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参数资料
| 型号： | TK83854DTL |
| 厂商： | TOKO INC |
| 元件分类： | 稳压器 |
| 英文描述： | 1.5 A POWER FACTOR CONTROLLER, 118 kHz SWITCHING FREQ-MAX, PDIP16 |
| 封装： | PLASTIC, DIP-16 |
| 文件页数： | 1/12页 |
| 文件大小： | 105K |
| 代理商： | TK83854DTL |
April 2001 TOKO, Inc.
Page 1
TK83854D
GND
PKLMT
CAOUT
ISENSE
MULTOUT
IAC
VAOUT
VRMS
GTDRV
VCC
CT
SS
RSET
VSENSE
ENA
Vref
ENA
OSC
7-5 V
REF
IC POWER
15 V
RUN
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 A
X2
IM =
AB
C
FEATURES
s
s Control Boost PWM to 0.99 Power Factor
s
s Limit Line Current Distortion to < 5%
s
s Worldwide Operation without Switches
s
s Feed-Forward Line Regulation
s
s Low Noise Sensitivity
s
s Pin Compatible with UC3854
(Licensed Source)
FEATURES (CONT.)
s
s Low Start-Up Supply Current
s
s Fixed-Frequency PWM Drive
s
s Low-Offset Analog Multiplier/Divider
s
s 1 Amp Totem-Pole Gate Driver
s
s Precision Voltage Reference
BLOCK DIAGRAM
TK83854
DESCRIPTION
The TK83854 provides active power factor correction for
power systems that otherwise would draw non-sinusoidal
current from sinusoidal power lines. This part implements 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 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
circuitry that supplies power to this device, the TK83854
features low start-up supply current.
This device is available in the 16-pin plastic dual in-line
(DIP) package.
83854
DIP-16
HIGH POWER FACTOR PREREGULATOR
ORDERING INFORMATION
TAPE/REEL CODE
TL: Tape Left
MG: Magazine
Tape/Reel Code
TK83854
Package Code
PACKAGE CODE
D: DIP-16
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TK83854MIMG | 制造商:TOKO 制造商全称:TOKO, Inc 功能描述:HIGH POWER FACTOR PREREGULATOR |
| TK83854MIMG/83854 | 制造商:TOKO 制造商全称:TOKO, Inc 功能描述:HIGH POWER FACTOR PREREGULATOR |
| TK83854MITL | 制造商:TOKO 制造商全称:TOKO, Inc 功能描述:HIGH POWER FACTOR PREREGULATOR |
| TK83854MITL/83854 | 制造商:TOKO 制造商全称:TOKO, Inc 功能描述:HIGH POWER FACTOR PREREGULATOR |
| TK-850/HG2 | 制造商:TESSERA TECHNOLOGY 功能描述: |
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