MAX8523 Datasheet

IC型號：
MAX8523
PDF描述：
"High-Speed, Dual-Phase Gate Driver for Multiphase, Step-Dow...
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芯片廠家：
Maxim

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19-2860; Rev 0; 4/03

-QSOP

High-Speed, Dual-Phase Gate Driver for

Multiphase, Step-Down Converters

General Description

Features

6A Peak Gate-Drive Current

Up to 1.2MHz Operation

Up to 6.5V Gate-Drive Voltage

0.5鈩?0.95鈩?Low-Side Drivers

Capable of 30A Output per Phase

Adaptive Shoot-Through Protection

User-Programmable Delay Time

TTL and CMOS Input Compatible

UVLO for Proper Sequencing

Flexible 2- to 8-Phase Implementation with

MAX8524 and MAX8525

Space-Saving (4.9mm

鉁?/div>

6mm) 16-Pin QSOP

Package

The MAX8523 dual-phase gate driver, along with the

MAX8524*/MAX8525 multiphase controllers, provides

flexible 2- to 8-phase CPU core-voltage supplies. The

0.5鈩?0.95鈩?driver resistance allows up to 30A output

current per phase.

Each MOSFET driver in the MAX8523 is capable of dri-

ving 3000pF capacitive loads with only 15ns propaga-

tion delay and 11ns typical rise and fall times, allowing

operations up to 1.2MHz per phase. Adaptive dead

time controls low-side MOSFET turn-on, and user-pro-

grammable dead time controls high-side MOSFET turn-

on. This maximizes converter efficiency while allowing

operation with a variety of MOSFETs and controller ICs.

An undervoltage lockout (UVLO) circuit allows proper

power-on sequencing. PWM_ signal inputs are both

TTL and CMOS compatible.

The MAX8523 is available in a space-saving 16-pin QSOP

package, and specified for -40擄C to +85擄C operation.

Pentium is a trademark of Intel Corp.

________________________________________________________________

Maxim Integrated Products

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at

1-888-629-4642, or visit Maxim鈥檚 website at www.maxim-ic.com.

MAX8523

Applications

Core Voltage Supplies for Pentium鈩?IV

Microprocessors

Servers and Workstations

Desktop Computers

Voltage Regulator Modules (VRMs)

DC-to-DC Regulator Modules

Switches, Routers, and Storage

PART

MAX8523EEE

Ordering Information

TEMP RANGE

-40擄C to +85擄C

PIN-PACKAGE

16 QSOP

*Future

product. Contact factory for availability.

Typical Operating Circuit

3V TO 13.2V

+4.5V TO +6.5V GATE

DRIVE SUPPLY

PHASE 1 OUTPUT

BST1

DH1

LX1

BST2

DH2

PHASE 2 OUTPUT

PHASE 2 PWM INPUT

PHASE 1 PWM INPUT

MAX8523

DL1

PGND1

PV1

PV2

DLY

LX2

DL2

PGND2

PWM2

PWM1

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