LTC3705

更新时间： 2024-11-06 05:43:55

品牌	Logo	应用领域
凌特 - Linear		驱动器栅极开关栅极驱动控制器
页数	文件大小	规格书
20页	285K
描述
2-Switch Forward Controller and Gate Driver

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中文翻译

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数据手册

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LTC3705 数据手册

LTC3705

2-Switch Forward

Controller and Gate Driver

FEATURES

DESCRIPTIO

The LTC^®3705 is a controller for a 2-switch forward

converter and includes on-chip bottom and top gate

drivers that do not require external transformers.

■

High-Speed Top and Bottom Gate Drivers for

2-Switch Forward Converter

On-Chip Rectifier and Self-Starting Architecture

■

Eliminate Need for Separate Gate Drive Bias

Supply

For secondary-side control, combine the LTC3705 with

the LTC3706 PolyPhase^®secondary-side synchronous

forward controller to create a complete forward converter

using a minimum of discrete parts. A proprietary scheme

is used to multiplex gate drive signals across the isolation

barrier through a tiny pulse transformer. The on-chip

rectifierandthesamepulsetransformerprovidegatedrive

bias power.

■

Wide Input Voltage Supply Range: 18V to 80V

■

Tolerant of 100V Input Voltage Transients

■

Linear Regulator Controller for Fast Start-Up

■

Precision UVLO with Adjustable Hysteresis

■

Overcurrent Protection

■

Volt-Second Limit Prevents Transformer Core

Saturation

■

Alternatively, the LTC3705 can be used as a standalone

voltagemodecontrollerinaprimary-sidecontrolarchitec-

ture with optoisolator feedback. Voltage feedforward pro-

vides excellent line regulation and transient response.

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

PolyPhase is a registered trademark of Linear Technology Corporation. All other

trademarks are the property of their respective owners. Patent Pending

Voltage Feedforward for Fast Transient Response

Available in 16-Lead Narrow SSOP Package

APPLICATIO S

■

Isolated 48V Telecommunication Systems

■

Internet Servers and Routers

■

Distributed Power Step-Down Converters

■

Automotive and Heavy Equipment

TYPICAL APPLICATIO

36V –72V to 3.3V/20A Isolated 2-Switch Forward Converter

OUT

1.2µH

MURS120

1.2Ω

•

Si7852DP

330µF

6.3V

×3

1µF

100V

Si7336ADP

×2

Si7336ADP

MURS120

CMPSH1-4

2mΩ

30mΩ

10µF

–

OUT

CZT3019

100k

BAS21

2.2µF

102k

FQT7N10

L1: COILCRAFT SER2010-122

T1: PULSE PA0807

0.22µF

T2: PULSE PA0297

SW SG

NDRV

–

FS/SYNC

365k

1µF

NDRV

UVLO

BOOST TG TS BG IS

FB/IN

•

LTC3706

ITH

680pF

LTC3705

–

2.2µF

33nF

FS/IN

SS/FLT

GND PGND PHASE SLP MODE REGSD

RUN/SS

GND PGND VSLMT

20k

22.6k

15k

162k

33nF

3705 TA01

3705fb

12 3 4 5 6 7...20

中文翻译

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与LTC3705相关器件

型号	品牌	获取价格	描述	数据表
LTC3705_15	Linear	获取价格	2-Switch Forward Controller and Gate Driver
LTC3705EGN	Linear	获取价格	2-Switch Forward Controller and Gate Driver
LTC3705EGN#TR	Linear	获取价格	LTC3705 - 2-Switch Forward Controller and Gate Driver; Package: SSOP; Pins: 16; Temperatur
LTC3705EGN#TRPBF	Linear	获取价格	暂无描述
LTC3705IGN	Linear	获取价格	2-Switch Forward Controller and Gate Driver
LTC3705IGN#PBF	Linear	获取价格	LTC3705 - 2-Switch Forward Controller and Gate Driver; Package: SSOP; Pins: 16; Temperatur
LTC3705IGN#TR	Linear	获取价格	暂无描述
LTC3705IGN#TRPBF	Linear	获取价格	LTC3705 - 2-Switch Forward Controller and Gate Driver; Package: SSOP; Pins: 16; Temperatur
LTC3706	Linear	获取价格	Secondary-Side Synchronous Forward Controller with PolyPhase Capability
LTC3706EGN	Linear	获取价格	Secondary-Side Synchronous Forward Controller with PolyPhase Capability

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