intersil ISL6207 DATA SHEET

ISL6207

Data Sheet December 2, 2005

High Voltage Synchronous Rectified Buck MOSFET Driver

The ISL6207 is a high frequency, dual MOSFET driver, optimized to drive two N-Channel power MOSFETs in a synchronous-rectified buck converter topology in mobile computing applications. This driver, combined with an Intersil Multi-Phase Buck PWM controller, such as ISL6223, ISL6215, and ISL6216, forms a complete single-stage core-voltage regulator solution for advanced mobile microprocessors.

The ISL6207 features 4A typical sink current for the lower gate driver. The 4A typical sink current is capable of holding the lower MOSFET gate during the Phase node rising edge to prevent the shoot-through power loss caused by the high dv/dt of the Phase node. The operation voltage matches the 30V breakdown voltage of the MOSFETs commonly used in mobile computer power supplies.

The ISL6207 also features a three-state PWM input that, working together with most of Intersil multiphase 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.

The ISL6207 has the capacity to efficiently switch power MOSFETs at frequencies up to 2MHz. Each driver is capable of driving a 3000pF load with a 15ns propagation delay and less than a 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.

FN9075.8

Features

• Drives Two N-Channel MOSFETs

• Adaptive Shoot-Through Protection

• 30V Operation Voltage

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

• Supports High Switching Frequency

- Fast Output Rise Time

- Short Propagation Delays

• Three-State PWM Input for Power Stage Shutdown

• Internal Bootstrap Schottky Diode

• QFN Package:

- Compliant to JEDEC PUB95 MO-220 QFN - Quad Flat No Leads - Package Outline

- Near Chip Scale Package footprint, which improves PCB efficiency and has a thinner profile

• Pb-Free Plus Anneal Available (RoHS Compliant)

Applications

• Core Voltage Supplies for Intel and AMD® Mobile Microprocessors

• High Frequency Low Profile DC/DC Converters

• High Current Low Output Voltage DC/DC Converters

• High Input Voltage DC/DC Converters

Related Literature

• Technical Brief TB363 “Guidelines for Handling and Processing Moisture Sensitive Surface Mount Devices (SMDs)”

• Technical Brief TB389 “PCB Land Pattern Design and Surface Mount Guidelines for QFN Packages”

Pinouts

ISL6207 (SOIC-8)

TOP VIEW

UGATE

BOOT

PWM

GND

Intel® is a registered trademark of Intel Corporation.

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

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

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

PHASE

VCC

LGATE

AMD® is a registered trademark of Advanced Micro Devices, Inc.

BOOT

PWM

ISL6207 (QFN)

TOP VIEW

UGATE

GND

PHASE

LGATE

VCC

ISL6207

Ordering Information

PART

NUMBER

ISL6207CB ISL6207CB -10 to 85 8 Lead SOIC M8.15

ISL6207CBZ (Note)

ISL6207CBZA (Note)

ISL6207CR 207C -10 to 85 8 Lead 3x3 QFN L8.3x3

ISL6207CRZ (Note)

ISL6207CRZA (Note)

ISL6207HBZ (Note)

ISL6207HRZ (Note)

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.

PAR T

MARKING

ISL6207CBZ -10 to 85 8 Lead SOIC

07CZ -10 to 85 8 Lead 3x3 QFN

TEMP.

RANGE (°C) PACKAGE

(Pb-free)

ISL6207HBZ -10 to 100 8 Ld SOIC (Pb-

free)

07HZ -10 to 100 8 Ld 3x3 QFN

(Pb-free)

PKG.

DWG. #

M8.15

L8.3x3

M8.15

L8.3x3

ISL6207 Block Diagram

VCC

PWM

VCC

10K

CONTROL

LOGIC

SHOOT-

THROUGH

PROTECTION

VCC

THERMAL PAD (FOR QFN PACKAGE ONLY)

BOOT

UGATE

PHASE

LGATE

GND

FN9075.8

December 2, 2005

ISL6207

Typical Application - Two Phase Converter Using ISL6207 Gate Drivers

BAT

+5V

DRIVE

ISL6207

BOOT

UGATE

PHASE

LGATE

BAT

PGOOD

VID

+5V

VSEN

CONTROL

VCC

MAIN

COMP

PWM1

PWM2

ISEN1

ISEN2

VCC

PWM

+5V

CORE

DACOUT

GND

PWM

VCC

DRIVE

ISL6207

BOOT

UGATE

PHASE

LGATE

FN9075.8

December 2, 2005

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