Datasheet > UCC28701D

UCC28701D

更新时间： 2024-09-19 23:39:03

品牌	Logo	应用领域
其他 - ETC		模拟IC
页数	文件大小	规格书
10页	197K
描述
Analog IC

阅读下载

中文翻译

获取价格

数据手册

如果您发现信息不准确，欢迎纠错

UCC28701D 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

• 130µA Start-up Current

• 750µA 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

SLUS293A - JANUARY 2000

12 3 4 5 6 7...10

中文翻译

下载PDF

与UCC28701D相关器件

型号	品牌	获取价格	描述	数据表
UCC28701DBVR	TI	获取价格	Constant-Voltage, Constant-Current Controller With Primary-Side Regulation
UCC28701DBVT	TI	获取价格	Constant-Voltage, Constant-Current Controller With Primary-Side Regulation
UCC28702	TI	获取价格	Constant-Voltage, Constant-Current Controller With Primary-Side Regulation
UCC28702DBVR	TI	获取价格	Constant-Voltage, Constant-Current Controller With Primary-Side Regulation
UCC28702DBVT	TI	获取价格	Constant-Voltage, Constant-Current Controller With Primary-Side Regulation
UCC28703	TI	获取价格	Constant-Voltage, Constant-Current Controller With Primary-Side Regulation
UCC28703DBVR	TI	获取价格	Constant-Voltage, Constant-Current Controller With Primary-Side Regulation
UCC28703DBVT	TI	获取价格	Constant-Voltage, Constant-Current Controller With Primary-Side Regulation
UCC28704	TI	获取价格	具有初级侧调节 (PSR) 功能的高效离线 CV 和 CC 反激控制器
UCC28704DBVR-1	TI	获取价格	具有初级侧调节 (PSR) 功能的高效离线 CV 和 CC 反激控制器 \| DBV \| 6