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參數(shù)資料
| 型號： | L6563A |
| 廠商： | 意法半導(dǎo)體 |
| 元件分類： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | ADVANCED TRANSITION-MODE PFC CONTROLLER |
| 中文描述： | 先進(jìn)的轉(zhuǎn)型模式PFC控制器 |
| 文件頁數(shù)： | 20/37頁 |
| 文件大?。?/td> | 613K |
| 代理商： | L6563A |
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Application information
L6563 - L6563A
20/37
The twice-mains-frequency (2·f
L
) ripple appearing across C
FF
is triangular with a peak-to-
peak amplitude that, with good approximation, is given by:
Equation 4
where f
L
is the line frequency. The amount of 3
rd
harmonic distortion introduced by this
ripple, related to the amplitude of its 2·f
L
component, will be:
Equation 5
Figure 35
shows a diagram that helps choose the time constant R
FF
·C
FF
based on the
amount of maximum desired 3
rd
harmonic distortion. Always connect R
FF
and C
FF
to the
pin, the IC will not work properly if the pin is either left floating or connected directly to
ground.
Figure 35. R
FF
·C
FF
as a function of 3
rd
harmonic distortion introduced in the input
current
The dynamics of the voltage feedforward input is limited downwards at 0.5V (see
Figure 34
),
that is the output of the multiplier will not increase any more if the voltage on the V
FF
pin is
below 0.5V. This helps to prevent excessive power flow when the line voltage is lower than
the minimum specified value
V
FF
2V
4f
L
R
FF
C
FF
+
1
---------------------------------------
=
D
3
%
2
f
L
R
FF
C
FF
---------------------------------
=
D %
0.1
1
10
0.01
0.1
1
10
f = 50 Hz
f = 60 Hz
R · C [s]
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| L6563ATR | 功能描述:功率因數(shù)校正 IC Advanced transition mode PFC controller RoHS:否 制造商:Fairchild Semiconductor 開關(guān)頻率:300 KHz 最大功率耗散: 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Reel |
| L6563CYTR | 制造商:ST 功能描述:ADVANCED TRANSITION-MODE PFC CONTROLLER |
| L6563H | 功能描述:功率因數(shù)校正 IC High voltage start Transition-mode PFC RoHS:否 制造商:Fairchild Semiconductor 開關(guān)頻率:300 KHz 最大功率耗散: 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Reel |
| L6563HTR | 功能描述:功率因數(shù)校正 IC 700V 6mA Start-Up Transition-Mode PFC RoHS:否 制造商:Fairchild Semiconductor 開關(guān)頻率:300 KHz 最大功率耗散: 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Reel |
| L6563S | 功能描述:功率因數(shù)校正 IC Transition Mode PFC 5mA 90uA 1.5% Ref RoHS:否 制造商:Fairchild Semiconductor 開關(guān)頻率:300 KHz 最大功率耗散: 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Reel |
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