LT3752MPFE#PBF datasheet(1/52 Pages) AD

tên linh kiện	LT3752MPFE#PBF

Giải thích chi tiết về linh kiện	Active Clamp Synchronous Forward Controllers with Internal Housekeeping Controller

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LT3752/LT3752-1

1

Rev. C

For more information www.analog.com

TYPICAL APPLICATION

FEATURES

DESCRIPTION

Active Clamp Synchronous

Forward Controllers with Internal

Housekeeping Controller

TheLT®3752/LT3752-1arecurrentmodePWMcontrollers

optimized for an active clamp forward converter topology.

ADC/DChousekeepingcontrollerisincludedforimproved

efficiency and performance. The LT3752 allows operation

up to 100V input and the LT3752-1 is optimized for ap-

plications with input voltages greater than 100V.

Aprogrammablevolt-secondclampallowsprimaryswitch

duty cycles above 50% for high switch, transformer and

rectifier utilization. Active clamp control reduces switch

voltage stress and increases efficiency. A synchronous

output is available for controlling secondary side syn-

chronous rectification.

The LT3752/LT3752-1 are available in a 38-lead plastic

TSSOP package with missing pins for high voltage

spacings.

18V to 72V, 12V/12.5A, 150W Active Clamp Isolated Forward Converter

APPLICATIONS

n

Input Voltage Range: LT3752: 6.5V to 100V,

LT3752-1:Limited Only by External Components

n

Internal Housekeeping DC/DC Controller

n

Programmable Volt-Second Clamp

n

High Efficiency Control: Active Clamp,

Synchronous Rectification, Programmable Delays

n

Short-Circuit (Hiccup Mode) Overcurrent Protection

n

Programmable Soft-Start/Stop

n

Programmable OVLO and UVLO with Hysteresis

n

Programmable Frequency (100kHz to 500kHz)

n

Synchronizable to an External Clock

n

AEC-Q100 Qualified for Automotive Applications

n

Offline and HV Car Battery Isolated Power Supplies

n

48V Telecommunication Isolated Power Supplies

n

Industrial, Automotive and Military Systems

All registered trademarks and trademarks are the property of their respective owners. Protected

by U.S. patents, including XXXXX, XXXXX.

49.9k

22.6k

1.82k

7.32k

34k

71.5k

31.6k

100k

2.8k

10k

560

3.16k

100k

VAUX

SYNC

VIN

GND

FB

LT8311

PGOOD

2k

0.006

10k

0.15

499

2.2µF

INTVCC

VAUX

ZVN4525E6

100

1.1k

1.2k

2.2nF

EFFICIENCY: 94% AT 48VIN/10AOUT

0.33µF

22nF

4.7µF

2.2µF

22µF

16V

×2

VOUT

12V

12.5A

470µF

16V

4.7µF

220nF

3752 TA01

68pF

4.7nF

220pF

1µF

INTVCC

SOUT

ISENSEN

ISENSEP

OUT

VIN

AOUT

HISENSE

HOUT

OC

5.9k

100k

UVLO_VSEC

LT3752

SYNC

100nF

15nF

Si2325DS

4:4

BSC077N12NS3

FDMS86101

BSC077N12NS3

499k

13.7k

6.8µH

100k

11.3k

100

+

•

4.7µF

100V

×3

VIN

18V TO 72V

GND

OVLO

HFB

68pF

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Số phần tương tự - LT3752MPFE#PBF

nhà sản xuất	tên linh kiện	bảng dữ liệu	Giải thích chi tiết về linh kiện
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