參數(shù)資料
型號(hào)： FA5501AP
廠商： FUJI ELECTRIC CO LTD
元件分類： 穩(wěn)壓器
英文描述： 1 A SWITCHING CONTROLLER, PDIP8
封裝： DIP-8
文件頁(yè)數(shù)： 6/26頁(yè)
文件大?。?/td> 228K
代理商： FA5501AP
FA5500AP/AN, FA5501AP/AN
14
Quality is our message
(2)Power factor correction operation
As described in “(1) Switching operation”, inductor
current is repeated triangular waveform. The average
current (IL1(mean)) of this repeated triangular waveform
is one half of the peak current (IL1(peak)).
Then, the inductor peak current is controlled to be
sinusoidal and the high frequency content of inductor
current is filtered. As a result, it is possible to force the
AC input current into sinusoidal waveform.
enlarged
IL1
IL1(peak)
IL1(mean)
=1/2×IL1(peak)
IL1
Iin
2×Iin(peak)
Iin(peak)
filtered the high
frequency content
by C1
Fig.3
Outline of inductor and AC input current
In an actual circuit, the internal multiplier (MUL)
controls the inductor peak current as sinusoidal
waveform.
The voltage of COMP pin, which is the output of error
amplifier (ERRAMP), is almost DC voltage in steady
state by C3. This voltage is input to the multiplier. The
other input of multiplier monitors the rectified waveform
of AC line voltage. As a result, the multiplier outputs the
sinusoidal waveform that is proportional to AC line
voltage as the product of two input voltages.
This
sinusoidal
voltage
is
input
to
the
current
comparator (CUR. comp.) as the threshold of inductor
current.
As a result, the inductor current becomes repeated
triangular waveform of which peak current envelope is
sinusoidal. The switching ripple of inductor current is
then filtered by C1 and AC input current becomes
sinusoidal waveform.
AC
L1
C1
Q1
Rs
4
3
2
1
FB
ERRAMP
COMP
CUR.comp
MUL
IS
MUL
t
V
t
V
t
V
t
V
t
I
C3
sinusoidal
Fig.4
Outline of waveform of each part
相關(guān)PDF資料
PDF描述
FA5500AN 1 A SWITCHING CONTROLLER, PDSO8
FA5500AP 1 A SWITCHING CONTROLLER, PDIP8
FA5516N 1 A SWITCHING CONTROLLER, 143 kHz SWITCHING FREQ-MAX, PDSO8
FA5517N 1 A SWITCHING CONTROLLER, 110 kHz SWITCHING FREQ-MAX, PDSO8
FA5516P 1 A SWITCHING CONTROLLER, 143 kHz SWITCHING FREQ-MAX, PDIP8
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
FA5501AP/AN 制造商:未知廠家 制造商全稱:未知廠家 功能描述:
FA5502 制造商:未知廠家 制造商全稱:未知廠家 功能描述:FA5502P/M is a control IC for a power factor correction system.
FA5502M-H1 制造商:Fuji Electric 功能描述:
FA5502M-TE1 制造商:Fuji Electric 功能描述:1.5 A POWER FACTOR CONTROLLER, 150 kHz SWITCHING FREQ-MAX, 16 Pin Plastic SOP 制造商:Fuji Semiconductors, Inc. 功能描述:1.5 A POWER FACTOR CONTROLLER, 150 kHz SWITCHING FREQ-MAX, 16 Pin Plastic SOP
FA5502P/M 制造商:未知廠家 制造商全稱:未知廠家 功能描述:FA5502P/M is a control IC for a power factor correction system.
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