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UC2854AJ PDF预览

UC2854AJ

更新时间: 2024-11-25 22:35:47
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
页数 文件大小 规格书
16页 452K
描述
ADVANCED HIGH-POWER FACTOR PREREGULATOR

UC2854AJ 技术参数

生命周期:Obsolete零件包装代码:DIP
包装说明:DIP, DIP16,.3针数:16
Reach Compliance Code:unknownECCN代码:EAR99
HTS代码:8542.39.00.01风险等级:5.15
模拟集成电路 - 其他类型:POWER FACTOR CONTROLLER控制模式:CURRENT-MODE
控制技术:PULSE WIDTH MODULATION最大输入电压:20 V
最小输入电压:10 V标称输入电压:18 V
JESD-30 代码:R-GDIP-T16长度:19.56 mm
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:1.5 A封装主体材料:CERAMIC, GLASS-SEALED
封装代码:DIP封装等效代码:DIP16,.3
封装形状:RECTANGULAR封装形式:IN-LINE
认证状态:Not Qualified座面最大高度:5.08 mm
子类别:Switching Regulator or Controllers表面贴装:NO
切换器配置:BOOST最大切换频率:120 kHz
温度等级:INDUSTRIAL端子形式:THROUGH-HOLE
端子节距:2.54 mm端子位置:DUAL
宽度:7.62 mmBase Number Matches:1

UC2854AJ 数据手册

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ꢇ ꢃꢄ ꢅꢆ  
ꢊ ꢃꢄ ꢅꢆ  
ꢀꢁꢇ ꢃ ꢄ ꢅ ꢈꢉ  
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SLUS329B − JUNE 1998 − REVISED FEBRUARY 2005  
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FEATURES  
DESCRIPTION  
D
Controls Boost PWM to Near-Unity Power  
Factor  
The UC3854A/B products are pin compatible  
enhanced versions of the UC3854. Like the  
UC3854, these products provide all of the  
functions necessary for active power factor  
corrected preregulators. The controller achieves  
near unity power factor by shaping the AC input  
line current waveform to correspond to the AC  
input line voltage. To do this the UC3854A/B uses  
average current mode control. Average current  
mode control maintains stable, low distortion  
sinusoidal line current without the need for slope  
compensation, unlike peak current mode control.  
D
D
D
D
D
D
D
Limits Line Current Distortion To < 3%  
World-Wide Operation Without Switches  
Accurate Power Limiting  
Fixed-Frequency Average Current-Mode  
Control  
High Bandwidth (5 MHz), Low-Offset Current  
Amplifier  
Integrated Current- and Voltage Amplifier  
Output Clamps  
Multiplier Improvements: Linearity, 500 mV  
A 1% 7.5 V reference, fixed frequency oscillator,  
PWM, voltage amplifier with soft-start, line voltage  
V
Offset (Eliminates External Resistor), 0 V  
AC  
to 5 V Multout Common-Mode Range  
V GOOD Comparator  
REF  
Faster and Improved Accuracy ENABLE  
Comparator  
feedforward (V  
clamp, and over current comparator round out the  
list of features.  
squarer), input supply voltage  
RMS  
D
D
Available in the 16-pin N (PDIP), DW (SOIC-  
Wide), and J (CDIP) and 20-pin Q (PLCC)  
package. See ordering information on page 3 for  
availability by temperature range.  
D
UVLO Options (16 V/10 V or 10.5 V/10 V)  
D
300-µA Start-Up Supply Current  
BLOCK DIAGRAM  
VAO  
7
MOUT  
5
CAO PKLMT  
REF  
9
3
2
V
CC  
7.5 V REF  
(A) 16 V / 10 V  
(B) 10.5 V / 10 V  
RUN  
10  
ENA  
7.1 V  
IC  
POWER  
2.65 V / 2.15 V  
3 V  
15 VCC  
A
11  
6
VSENSE  
IAC  
R
R
S
B
C
16 GTDRV  
Q
2
X
8
VRMS  
SS  
RUN  
14 µA  
20 V  
13  
A   B  
IMOUT  
+
OSC  
1 GND  
C
4
14  
CT  
12  
UDG−03110  
ISENSE  
RSET  
ꢘꢥ  
Copyright 2003, Texas Instruments Incorporated  
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1
www.ti.com  

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