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UC2854BMDWREP Fiches technique(PDF) 1 Page - Texas Instruments

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No de pièce UC2854BMDWREP
Description  Advanced High-Power Factor Preregulator
Download  38 Pages
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Fabricant  TI1 [Texas Instruments]
Site Internet  http://www.ti.com
Logo TI1 - Texas Instruments

UC2854BMDWREP Fiches technique(HTML) 1 Page - Texas Instruments

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UDG−03110
10
11
6
8
15
1
16
ENA
VSENSE
IAC
VRMS
VCC
GND
GTDRV
2.65 V / 2.15 V
3 V
7
VAO
13
SS
X2
A
B
C
(A) 16 V / 10 V
(B) 10.5 V / 10 V
5
MOUT
4
ISENSE
3
CAO
14
CT
OSC
12
RSET
S
Q
R
R
2
PKLMT
20 V
IC
POWER
7.5 V REF
9
REF
RUN
7.1 V
RUN
VCC
14 µA
I
MOUT
A
B
C
Product
Folder
Sample &
Buy
Technical
Documents
Tools &
Software
Support &
Community
UC2854B-EP
SGLS318A – NOVEMBER 2005 – REVISED NOVEMBER 2015
UC2854B-EP Advanced High-Power Factor Preregulator
1 Features
Comparator
UVLO Options (16 V/10 V or 10.5 V/10 V)
1
Controlled Baseline
300-
μA Start-Up Supply Current
One Assembly/Test Site, One Fabrication Site
Extended Temperature Performance of
−55°C to
2 Applications
125°C
Industrial Lighting
Enhanced Diminishing Manufacturing Sources
(DMS) Support
3 Description
Enhanced Product-Change Notification
The UC2854B products are pin compatible enhanced
Qualification Pedigree
versions of the UC2854. Like the UC2854, these
products provide all of the functions necessary for
(1)
Component qualification in accordance with JEDEC and
industry standards to ensure reliable operation over an
active power factor corrected preregulators. The
extended temperature range. This includes, but is not limited
controller achieves near unity power factor by
to, Highly Accelerated Stress Test (HAST) or biased 85/85,
shaping
the
ac-input
line
current
waveform
to
temperature cycle, autoclave or unbiased HAST,
correspond to the ac-input line voltage. To do this the
electromigration, bond intermetallic life, and mold compound
life. Such qualification testing should not be viewed as
UC2854B
uses
average
current
mode
control.
justifying use of this component beyond specified
Average current mode control maintains stable, low
performance and environmental limits.
distortion sinusoidal line current without the need for
Controls Boost PWM to Near-Unity Power Factor
slope
compensation,
unlike
peak
current
mode
control.
Limits Line Current Distortion to <3%
World-Wide Operation Without Switches
A 1% 7.5-V reference, fixed frequency oscillator,
PWM, voltage amplifier with soft-start, line voltage
Accurate Power Limiting
feedforward (VRMS squarer), input supply voltage
Fixed-Frequency Average Current-Mode Control
clamp, and over current comparator round out the list
High Bandwidth (5 MHz), Low-Offset Current
of features.
Amplifier
The UC2854B is available in a DW (SOIC-wide)
Integrated Current- and Voltage Amplifier Output
package.
Clamps
Device Information(1)
Multiplier Improvements: Linearity, 500 mV VAC
Offset (Eliminates External Resistor), 0 V to 5 V
PART NUMBER
PACKAGE
BODY SIZE (NOM)
Multout Common-Mode Range
UC2854B-EP
SOIC (16)
10.30 mm × 7.50 mm
VREF GOOD Comparator
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Faster and Improved Accuracy ENABLE
Block Diagram
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.


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