Datasheet > LTC3901

LTC3901

更新时间： 2024-09-21 14:57:59

品牌	Logo	应用领域
亚德诺 - ADI		驱动驱动器转换器
页数	文件大小	规格书
16页	233K
描述
用于推挽式和全桥式转换器的副端同步驱动器

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中文翻译

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LTC3901 数据手册

LTC3901

Secondary Side

Synchronous Driver for Push-Pull

and Full-Bridge Converters

FEATURES

DESCRIPTIO

The LTC^®3901 is a secondary side synchronous rectifier

driver designed to be used in isolated push-pull and full-

bridge converter power supplies. The chip drives two

external N-channel MOSFETs and accepts a transformer-

generated bipolar input to maintain sychronization with

the primary side controller.

■

N-Channel Synchronous MOSFET Driver

■

Programmable Timeout

■

Reverse Inductor Current Sense

■

Gate Drive Transformer Synchronization

Sequence Monitor

■

Wide V_CCSupply Range: 4.5V to 11V

■

15ns Rise/Fall Times at V_CC= 5V, C_L= 4700pF

The LTC3901 provides a full range of protection features

for the external MOSFETs. A programmable timeout func-

tion is included that disables both drivers when the syn-

chronization signal is missing or incorrect. Additionally,

the chip senses the output inductor current through the

drain-source resistance of the two MOSFETs, turning off

theMOSFETsiftheinductorcurrentreverses.TheLTC3901

also shuts off the drivers if the supply is low or if the

synchronization sequence is incorrect.

■

Undervoltage Lockout

Small 16-Lead SSOP Package

■

APPLICATIO S

■

48V Input Isolated DC/DC Converters

■

Isolated Telecom Power Supplies

■

Distributed Power Step-Down Converters

■

Industrial Control System Power Supplies

■

Automotive and Heavy Equipment

, LTC and LT are registered trademarks of Linear Technology Corporation.

All other trademarks are the property of their respective owners.

TYPICAL APPLICATIO

ISOLATION

BARRIER

OUT

12V

OUT

36V TO 72V

–

CSE

GND

LTC3901

DRVA

DRVB

–

CSF

LTC3723

PUSH-PULL

CONTROLLER

CSF

PGND

COMP V SDRA SDRB

TIMER

SYNC

OUT

LT4430 OR LT1431

OPTOCOUPLER

DRIVER

COMP

3901 F01

Figure 1. Simplified Isolated Push-Pull Converter

3901f

12 3 4 5 6 7...16

中文翻译

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与LTC3901相关器件

型号	品牌	获取价格	描述	数据表
LTC3901EGN	Linear	获取价格	Secondary Side Synchronous Driver for Push-Pull and Full-Bridge Converters
LTC3901EGN#PBF	Linear	获取价格	LTC3901 - Secondary Side Synchronous Driver for Push-Pull and Full-Bridge Converters; Pack
LTC3901EGN#TRPBF	Linear	获取价格	LTC3901 - Secondary Side Synchronous Driver for Push-Pull and Full-Bridge Converters; Pack
LTC4000	Linear	获取价格	用于电池充电和电源管理的高电压、大电流控制器
LTC4000	ADI	获取价格	用于电池充电和电源管理的高电压、大电流控制器
LTC4000-1	Linear	获取价格	High Voltage High Current Controller for Battery Charging with Maximum Power Point Control
LTC4000-1	ADI	获取价格	具最大功率点控制功能以为电池充电的高电压、大电流控制器
LTC4000EGN#PBF	Linear	获取价格	LTC4000 - High Voltage High Current Controller for Battery Charging and Power Management;
LTC4000EUFD#PBF	Linear	获取价格	LTC4000 - High Voltage High Current Controller for Battery Charging and Power Management;
LTC4000IGN#PBF	Linear	获取价格	LTC4000 - High Voltage High Current Controller for Battery Charging and Power Management;

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