ISL6605 Intersil Corporation, ISL6605 Datasheet

ISL6605

Manufacturer Part Number

ISL6605

Description

Synchronous Rectified MOSFET Driver

Manufacturer

Intersil Corporation

Datasheet

1.ISL6605.pdf (8 pages)

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Current page: 1 of 8
Download datasheet (265Kb)

Synchronous Rectified MOSFET Driver

The ISL6605 is a high frequency, MOSFET driver optimized

to drive two N-Channel power MOSFETs in a synchronous-

rectified buck converter topology. This driver combined with

an Intersil HIP63xx or ISL65xx Multi-Phase Buck PWM

controller forms a complete single-stage core-voltage

regulator solution with high efficiency performance at high

switching frequency for advanced microprocessors.

The IC is biased by a single low voltage supply (5V) and

minimizes low driver switching losses for high MOSFET gate

capacitance and high switching frequency applications.

Each driver is capable of driving a 3000pF load with a 8ns

propagation delay and less than 10ns transition time. This

product implements bootstrapping on the upper gate with an

internal bootstrap Schottky diode, reducing implementation

cost, complexity, and allowing the use of higher

performance, cost effective N-Channel MOSFETs. Adaptive

shoot-through protection is integrated to prevent both

MOSFETs from conducting simultaneously.

The ISL6605 features 4A typical sink current for the lower

gate driver, which is capable of holding the lower MOSFET

gate during the Phase node rising edge to prevent shoot-

through power loss caused by the high dv/dt of the Phase

node.

The ISL6605 also features a Three-State PWM input that,

working together with Intersil multi-phase PWM controllers,

will prevent a negative transient on the output voltage when

the output is being shut down. This feature eliminates the

Schottky diode that is usually seen in a microprocessor

power system for protecting the microprocessor from

reversed-output-voltage damage.

Ordering Information

ISL6605CB

ISL6605CB-T

ISL6605CR

ISL6605CR-T

ISL6605IB

ISL6605IB-T

ISL6605IR

ISL6605IR-T

ISL6558EVAL2

PART NUMBER

8 Ld SOIC Tape and Reel

8 Ld QFN Tape and Reel

8 Ld SOIC Tape and Reel

8 Ld QFN Tape and Reel

Evaluation Platform (ISL6558IR+ISL6605IR)

TEMP. RANGE

-40 to 85

0 to 70

(

8 Ld 3x3 QFN L8.3x3

Data Sheet

PACKAGE

8 Ld SOIC

M8.15

PKG. NO.

1-888-INTERSIL or 321-724-7143

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

Features

• Drives Two N-Channel MOSFETs

• Adaptive Shoot-Through Protection

• 0.4Ω On-Resistance and 4A Sink Current Capability

• Supports High Switching Frequency

• Three-State PWM Input for Power Stage Shutdown

• Internal Bootstrap Schottky Diode

• Low Bias Supply Current (5V, 30µA)

• Enable Input

• QFN Package

Applications

• Core Voltage Supplies for Intel® and AMD®

• High Frequency Low Profile DC-DC Converters

• High Current Low Voltage DC-DC Converters

• Synchronous Rectification for Isolated Power Supplies

Related Literature

• Technical Brief TB363 “Guidelines for Handling and

Pinouts

- Fast Output Rise Time

- Propagation Delay 8ns

- Compliant to JEDEC PUB95 MO-220 QFN-Quad Flat

- Near Chip-Scale Package Footprint; Improves PCB

Microprocessors

Processing Moisture Sensitive Surface Mount Devices

(SMDs)”

No Leads-Product Outline.

Efficiency and Thinner in Profile.

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

August 2003

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

UGATE

BOOT

PWM

GND

BOOT

PWM

ISL6605 8 LEAD (SOIC)

ISL6605 8 LEAD (QFN)

TOP VIEW

PHASE

VCC

LGATE

VCC

ISL6605

FN9091.2

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