and eliminate the need for an external Schottky diode.

A unique power block architecture allows partitioning to

support one of four configuration options. One master

power block is associated with each synchronous converter

channel. Four floating slave power blocks allow the user to

assign them to either channel. Proper external

configuration of the power blocks is verified internally prior

to soft-start initialization.

Independent enable inputs allow for synchronization or

sequencing soft-start intervals of the two converter

channels. A third enable input allows additional sequencing

for multi-input bias supply designs. Individual power good

indicators (PG1, PG2) signal when output voltage is within

regulation window.

The ISL65426MREP integrates protection for both

synchronous buck regulator channels. The fault conditions

include overcurrent, undervoltage, and IC thermal monitor.

High integration contained in a thin Quad Flat No-lead

(QFN) package makes the ISL65426MREP an ideal choice

to power many of today’s small form factor applications. A

single chip solution for large scale digital ICs, like field

programmable gate arrays (FPGA), requiring separate core

and I/O voltages.

Device Information

The specifications for an Enhanced Product (EP) device are

defined in a Vendor Item Drawing (VID), which is controlled

by the Defense Supply Center in Columbus (DSCC). “Hot-

links” to the applicable VID and other supporting application

information are provided on our website.

of +125°C or less. The two PWMs are

Data Sheet

1-888-INTERSIL or 1-888-468-3774

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.

Features

• Specifications per DSCC VID V62/07639

• Full Mil-Temp Electrical Performance from -55°C to +125°C

• Controlled Baseline with One Wafer Fabrication Site and

• Full Homogeneous Lot Processing in Wafer Fab

• Current Density Validated per MIL-PRF-38535

• Full Traceability Through Assembly and Test by

• Enhanced Process Change Notification

• Enhanced Obsolescence Management

• Eliminates Need for Up-Screening a COTS Component

• High Efficiency of up to 90%

• Fixed Frequency: 1MHz

• Operates From 2.5V to 5.5V Supply

• ±2.0% Reference

• Flexible Output Voltage Options

• Power Blocks are Rated at:

• Ultra-Compact DC/DC Converter Design

• PWMs Synchronized 180

• Independent Enable Inputs and System Enable

• Independent Output Digital Soft-Start

• Power Good Output Voltage Monitor

• Short-Circuit and Thermal-Overload Protection

• Overcurrent and Undervoltage Protection

Applications

• FPGA, CPLD, DSP, and CPU Core and I/O Voltages

• Point-of-Load Regulation in Distributed Power Systems

Ordering Information

NOTES:

VENDOR PART

ISL65426MREP V62/07639-01XB -55 to +125 50 Ld 5x10

1. Add -TK suffix for 1000 piece tape and reel. Please refer to TB347 for

2. Devices must be procured to the VENDOR PART NUMBER.

One Assembly/Test Site

Date/Trace Code Assignment

- Programmable 2-Bit VID Input

- Adjustable Output From 1.2V to 4.0V

- 1A typ for T

- 0.7A typ for T

(Notes 1, 2)

NUMBER

details on reel specifications.

October 29, 2007

All other trademarks mentioned are the property of their respective owners.

Intersil (and design) is a registered trademark of Intersil Americas Inc.

VENDOR ITEM

< +125°C and VIN Range 4.0V to 5.5V

DRAWING

< +125°C and VIN Range 2.5V to 5.5V

Out of Phase

ISL65426MREP

RANGE

TEMP.

(°C)

QFN

PACKAGE

FN6575.0

L50.5x10

DWG. #

PKG.

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isl65426mrep Summary of contents

Page 1

... The two PWMs are J synchronized 180° out of phase reducing the RMS input current and ripple voltage. The ISL65426MREP switches at a fixed frequency of 1MHz and utilizes current-mode control with integrated compensation to minimize the size and number of external components. The internal synchronous power switches are optimized for good thermal performance, high efficiency, and eliminate the need for an external Schottky diode ...

Page 2

... PGND 4 5 LX1 LX1 6 7 PVIN1 PGND PVIN2 8 LX2 9 PGND 10 11 PGND 12 LX3 PVIN3 13 14 VCC 15 VCC 16 VCC 17 PGND ISL65426MREP 43 PGND 42 PGND 41 PGND 40 PGND 39 38 LX6 37 LX6 36 PVIN6 35 PVIN5 34 LX5 PGND 33 PGND 32 31 LX4 30 PVIN4 29 PGND 28 PGND ...

Page 3

... However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries. For information regarding Intersil Corporation and its products, see www.intersil.com 3 ISL65426MREP A B 0.15 (4X) VIEW " ...

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