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參數(shù)資料
| 型號： | TK83854 |
| 廠商： | TOKO Inc. |
| 元件分類： | 基準電壓源/電流源 |
| 英文描述： | HIGH POWER FACTOR PREREGULATOR |
| 中文描述： | 高功率因數(shù)前置穩(wěn)壓器 |
| 文件頁數(shù)： | 1/12頁 |
| 文件大小： | 109K |
| 代理商： | TK83854 |
January 1999 TOKO, Inc.
Page 1
TK83854
GND
PKLMT
CAOUT
ISENSE
MULTOUT
IAC
VAOUT
VRMS
GTDRV
VCC
CT
SS
RSET
VSENSE
ENA
Vref
ENA
OSC
REF
IC POWER
15 V
RUN
R
R
S
Q
A
B
C
RUN
1
VSENSE
IAC
VRMS
SS
ISENSE
CT
RSET
GND
GTDRV
VCC
Vref
PKLMT
CAOUT
MULTOUT
VAOUT
VCC
16/10 V
7.5 V
2.5/2.25 V
14 μA
X2
IM =AB
C
FEATURES
I
Control Boost PWM to 0.99 Power Factor
I
Limit Line Current Distortion to < 5%
I
Worldwide Operation without Switches
I
Feed-Forward Line Regulation
I
Low Noise Sensitivity
I
Pin Compatible with UC2854, and UC3854
(Licensed Source)
FEATURES (CONT.)
I
Low Start-Up Supply Current
I
Fixed-Frequency PWM Drive
I
Low-Offset Analog Multiplier/Divider
I
1 Amp Totem-Pole Gate Driver
I
Precision Voltage Reference
BLOCK DIAGRAM
TK83854
DESCRIPTION
The TK83854 family of integrated circuits provide active
power factor correction for power systems that otherwise
would draw non-sinusoidal current from sinusoidal power
lines. These parts implement all the control functions
necessary to build a power supply preregulator capable of
optimally using available power-line current while
minimizing line-current distortion. To do this, the TK83854
contains a voltage amplifier, a precision analog multiplier/
divider, a current amplifier, and a fixed-frequency PWM. In
addition, the TK83854 contains a power MOSFET gate
driver, 7.5 V reference, line anticipator, load-enable
comparator, low supply detector, and overcurrent
comparator.
The TK83854 family uses average current-mode control to
accomplish fixed-frequency current control with stability
and low distortion. Unlike peak current-mode control,
average current control accurately maintains sinusoidal
line current without slope compensation.
The TK83854's high reference voltage and high oscillator
amplitude minimize noise sensitivity while fast PWM
elements permit chopping frequencies above 200 kHz.
The TK83854 can be used in systems with line voltages
that vary from 75 to 275 V and with line frequencies across
the 50 Hz to 400 Hz range. To reduce the burden on the
ORDERING INFORMATION
TAPE/REEL CODE
TL: Tape Left
MG: Magazine
Tape/Reel Code
TK83854
Extended Temp. Range
Package Code
PACKAGE CODE
D: DIP-16
M: SOP-16
TEMP. RANGE
(OPTIONAL)
I: -40 TO +85 C
circuitry that supplies power to this device, the TK83854
family features low start-up supply current.
These devices are available in 16-pin plastic dual in-line
(DIP) and 16-pin surface mount (SOP) packages.
83854
83854
DIP-16
SOP-16
HIGH POWER FACTOR PREREGULATOR
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| TK83854DIMG | HIGH POWER FACTOR PREREGULATOR |
| TK83854DITL | HIGH POWER FACTOR PREREGULATOR |
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| TK83854DIMG | 制造商:TOKO 制造商全稱:TOKO, Inc 功能描述:HIGH POWER FACTOR PREREGULATOR |
| TK83854DIMG/83854 | 制造商:TOKO 制造商全稱:TOKO, Inc 功能描述:HIGH POWER FACTOR PREREGULATOR |
| TK83854DITL | 制造商:TOKO 制造商全稱:TOKO, Inc 功能描述:HIGH POWER FACTOR PREREGULATOR |
| TK83854DITL/83854 | 制造商:TOKO 制造商全稱:TOKO, Inc 功能描述:HIGH POWER FACTOR PREREGULATOR |
| TK83854MIMG | 制造商:TOKO 制造商全稱:TOKO, Inc 功能描述:HIGH POWER FACTOR PREREGULATOR |
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