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UCC2891D PDF预览

UCC2891D

更新时间: 2024-11-25 22:59:31
品牌 Logo 应用领域
德州仪器 - TI 稳压器开关式稳压器或控制器电源电路开关式控制器光电二极管信息通信管理
页数 文件大小 规格书
34页 573K
描述
CURRENT MODE ACTIVE CLAMP PWM CONTROLLER

UCC2891D 技术参数

是否无铅: 不含铅是否Rohs认证: 符合
生命周期:Active零件包装代码:SOIC
包装说明:SOP, SOP16,.25针数:16
Reach Compliance Code:compliantECCN代码:EAR99
HTS代码:8542.39.00.01Factory Lead Time:6 weeks
风险等级:0.71模拟集成电路 - 其他类型:SWITCHING CONTROLLER
控制模式:CURRENT-MODE控制技术:PULSE WIDTH MODULATION
最大输入电压:14.5 V最小输入电压:8.5 V
标称输入电压:12 VJESD-30 代码:R-PDSO-G16
JESD-609代码:e4长度:9.9 mm
湿度敏感等级:1功能数量:1
端子数量:16最高工作温度:85 °C
最低工作温度:-40 °C最大输出电流:2.5 A
封装主体材料:PLASTIC/EPOXY封装代码:SOP
封装等效代码:SOP16,.25封装形状:RECTANGULAR
封装形式:SMALL OUTLINE峰值回流温度(摄氏度):260
认证状态:Not Qualified座面最大高度:1.58 mm
子类别:Switching Regulator or Controllers最大供电电流 (Isup):3 mA
标称供电电压 (Vsup):12 V表面贴装:YES
切换器配置:SINGLE最大切换频率:600 kHz
技术:BICMOS温度等级:INDUSTRIAL
端子面层:Nickel/Palladium/Gold (Ni/Pd/Au)端子形式:GULL WING
端子节距:1.27 mm端子位置:DUAL
处于峰值回流温度下的最长时间:NOT SPECIFIED宽度:3.91 mm
Base Number Matches:1

UCC2891D 数据手册

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ꢀꢁꢁ ꢂ ꢃꢄ ꢇ ꢆ ꢀ ꢁꢁ ꢂꢃ ꢄꢈ  
SLUS542A − OCTOBER 2003 − REVISED JULY 2004  
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ꢗ ꢏ ꢁꢐ ꢌꢍ ꢊꢐ ꢕ ꢕꢋ ꢊ  
ꢍꢓ  
FEATURES  
DESCRIPTION  
D
D
Ideal for Active Clamp/Reset Forward,  
Flyback Converters  
The UCC2891/2/3/4 family of PWM controllers is  
designed to simplify implementation of the various  
active clamp/reset switching power topologies.  
Provides Complementary Auxiliary Driver  
with Programmable Deadtime (Turn-On  
Delay) between AUX and MAIN Switches  
The UCC289x is a peak current-mode, fixed-  
frequency, high-performance pulse width modulator.  
It includes the logic and the drive capability for the  
auxiliary switch with a simple method of  
programming the critical delays for proper active  
clamp operation.  
D
Peak Current-Mode Control with  
Cycle-by-Cycle Current Limiting  
D
D
D
D
D
D
D
110-V Input Startup Regulator on UCC2891/3  
TrueDrivet 2-A Sink, 2-A Source Outputs  
Accurate Line UV and Line OV Threshold  
Programmable Slope Compensation  
1.0-MHz Synchronizable Oscillator  
The UCC2891/3 includes a 110-V start-up  
regulator for initial start-up and to provide  
keep-alive power during stand-by.  
Precise Programmable Maximum Duty Cycle  
Programmable Soft Start  
Additional features include an internal  
programmable slope compensation circuit,  
precise D  
limit, and a single resistor  
MAX  
programmable synchronizable oscillator. An  
accurate line monitoring function also programs  
the converter’s ON and OFF transitions with  
regard to the bulk input voltage. Along with the  
UCC2897, this UCC289x family allows the power  
supply designer to eliminate many of the external  
components, reducing the size and complexity of  
the design.  
APPLICATIONS  
D
150-W to 700-W SMPS  
D
High-Efficiency, Low EMI/RFI Off-Line or  
DC/DC Converters  
D
D
Server, 48-V Telecom, Datacom  
High Power Adapter, LCD-TV and PDP-TV  
BIAS  
WINDING  
UCC2891  
VIN  
+VIN  
BULK  
1
RDEL  
16  
15  
C
LOAD  
2
3
4
RTON LINEUV  
C
CLAMP  
Q2  
RTOFF  
VREF  
VDD 14  
OUT 13  
Q1  
SR  
DRIVE  
5
6
7
8
12  
SYNC  
GND  
AUX  
PGND 11  
SS/SD 10  
R
CS  
CS  
SECONDARY  
SIDE E/A  
RSLOPE  
FB  
9
UDG−02162  
R
F
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of  
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
ꢍꢣ  
Copyright 2003, Texas Instruments Incorporated  
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1
www.ti.com  

UCC2891D 替代型号

型号 品牌 替代类型 描述 数据表
UCC2891DRG4 TI

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UCC2891DG4 TI

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