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UCC25702PW

更新时间： 2024-12-01 12:01:43

品牌	Logo	应用领域
德州仪器 - TI		脉冲
页数	文件大小	规格书
24页	1110K
描述
Advanced Voltage Mode Pulse Width Modulator

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中文翻译

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数据手册
替代型号

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UCC25702PW 数据手册

application

INFO

UCC15701/2

UCC25701/2

UCC35701/2

available

Advanced Voltage Mode Pulse Width Modulator

FEATURES

DESCRIPTION

700kHz Operation

The UCC35701/UCC35702 family of pulse width modulators is intended for

isolated switching power supplies using primary side control. They can be

used for both off-line applications and DC/DC converter designs such as in

a distributed power system architecture or as a telecom power source.

Integrated Oscillator/ Voltage Feed

Forward Compensation

Accurate Duty Cycle Limit

Accurate Volt-second Clamp

Optocoupler Interface

The devices feature low startup current, allowing for efficient off-line start-

ing, yet have sufficient output drive to switch power MOSFETs in excess of

500kHz.

Voltage feed forward compensation is operational over a 5:1 input range

and provides fast and accurate response to input voltage changes over a

4:1 range. An accurate volt-second clamp and maximum duty cycle limit

are also featured.

Fault Counting Shutdown

Fault Latch off or Automatic Shutdown

Soft Stop Optimized for Synchronous

Rectification

Fault protection is provided by pulse by pulse current limiting as well as the

ability to latch off after a programmable number of repetitive faults has oc-

curred.

1A Peak Gate Drive Output

130mA Start-up Current

750mA Operating Current

Two UVLO options are offered. UCC35701 family has turn-on and turn-off

thresholds of 13V/9V and UCC35702 family has thresholds of 9.6V/8.8V.

The UCC35701/2 and the UCC25701/2 are offered in the 14 pin SOIC (D),

14 pin PDIP (N) or in 14 pin TSSOP (PW) packages. The UCC15701/2 is

offered in the 14 pin CDIP (J) package.

TYPICAL APPLICATION DIAGRAM

SUPPLY

VFF

VDD

VREF

UCC35701

OUT

10 CT

VSCLAMP

OUT

ILIM

11 SYNC

14 SS

R10

RCS

COUNT

12 VREF

PGND

GND

V RETURN

RGND

R11

OUT

R13

R12

R14

R15

UDG-98005-1

SLUS293C - JANUARY 2000 - REVISED JUNE 2005

12 3 4 5 6 7...24

中文翻译

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UCC25702PW 替代型号

型号	品牌	替代类型	描述	数据表
UCC25702PWTRG4	TI	类似代替	Advanced Voltage Mode Pulse Width Modulator
UCC25702PWTR	TI	类似代替	Advanced Voltage Mode Pulse Width Modulator
UCC25702PWG4	TI	类似代替	Advanced Voltage Mode Pulse Width Modulator

与UCC25702PW相关器件

型号	品牌	获取价格	描述	数据表
UCC25702PWG4	TI	获取价格	Advanced Voltage Mode Pulse Width Modulator
UCC25702PWTR	TI	获取价格	Advanced Voltage Mode Pulse Width Modulator
UCC25702PWTRG4	TI	获取价格	Advanced Voltage Mode Pulse Width Modulator
UCC25705	TI	获取价格	HIGH - SPEED VOLTAGE MODE PULSE MODE WIDTH MODULATOR
UCC25705D	TI	获取价格	HIGH - SPEED VOLTAGE MODE PULSE MODE WIDTH MODULATOR
UCC25705DG4	TI	获取价格	High Speed Voltage Mode Pulse Width Modulator 8-SOIC -40 to 85
UCC25705DGK	TI	获取价格	HIGH - SPEED VOLTAGE MODE PULSE MODE WIDTH MODULATOR
UCC25705DGKR	ETC	获取价格	SMPS Controller
UCC25705DGKTR	TI	获取价格	HIGH - SPEED VOLTAGE MODE PULSE MODE WIDTH MODULATOR
UCC25705DR	TI	获取价格	0.02A SWITCHING CONTROLLER, 4000kHz SWITCHING FREQ-MAX, PDSO8, GREEN, PLASTIC, MS-012AA, S

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