900,000+ datasheet pdf search and download

Datasheet4U offers most rated semiconductors data sheet pdf






etcTI

UCC2817 Datasheet Preview

UCC2817 Datasheet

BiCMOS Power Factor Pregulator

No Preview Available !

Product
Folder
Sample &
Buy
Technical
Documents
Tools &
Software
Support &
Community
UCC2817, UCC2818, UCC3817, UCC3818
SLUS395K – FEBRUARY 2000 – REVISED OCTOBER 2015
UCC2817, UCC2818, UCC3817 and UCC3818 BiCMOS Power Factor Pregulator
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)
PDIP (16)
3.91 mm × 9.9 mm
7.5 mm × 10.3 mm
6.35 mm × 19.3 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Block Diagram
VCC
15
OVP/EN 10
16 V (FOR UCC2817 ONLY)
7.5 V REFERENCE 9 VREF
SS 13
VAOUT 7
VSENSE 11
7.5 V
VOLTAGE
t ERROR AMP
+
VFF 8
IAC 6
MOUT 5
X2
MIRROR
2:1
X
y MULT
X
1.9 V t
ENABLE
UVLO
+
0.33 V
ZERO POWER
t
16 V/10 V (UCC2817)
10.5 V/10 V (UCC2818)
VCC
CURRENT
AMP
t
+
+
8.0 V
t PWM
+
OSC
CLK
+ OVP
t
SQ
PWM
LATCH
RR
16 DRVOUT
1 GND
OSCILLATOR
CLK
t 2 PKLMT
+
4 3 12 14
CAI CAOUT RT CT
Copyright © 2016, Texas Instruments Incorporated
1
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.




etcTI

UCC2817 Datasheet Preview

UCC2817 Datasheet

BiCMOS Power Factor Pregulator

No Preview Available !

UCC2817, UCC2818, UCC3817, UCC3818
SLUS395K – FEBRUARY 2000 – REVISED OCTOBER 2015
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Revision History..................................................... 2
5 Pin Configuration and Functions ......................... 3
6 Specifications......................................................... 4
6.1 Absolute Maximum Ratings ...................................... 4
6.2 ESD Ratings.............................................................. 5
6.3 Recommended Operating Conditions....................... 5
6.4 Thermal Information .................................................. 5
6.5 Electrical Characteristics........................................... 5
6.6 Typical Characteristics .............................................. 8
7 Detailed Description .............................................. 9
7.1 Overview ................................................................... 9
7.2 Functional Block Diagram ......................................... 9
7.3 Feature Description................................................. 10
7.4 Device Functional Modes........................................ 13
8 Application and Implementation ........................ 15
8.1 Application Information............................................ 15
8.2 Typical Application ................................................. 16
9 Power Supply Recommendations...................... 24
9.1 Power Switch Selection .......................................... 24
10 Layout................................................................... 25
10.1 Layout Guidelines ................................................. 25
10.2 Layout Example .................................................... 27
11 Device and Documentation Support ................. 28
11.1 Documentation Support ....................................... 28
11.2 Related Links ........................................................ 28
11.3 Receiving Notification of Documentation Updates 28
11.4 Community Resources.......................................... 28
11.5 Trademarks ........................................................... 28
11.6 Electrostatic Discharge Caution ............................ 28
11.7 Glossary ................................................................ 28
12 Mechanical, Packaging, and Orderable
Information ........................................................... 29
4 Revision History
Changes from Revision J (March 2009) to Revision K
Page
• Added ESD Ratings table, Feature Description section, Device Functional Modes, Application and Implementation
section, Power Supply Recommendations section, Layout section, Device and Documentation Support section, and
Mechanical, Packaging, and Orderable Information section. ................................................................................................ 1
2 Submit Documentation Feedback
Copyright © 2000–2015, Texas Instruments Incorporated
Product Folder Links: UCC2817 UCC2818 UCC3817 UCC3818


Part Number UCC2817
Description BiCMOS Power Factor Pregulator
Maker etcTI
PDF Download

UCC2817 Datasheet PDF






Similar Datasheet

1 UCC281-3 Low Dropout 1 Ampere Linear Regulator
Unitrode
2 UCC281-5 Low Dropout 1 Ampere Linear Regulator
Unitrode
3 UCC281-ADJ Low Dropout 1 Ampere Linear Regulator
Unitrode
4 UCC2810 BiCMOS controller
etcTI
5 UCC2813-0 PWM
etcTI
6 UCC2813-0-Q1 Low-Power Economy BiCMOS PWM
etcTI
7 UCC2813-1 PWM
etcTI
8 UCC2813-1-Q1 Low-Power Economy BiCMOS PWM
etcTI
9 UCC2813-2 PWM
etcTI





Part Number Start With

0    1    2    3    4    5    6    7    8    9    A    B    C    D    E    F    G    H    I    J    K    L    M    N    O    P    Q    R    S    T    U    V    W    X    Y    Z



Site map

Webmaste! click here

Contact us

Buy Components

Privacy Policy