Datasheet > LTC1696

LTC1696

更新时间： 2024-02-08 06:41:55

品牌	Logo	应用领域
凌特 - Linear		控制器
页数	文件大小	规格书
28页	320K
描述
Synchronous Dual Mode Phase Modulated Full Bridge Controllers

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数据手册

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LTC1696 数据手册

Final Electrical Specifications

LTC3722-1/LTC3722-2

Synchronous Dual Mode

Phase Modulated

Full Bridge Controllers

February 2003

DESCRIPTIO

FEATURES

TheLTC^®3722-1/LTC3722-2phaseshiftPWMcontrollers

provide all of the control and protection functions neces-

sary to implement a high efficiency, zero voltage switched

(ZVS), full bridge power converter. Adaptive ZVS circuitry

delays the turn-on signals for each MOSFET independent

of internal and external component tolerances. Manual

delay set mode enables secondary side control operation

or direct control of switch turn-on delays.

■

Adaptive or Manual Delay Control for Zero Voltage

Switching Operation

■

Adjustable Synchronous Rectification Timing for

Highest Efficiency

Adjustable Maximum ZVS Delay

■

Adjustable System Undervoltage Lockout and

Hysteresis

■

Programmable Leading Edge Blanking

■

Very Low Start-Up and Quiescent Currents

The LTC3722-1/LTC3722-2 feature adjustable synchro-

nous rectifier timing for optimal efficiency. A UVLO pro-

gram input provides accurate system turn-on and turn-off

voltages. The LTC3722-1 features peak current mode

controlwithprogrammableslopecompensationandlead-

ing edge blanking, while the LTC3722-2 employs voltage

mode control with voltage feedforward capability.

■

Current Mode (LTC3722-1) or Voltage Mode

(LTC3722-2) Operation

■

Programmable Slope Compensation

■

V_CCUVLO and 25mA Shunt Regulator

■

50mA Output Drivers

■

Soft-Start, Cycle-by-Cycle Current Limiting and

Hiccup Mode Short-Circuit Protection

■

The LTC3722-1/LTC3722-2 feature extremely low operat-

ingandstart-upcurrents. Bothdevicesincludeafullrange

of protection features and are available in the 24-pin

surface mount (GN) package.

^{5V, 15mA Low D}U^{ropout Regulator}

APPLICATIO S

■

Telecommunications, Infrastructure Power Systems

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

■

Distributed Power Architectures

Server Power Supplies

■

TYPICAL APPLICATIO

36V TO 72V

12V_OUT, 240W Converter Efficiency

36V

LTC3722

48V

OUT

12V

72V

OUT

1/2

RCS

10 12 14 16 18 20

CURRENT (A)

3722 • TA01A

U1, U2: LTC1693-1 DUAL GATE DRIVER

3722 TA01b

372212i

Information furnished by Linear Technology Corporation is believed to be accurate and reliable.

However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen-

tationthattheinterconnectionofitscircuitsasdescribedhereinwillnotinfringeonexistingpatentrights.

12 3 4 5 6 7...28

中文翻译

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