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參數(shù)資料
| 型號： | ICE3BS02L |
| 廠商： | INFINEON TECHNOLOGIES AG |
| 英文描述： | Off-Line SMPS Current Mode Controller with integrated 500V Startup Cell and Latched off Mode |
| 中文描述： | 離線式開關(guān)電源電流模式控制器，集成了500V啟動細胞和鎖存關(guān)閉模式 |
| 文件頁數(shù)： | 13/21頁 |
| 文件大?。?/td> | 517K |
| 代理商： | ICE3BS02L |
F3
ICE3BS02L
Functional Description
Version 1.1
13
28 Sep 2005
gate G10. Maximum current can now be provided to
stabilize V
OUT
.
Figure 16
Signals in Active Burst Mode
3.6.3
The IC provides several protection features which are
separated into two categories. Some enter Latched Off
Mode, the others enter Auto Restart Mode. The Latched Off
Mode can only be reset if VCC is falling below 6V. Both
modes prevent the SMPS from destructive states. The
following table shows the relationship between possible
system failures and the chosen protection modes.
Protection Modes
3.6.3.1
Latched Off Mode
Figure 17
Latched Off Mode
The VCC voltage is observed by comparator C1 if 21V is
exceeded. The output of C1 is combined with the output of
C4 which observes FB signal if 4.8V is exceeded. Therefore
the overvoltage detection is only activated if the FB signal is
1.32V
4.00V
3.40V
4.80V
V
FB
4.40V
5.40V
V
SoftS
t
t
0.257V
1.00V
V
CS
8.5V
V
VCC
t
t
1.05mA
I
VCC
t
7.2mA
V
OUT
t
Max. Ripple < 1%
Blanking Wndow
Current limt level during
Active Burst Mode
Entering Active
Burst Mode
Leaving Active
Burst Mode
VCC Overvoltage
Latched Off Mode
Overtemperature
Latched Off Mode
Short Winding/Short Diode
Latched Off Mode
Overload
Auto Restart Mode
Open Loop
Auto Restart Mode
VCC Undervoltage
Auto Restart Mode
Short Optocoupler
Auto Restart Mode
C1
21V
Spike
Blanking
8.0us
&
G1
1
G3
Thermal Shutdown
T
j
>140°C
Latched
Off Mode
VCC
C4
4.8V
FB
C11
1.66V
Spike
Blanking
190
ns
CS
Voltage
Reference
Control Unit
Latched Off
Mode Reset
V
VCC
< 6V
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