Datasheet 搜索 > 电源管理 > TI（德州仪器） > UCC3818D 数据手册 > UCC3818D 其他数据使用手册 1/45 页
器件3D模型￥ 24.294
UCC3818D 其他数据使用手册 - TI（德州仪器）
制造商:
TI（德州仪器）
分类:
电源管理
封装:
SOIC-16
描述:
TEXAS INSTRUMENTS UCC3818D 芯片, 功率因子控制器
Pictures:
3D模型
符号图
焊盘图
引脚图
产品图
页面导航:
引脚图在P3P4P10Hot
典型应用电路图在P16P17
原理图在P1P9P13
封装尺寸在P30P31P33P34P37P41
焊盘布局在P38P42
标记信息在P30P31
封装信息在P29P30P31P32P33P34
技术参数、封装参数在P4
应用领域在P1P32
电气规格在P5P6P7P18
导航目录
UCC3818D数据手册
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Copyright © 2016, Texas Instruments Incorporated
VREF9
2
16
1
15
10
5
4
DRVOUT
GND
CAI
VCC
OVP/EN
VAOUT
1.9 V
PKLMT
7.5 V REFERENCE
UVLO
16 V/10 V (UCC2817)
10.5 V/10 V (UCC2818)
VCC
3
OSCILLATOR
12
RT
14
CT
S Q
R
PWM
LATCH
+
t
PWM
CAOUT
+
t
+
t
+
t
SS
VOLTAGE
ERROR AMP
8.0 V
13
7
11VSENSE
VFF 8
IAC
6
MOUT
MIRROR
2:1
X
2
+
t
7.5 V
ENABLE
OVP
y
X
X
MULT
OSC
CLK
CLK
CURRENT
AMP
16 V (FOR UCC2817 ONLY)
+
t
0.33 V
ZERO POWER
R
+
t
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An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.
UCC2817
,
UCC2818
,
UCC3817
,
UCC3818
SLUS395K –FEBRUARY 2000–REVISED OCTOBER 2015
UCC2817, UCC2818, UCC3817 and UCC3818 BiCMOS Power Factor Pregulator
1
1 Features
1
• Controls Boost Preregulator to Near-Unity Power
Factor
• Limits Line Distortion
• World Wide Line Operation
• Over-Voltage Protection
• Accurate Power Limiting
• Average Current Mode Control
• Improved Noise Immunity
• Improved Feed-Forward Line Regulation
• Leading Edge Modulation
• 150-μA Typical Start-Up Current
• Low-Power BiCMOS Operation
• Up to 18-V Operation
• Frequency Range 6 kHz to 220 kHz
2 Applications
• PC Power
• Consumer Electronics
• Lighting
• Industrial Power Supplies
• IEC6100-3-2 Compliant Supplies Less Than
300 W
3 Description
The UCCx817 and UCCx818 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 UCCx817 and UCCx818 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.
Device Information
(1)
PART NUMBER PACKAGE BODY SIZE (NOM)
UCC2817,
UCC2818,
UCC3817,
UCC3818
SOIC (16)
3.91 mm × 9.9 mm
7.5 mm × 10.3 mm
PDIP (16) 6.35 mm × 19.3 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Block Diagram
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