Datasheet.kr   

TK83854 데이터시트 PDF




TOKO에서 제조한 전자 부품 TK83854은 전자 산업 및 응용 분야에서
광범위하게 사용되는 반도체 소자입니다.


PDF 형식의 TK83854 자료 제공

부품번호 TK83854 기능
기능 HIGH POWER FACTOR PREREGULATOR
제조업체 TOKO
로고 TOKO 로고


TK83854 데이터시트 를 다운로드하여 반도체의 전기적 특성과 매개변수에 대해 알아보세요.




전체 12 페이지수

미리보기를 사용할 수 없습니다

TK83854 데이터시트, 핀배열, 회로
TK83854
HIGH POWER FACTOR PREREGULATOR
FEATURES
s Control Boost PWM to 0.99 Power Factor
s Limit Line Current Distortion to < 5%
s Worldwide Operation without Switches
s Feed-Forward Line Regulation
s Low Noise Sensitivity
s Pin Compatible with UC2854, and UC3854
(Licensed Source)
DESCRIPTION
FEATURES (CONT.)
s Low Start-Up Supply Current
s Fixed-Frequency PWM Drive
s Low-Offset Analog Multiplier/Divider
s 1 Amp Totem-Pole Gate Driver
s Precision Voltage Reference
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.
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
SOP-16
83854
DIP-16
TK83854
GND
PKLMT
CAOUT
ISENSE
MULTOUT
IAC
VAOUT
VRMS
GTDRV
VCC
CT
SS
RSET
VSENSE
ENA
Vref
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
TK83854
Package Code
Tape/Reel Code
Extended Temp. Range
BLOCK DIAGRAM
VCC
16/10 V
ENA
2.5/2.25 V
7.5 V
VSENSE
IAC
VRMS
SS
14 µA
VAOUT MULTOUT CAOUT PKLMT
Vref
VCC
IM =
AB
C
A
7-5 V
REF
RUN
IC POWER
15 V
GTDRV
B
X2 C
RUN
OSC
R
RQ
S
PACKAGE CODE
D: DIP-16
M: SOP-16
TEMP. RANGE (OPTIONAL)
I: -40 TO +85 C
TAPE/REEL CODE
TL: Tape Left
MG: Magazine
January 1999 TOKO, Inc.
ISENSE
CT RSET
1
GND
Page 1




TK83854 pdf, 반도체, 판매, 대치품
TK83854
TK83854 ELECTRICAL CHARACTERISTICS (CONT.)
Test conditions: VCC = 18 V, RSET = 15 k to GND, CT = 1.5 nF, PKLMT = 1 V, ENA = 7.5 V, VRMS = 1.5 V, IAC = 100 µA,
VISENSE = 0 V, VOUT(CA) = 3.5 V, VOUT(VA) = 5 V, VSENSE = 7.5 V, No load on SS, CAOUT, VAOUT, Vref, GTDRV, TA = Operating
Temperature Range, unless otherwise specified.
SYMBOL
PARAMETER
TEST CONDITIONS
MULTIPLIER
IOM(IAC)
Multiplier Output Current (IAC
LIMITED)
IAC = 100 µA, RSET = 10 k
IOM(ZC)
IOM(SET)
Multiplier Output Current Zero
Multiplier Output Current (RSET
LIMITED)
IAC = 0 µA, RSET = 15 k
IAC = 450 µA, RSET = 15 k,
VRMS = 1 V, VA = 6 V
IAC = 50 µA, VRMS = 2 V,
VA = 4 V
IAC = 100 µA, V = 2 V,
RMS
VA = 2 V
IOM Multiplier Output Current
IAC = 200 µA, VRMS = 2 V,
VA = 4 V
IAC = 300 µA, VRMS = 1 V,
VA = 2 V
IAC = 100 µA, V = 1 V,
RMS
VA = 2 V
K Multiplier Gain Current
(Note 4)
OSCILLATOR
fOSC Oscillator Frequency
RSET = 15 k
RSET = 8.2 k
VRP CT Ramp Peak-to-Peak Amplitude
VRV CT Ramp Valley Voltage
Note 4: Multiplier gain constant (K) is defined by IOM = [K x IIAC x (VOUT(VA) - 1)] / VRMS2.
MIN TYP MAX UNITS
-220 -200 -180
-2.0 -0.2 2.0
-280 -255 -220
µA
µA
µA
-50 -42 -33 µA
-38 -27 -12 µA
-165 -150 -105 µA
-250 -225 -150 µA
-95 -80 -60
-1.0
µA
V
46 55 62 kHz
86 102 118 kHz
4.9 5.4 5.9
V
0.8 1.1 1.3
V
Page 4
January 1999 TOKO, Inc.

4페이지










TK83854 전자부품, 판매, 대치품
TK83854
PIN DESCRIPTION
GROUND PIN (GND)
All voltages are measured with respect to GND. VCC and
Vref should be bypassed directly to GND with a 0.1 µF or
larger ceramic capacitor. The timing capacitor discharge
current also returns to this pin, so the lead from the
oscillator timing capacitor to GND should also be as short
and as direct as possible.
PEAK LIMIT (PKLMT)
The threshold for PKLMT is GND. Connect this input to the
negative voltage on the current sense resistor as shown in
Figure 1. Use a resistor to Vref to offset the negative current
sense signal up to GND.
CURRENT AMPLIFIER OUTPUT (CAOUT)
This is the output of a wide-bandwidth op-amp that senses
line current and commands the Pulse Width Modulator
(PWM) to force the correct current. This output can swing
close to GND, allowing the PWM to force zero duty cycle
when necessary. The current amplifier will remain active
even if the IC is disabled.
CURRENT SENSE MINUS (ISENSE)
This is the inverting input to the current amplifier. This input
and the non-inverting input MULTOUT remain functional
down to and below GND. Care should be taken to avoid
taking these inputs below –0.5 V, because they are
protected with diodes to GND.
MULTIPLIER OUTPUT AND CURRENT SENSE PLUS
(MULTOUT)
The output of the analog multiplier and the non-inverting
input of the current amplifier are connected together at
MULTOUT. The cautions about taking ISENSE below –0.5 V
also apply to MULTOUT. As the multiplier output is a
current, this is a high impedance input similar to ISENSE, so
the current amplifier can be configured as a differential
amplifier to reject GND noise. Figure 1 shows an example
of using the current amplifier differentially.
INPUT AC CURRENT (IAC)
be used for sensing instantaneous line voltage. The nominal
voltage on IAC is 6 V, so in addition to a resistor from IAC
to rectified line, connect a resistor from IAC to Vref. If the
resistor to Vref is one-fourth of the value of the resistor to
the rectifier, then the 6 V offset will be cancelled, and the
line current will have minimal crossover distortion.
VOLTAGE AMPLIFIER OUTPUT (VAOUT)
This is the output of the op-amp that regulates output
voltage. Like the current amplifier, the voltage amplifier will
also stay active even if the IC is disabled with either ENA
or VCC. This means that large feedback capacitors across
the amplifier will stay charged through momentary disable
cycles. Voltage amplifier output levels below ~1 V will
inhibit multiplier output.
RMS LINE VOLTAGE (V(rms))
The output of a boost PWM is proportional to the input
voltage, so when the line voltage into a low-bandwidth
boost PWM voltage regulator changes, the output will
change immediately and slowly recover to the regulated
level. For these devices, the V(rms) input compensates for
line voltage changes if it is connected to a voltage
proportional to the RMS input line voltage. For best control,
the VRMS voltage should stay between 1.5 V and 3.5 V.
VOLTAGE REFERENCE OUTPUT (Vref)
Vref is the output of an accurate 7.5 V voltage reference.
This output is capable of delivering 10 mA to peripheral
circuitry and is internally short circuit current limited. Vref is
disabled and will remain at 0 V when VCC is low or when
ENA is low. Bypass Vref to GND with a 0.1 µF or larger
ceramic capacitor for best stability.
ENABLE (ENA)
ENA is a logic input that will enable the PWM output,
voltage reference, and oscillator. ENA also will release the
soft start clamp, allowing SS to rise. When unused, connect
ENA to a +5 V supply or pull ENA high with a 22 k resistor.
The ENA pin is not intended to be used as a high-speed
shutdown to the GTDRV output.
This input to the analog multiplier is a current. The multiplier
is tailored for very low distortion from this current input (IAC
to MULTOUT), so this is the only multiplier input that should
January 1999 TOKO, Inc.
Page 7

7페이지


구       성 총 12 페이지수
다운로드[ TK83854.PDF 데이터시트 ]

당사 플랫폼은 키워드, 제품 이름 또는 부품 번호를 사용하여 검색할 수 있는

포괄적인 데이터시트를 제공합니다.


구매 문의
일반 IC 문의 : 샘플 및 소량 구매
-----------------------------------------------------------------------

IGBT, TR 모듈, SCR 및 다이오드 모듈을 포함한
광범위한 전력 반도체를 판매합니다.

전력 반도체 전문업체

상호 : 아이지 인터내셔날

사이트 방문 :     [ 홈페이지 ]     [ 블로그 1 ]     [ 블로그 2 ]



관련 데이터시트

부품번호상세설명 및 기능제조사
TK83854

HIGH POWER FACTOR PREREGULATOR

TOKO
TOKO
TK83854DIMG

HIGH POWER FACTOR PREREGULATOR

TOKO
TOKO

DataSheet.kr       |      2020   |     연락처      |     링크모음      |      검색     |      사이트맵