參數(shù)資料
型號(hào)： L6563_07
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)的過(guò)渡模式PFC控制器
文件頁(yè)數(shù)： 17/39頁(yè)
文件大小： 565K
代理商： L6563_07
L6563 - L6563A
Application information
17/39
An important advantage of this technique is that the overvoltage level can be set
independently of the regulated output voltage: the latter depends on the ratio of R1 to R2,
the former on the individual value of R1. Another advantage is the precision: the tolerance of
the detection current is 15%, which means 15% tolerance on the
V
O
. Since it is usually
much smaller than Vo, the tolerance on the absolute value will be proportionally reduced.
Example: V
O
= 400V,
V
O
= 40V.
Then: R1 = 40V/20μA = 2M
; R2 = 2.5·2M
·/(400-2.5) = 12.58k
.
The tolerance on the OVP level due to the L6563/A will be 40·0.15 = 6 V, that is ± 1.36%.
When either OVP is activated the quiescent consumption is reduced to minimize the
discharge of the Vcc capacitor.
Figure 34. Output voltage setting, OVP and FFP functions: internal block diagram
-
+
2.5V
L6563
L6563A
1
2
INV
COMP
E/A
-
+
Frequency
Compensation
+
-
R2
7
PFC_OK
I
TBO
2.25V
Static OVP
Dynamic OVP
20 μA
Vout
{
R1a
R1b
R1
9.5V
FAULT (latched)
TBO
FUNCTION
R4
{
R3a
R3b
R3
+
-
FAULT (not latched)
0.26V
9.5V
相關(guān)PDF資料
PDF描述
L6563A ADVANCED TRANSITION-MODE PFC CONTROLLER
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
L6563A 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(kāi)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
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(kāi)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(kāi)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(kāi)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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