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UCC3818DWTR PDF预览

UCC3818DWTR

更新时间： 2024-11-23 12:01:19
品牌 Logo 应用领域
德州仪器 - TI 稳压器光电二极管信息通信管理
页数 文件大小 规格书
32页 948K
描述
BiCMOS POWER FACTOR PREREGULATOR

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中文翻译

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UCC3818DWTR 数据手册

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SLUS395J - FEBRUARY 2000 - REVISED MARCH 2009  
D
Controls Boost Preregulator to Near-Unity  
Power Factor  
D, DW, N, and PW PACKAGES  
(TOP VIEW)  
D
D
D
D
D
D
D
D
D
D
D
D
Limits Line Distortion  
GND  
PKLMT  
CAOUT  
CAI  
DRVOUT  
VCC  
CT  
World Wide Line Operation  
Over-Voltage Protection  
1
2
3
4
5
6
7
8
16  
15  
14  
13  
12  
Accurate Power Limiting  
SS  
Average Current Mode Control  
Improved Noise Immunity  
Improved Feed-Forward Line Regulation  
Leading Edge Modulation  
MOUT  
IAC  
RT  
11 VSENSE  
10 OVP/EN  
VAOUT  
VFF  
9
VREF  
150-µA Typical Start-Up Current  
Low-Power BiCMOS Operation  
12-V to 17-V Operation  
Frequency Range 6 kHz to 220 kHz  
description  
The UCCx817/18 family provides all 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 that of the ac input line voltage. Average current mode control maintains stable, low distortion sinusoidal line  
current.  
Designed in Texas Instrument’s BiCMOS process, the UCC2817/UCC2818 offers new features such as lower  
start-up current, lower power dissipation, overvoltage protection, a shunt UVLO detect circuitry, a leading-edge  
modulation technique to reduce ripple current in the bulk capacitor and an improved, low-offset ( 2 mV) current  
amplifier to reduce distortion at light load conditions.  
block diagram  
VCC  
15  
OVP/EN 10  
SS 13  
16 V (FOR UCC2817 ONLY)  
7.5 V  
REFERENCE  
9
VREF  
UVLO  
1.9 V  
ENABLE  
−
+
VAOUT  
7
16 V/10 V (UCC2817)  
10.5 V/10 V (UCC2818)  
ZERO POWER  
0.33 V  
VCC  
−
+
VOLTAGE  
ERROR AMP  
VSENSE 11  
7.5 V  
−
+
CURRENT  
AMP  
8.0 V  
PWM  
OVP  
Q
+
−
X
÷
MULT  
−
+
16 DRVOUT  
−
+
X
S
2
VFF  
8
X
PWM  
LATCH  
OSC  
CLK  
R
R
MIRROR  
2:1  
1
2
GND  
CLK  
OSCILLATOR  
IAC  
6
5
PKLMT  
−
+
MOUT  
4
3
12  
14  
UDG-98182  
CAI  
CAOUT RT  
CT  
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.  
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Copyright 2006 − 2009, Texas Instruments Incorporated  
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中文翻译

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UCC3818DWTR 替代型号

型号 品牌 替代类型 描述 数据表
UCC3818DWG4 TI

完全替代

 BiCMOS POWER FACTOR PREREGULATOR
UCC3818D TI

类似代替

 BiCMOS POWER FACTOR PREREGULATOR
UCC3818DW TI

类似代替

 BiCMOS POWER FACTOR PREREGULATOR

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UCC3818PW TI

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 		BiCMOS POWER FACTOR PREREGULATOR
UCC3818PW ROCHESTER

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