L6747ATR datasheet(1/15 Pages) STMICROELECTRONICS

部品番号	L6747ATR

部品情報	High current MOSFET driver

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メーカー	STMICROELECTRONICS [STMicroelectronics]

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March 2010

Doc ID 17126 Rev 1

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15

L6747A

High current MOSFET driver

Features

■ Dual MOSFET driver for synchronous rectified

converters

■ High driving current for fast external MOSFET

switching

■ Integrated bootstrap diode

■ High frequency operation

■ Enable pin

■ Adaptive dead-time management

■ Flexible gate-drive: 5 V to 12 V compatible

■ High-impedance (HiZ) management for output

stage shutdown

■ Preliminary overvoltage (OV) protection

■ VFDFPN8 3x3 mm package

Applications

■ High current VRM / VRD for desktop / server /

workstation CPUs

■ High current and high efficiency DC-DC

converters

Description

The L6747A is a flexible, high-frequency dual-

driver specifically designed to drive N-channel

MOSFETs connected in synchronous-rectified

buck topology.

Combined with ST PWM controllers, the driver

allows the implementation of complete voltage

regulator solutions for modern high-current CPUs

and for DC-DC conversion in general.

The L6747A embeds high-current drivers for both

high-side and low-side MOSFETS. The device

accepts a flexible power supply of 5 V to 12 V.

This allows optimization of the high-side and low-

side gate-drive voltage to maximize system effi-

ciency.

The embedded bootstrap diode eliminates the

need for external diodes. Anti shoot-through man-

agement prevents the high-side and low-side

MOSFETs from conducting simultaneously and,

combined with adaptive dead-time control, mini-

mizes the LS body diode conduction time.

The L6747A features preliminary OV protection to

protect the load from dangerous overvoltage due

to MOSFET failures at startup.

The L6747A device is available in a VFDFPN8

3x3 mm package.

VFDFPN8 3x3 mm

Table 1.

Device summary

Order code

Package

Packing

L6747A

VFDFPN8

Tube

L6747ATR

VFDFPN8

Tape and reel

www.st.com

同様の部品番号 - L6747ATR

メーカー	部品番号	データシート	部品情報
STMicroelectronics	L6747C	341Kb / 15P	High current MOSFET driver 23-Apr-2010

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