參數(shù)資料
型號： ICE1QS01G
廠商： INFINEON TECHNOLOGIES AG
元件分類： 基準電壓源/電流源
英文描述： Controller for Switch Mode Power Supplies Supporting Low Power Standby and Power Factor Correction (PFC)
中文描述： 控制器開關電源支持低功耗待機和功率因數(shù)校正（PFC物料供應）
文件頁數(shù)： 10/21頁
文件大?。?/td> 484K
代理商： ICE1QS01G
ICE1QS01
Version 1.4
10
27
Apr 2004
Primary regulation
Primary regulation is achieved by activating the internal current sink. The current sink is connected
between pin SRC and ground. If V
RZI
exceeds the 5V threshold the current sink is switched on. It is
switched off when V
RZI
falls below 5V. The current sink discharges the C
SRC
capacitor. C
SRC
is
charged via the internal 20k resistor. If V
RZI
exceeds the 4.4V threshold a flip-flop is set and the
resistor is switched off when V
RZI
falls below 50 mV. The resistor is switched on again with the fall-
ing slope of gate drive OUT.
Diagram Primary Regulation
RZI
SRC
5V
20k
+
-
5 V
current
sink
ICE1QS01
4.5 V
0.05 V
+
-
-
+
R
S
Q
Q
R
S
Q
Q
R
S
Q
Q
OUT
start
stop
VRZI
5V
OUT
4.5V
20K
resistor
current
sink
VSRC
zero current counter = 0010
t
on
off
on
off
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相關代理商/技術參數(shù)
參數(shù)描述
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