Datasheet > 电源电路 > 开关式稳压器或控制器> LTC3725IMSETR

LTC3725IMSETR

更新时间： 2024-11-11 04:43:39

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	267K
描述
Single-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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LTC3725IMSETR 数据手册

LTC3725

Single-Switch Forward

Controller and Gate Driver

FEATURES

DESCRIPTIO

The LTC^®3725 is a controller for a single-switch forward

converter and includes an on-chip gate driver.

■

High Speed Gate Driver for Forward Converter

■

On-Chip Rectifier and Self-Starting Architecture

Eliminates Need for Separate Gate Drive Bias

Supply

For secondary-side control, combine the LTC3725 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: 9V and Up

■

Linear Regulator Controller for Fast Start-Up

■

Precision UVLO with Adjustable Hysteresis

■

Overcurrent Protection

■

Volt-Second Limit Prevents Transformer Core

Saturation

■

Voltage Feedforward for Fast Transient Response

■

Alternatively, the LTC3725 can be used as a standalone

voltagemodecontrollerinaprimary-sidecontrolarchitec-

ture with optoisolator feedback. Voltage feedforward pro-

vides excellent line regulation and transient response.

, LTC and LT 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

Available in 10-Lead MSOP 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/30A Isolated Single-Switch Forward Converter

36V TO 72V

•

0.85µH

•

3.3V

30A

OUT

1µF

100V

×2

B0540W

100µF

6.3V

×2

220µF

HAT2165

×2

HAT2165

×2

1.2Ω

1/4W

Si7450DP

6.3V

2.2nF

200V

0.030Ω

0.0012Ω

–

10µF

–

OUT

2.2µF

FCX491A

100k

FDC2512

2.74k

0.1µF

1µF

–

NDRV GATE

FG SW

SG V NDRV

MODE

–

FB/IN

365k

•

5.1k

UVLO

LTC3725

LTC3706

1µF

SSFLT

FS/IN

15k

GND PGND RUN/SS SLP REGSD FS/SYNC PHASE

SLMT PGND GND

162k

604Ω

33nF

3.3k

47nF

33nF

100k

470pF

L1: PULSE PA1294.910

T1: PULSE PA0815

T2: PULSE PA0297

3725 TA01

3725f

12 3 4 5 6 7...20

中文翻译

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与LTC3725IMSETR相关器件

型号	品牌	获取价格	描述	数据表
LTC3725IMSETRPBF	Linear	获取价格	Single-Switch Forward Controller and Gate Driver
LTC3726	Linear	获取价格	Secondary-Side Synchronous Forward Controller
LTC3726EGN	Linear	获取价格	Secondary-Side Synchronous Forward Controller
LTC3726EGN#PBF	Linear	获取价格	LTC3726 - Secondary-Side Synchronous Forward Controller; Package: SSOP; Pins: 16; Temperat
LTC3726EGN#TR	Linear	获取价格	LTC3726 - Secondary-Side Synchronous Forward Controller; Package: SSOP; Pins: 16; Temperat
LTC3726EGN#TRPBF	Linear	获取价格	LTC3726 - Secondary-Side Synchronous Forward Controller; Package: SSOP; Pins: 16; Temperat
LTC3726IGN	Linear	获取价格	Secondary-Side Synchronous Forward Controller
LTC3726IGN#TR	Linear	获取价格	LTC3726 - Secondary-Side Synchronous Forward Controller; Package: SSOP; Pins: 16; Temperat
LTC3726IGN#TRPBF	Linear	获取价格	LTC3726 - Secondary-Side Synchronous Forward Controller; Package: SSOP; Pins: 16; Temperat
LTC3727	Linear	获取价格	High Efficiency, 2-Phase Synchronous Step-Down Switching Regulators

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