ISL65426EVAL1Z Intersil, ISL65426EVAL1Z Datasheet

ISL65426EVAL1Z

Manufacturer Part Number

ISL65426EVAL1Z

Description

ISL65426 EVAL BOARD 1 - RoHS COMPLIANT - QFN

Manufacturer

Intersil

Datasheet

1.ISL65426EVAL1Z.pdf (22 pages)

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6A Dual Synchronous Buck Regulator

with Integrated MOSFETs

The ISL65426 is a high efficiency dual output monolithic

synchronous buck converter operating over an input

voltage range of 2.375V to 5.5V. This single chip power

solution provides two output voltages which are selectable

or externally adjustable from 1V to 80% of the supply

voltage while delivering up to 6A of total output current. The

two PWMs are synchronized 180

the RMS input current and ripple voltage.

The ISL65426 switches at a fixed frequency of 1MHz and

utilizes current-mode control with integrated compensation

to minimize the size and number of external components

and provide excellent transient response. 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 of six

1A capable blocks 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 ISL65426 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 ISL65426 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.

out of phase reducing

Data Sheet

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

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

Features

• High Efficiency: Up to 95%

• Fixed Frequency: 1MHz

• Operates From 2.375V to 5.5V Supply

• ±1% Reference

• Flexible Output Voltage Options

• User-Partitioned Power Blocks

• Ultra-Compact DC/DC Converter Design

• PWMs Synchronized 180

• Independent Enable Inputs and System Enable

• Stable All Ceramic Solutions

• Excellent Dynamic Response

• Independent Output Digital Soft-Start

• Power Good Output Voltage Monitor

• Short-Circuit and Thermal-Overload Protection

• Overcurrent and Undervoltage Protection

• Pb-Free Plus Anneal Available (RoHS Compliant)

Applications

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

• Low-Voltage, High-Density Distributed Power Systems

• Point-of-Load Regulation

• Distributed Power Systems

• Set-Top Boxes

Ordering Information

*Add “-T” suffix for tape and reel.

NOTE: Intersil Pb-free plus anneal products employ special Pb-free

material sets; molding compounds/die attach materials and 100% matte

tin plate termination finish, which are RoHS compliant and compatible

with both SnPb and Pb-free soldering operations. Intersil Pb-free

products are MSL classified at Pb-free peak reflow temperatures that

meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020.

ISL65426HRZ* ISL65426 HRZ -10 to +100 50 Ld 5x10

November 14, 2006

- Programmable 2-Bit VID Input

- Adjustable Output From 0.6V to 4.0V

- Xilinx Spartan III

- Altera Stratix

- Actel Fusion

NUMBER

(Note)

Virtex 4

PART

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

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

MARKING

PART

LatticeSC

Stratix II

, Virtex II

Out of Phase

RANGE

TEMP.

(°C)

, LatticeEC

Cyclone

Virtex II Pro

QFN

PACKAGE

ISL65426

(Pb-free)

Cyclone II

FN6340.1

L50.5x10

DWG. #

PKG.

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