Datasheet > L6743_08

L6743_08

更新时间： 2024-09-09 03:49:55

品牌	Logo	应用领域
意法半导体 - STMICROELECTRONICS		驱动器
页数	文件大小	规格书
17页	354K
描述
High current MOSFET driver

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中文翻译

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数据手册

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L6743_08 数据手册

L6743

L6743Q

High current MOSFET driver

Features

■ Dual MOSFET driver for synchronous rectified

converters

■ High driving current for fast external MOSFET

switching

SO-8

DFN10 3x3

■ Integrated bootstrap diode

■ High frequency operation

■ Enable pin

Combined with ST PWM controllers, the driver

allows implementing complete voltage regulator

solutions for modern high-current CPUs and

DCDC conversion in general. L6743, L6743Q

embeds high-current drivers for both high-side

and low-side MOSFETS. The device accepts

flexible power supply (5 V to 12 V) to optimize the

gate-drive voltage for High-Side and Low-Side

maximizing the System Efficiency.

■ Adaptive dead-time management

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

■ High-impedance (HiZ) management for output

stage shutdown

■ Preliminary OV protection

■ SO-8 and DFN10 3x3 packages

The Bootstrap diode is embedded saving the use

of external diodes. Anti shoot-through

management avoids high-side and low-side

MOSFET to conduct simultaneously and,

combined with Adaptive Dead-Time control,

minimizes the LS body diode conduction time.

Applications

■ High current VRM / VRD for desktop / server /

workstation CPUs

■ High current and high efficiency DC / DC

converters

L6743, L6743Q embeds Preliminary OV

Protection: after Vcc overcomes the UVLO and

while the device is in HiZ, the LS MOSFET is

turned ON to protect the load in case the output

voltage overcomes a warning threshold protecting

the output against HS failures.

Description

L6743, L6743Q is a flexible, high-frequency dual-

driver specifically designed to drive N-channel

MOSFETs connected in synchronous-rectified

buck topology.

The driver is available is SO-8 and DFN10 3x3

packages

Table 1.

Device summary

Order code

Package

Packaging

L6743

L6743TR

L6743Q

SO-8

Tube

Tape and reel

Tube

DFN10

L6743QTR

Tape and reel

June 2008

Rev 2

1/17

www.st.com

12 3 4 5 6 7...17

中文翻译

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