參數(shù)資料
型號(hào)： 5962-9326102M2A
廠商： TEXAS INSTRUMENTS INC
元件分類： 穩(wěn)壓器
英文描述： 1.5 A POWER FACTOR CONTROLLER, 120 kHz SWITCHING FREQ-MAX, CQCC20
封裝： CERAMIC, LCC-20
文件頁(yè)數(shù)： 1/16頁(yè)
文件大?。?/td> 365K
代理商： 5962-9326102M2A
1
FEATURES
DESCRIPTION
BLOCK DIAGRAM
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
2
PKLMT
20 V
IC
POWER
7.5 V REF
9
REF
RUN
7.1 V
RUN
VCC
14
A
I
MOUT +
A
B
C
SLUS329E – MONTH 2003 – REVISED JANUARY 2008
www.ti.com
ADVANCED HIGH-POWER FACTOR PREREGULATOR
Controls Boost PWM to Near-Unity Power
Factor
The
UC3854A/B
products
are
pin
compatible
enhanced versions of the UC3854. Like the UC3854,
Limits Line Current Distortion To <3%
these products provide all of the functions necessary
World-Wide Operation Without Switches
for active power factor corrected preregulators. The
Accurate Power Limiting
controller achieves near unity power
factor
by
Fixed-Frequency Average Current-Mode
shaping the ac input line current waveform to
correspond to the ac input line voltage. To do this the
Control
UC3854A/B uses average current mode control.
High Bandwidth (5 MHz), Low-Offset Current
Average current mode control maintains stable, low
Amplifier
distortion sinusoidal line current without the need for
Integrated Current- and Voltage-Amplifier
slope
compensation,
unlike
peak
current
mode
Output Clamps
control.
Multiplier Improvements: Linearity, 500 mV V
AC
A 1%, 7.5-V reference, fixed frequency oscillator,
Offset (Eliminates External Resistor), 0 V to
PWM, voltage amplifierwith soft-start, line voltage
5 V Multout Common-Mode Range
feedforward (VRMS squarer), input supply voltage
clamp, and over current comparator round out the lilst
V
REF GOOD Comparator
of feataures.
Faster and Improved Accuracy ENABLE
Comparator
Available in the 16-pin N (PDIP), DW (SOIC Wide),
and J (CDIP) and 20-pin Q (PLCC) package. See
UVLO Options (16 V/10 V or 10.5 V/10 V)
Ordering
Information
table
for
availability
by
300-A Start-Up Supply Current
temperature range.
1
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.
PRODUCTION DATA information is current as of publication date.
Copyright 2003–2008, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
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