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ICE2AS01 データシート(Datasheet) 3 Page - Infineon Technologies AG

部品番号. ICE2AS01
部品情報  PWM-FF IC
ダウンロード  24 Pages
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メーカー  INFINEON [Infineon Technologies AG]
ホームページ  http://www.infineon.com
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 3 page
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Version 2.0
3
1 Feb 2002
Type
Ordering Code
Frequency
Package
ICE2AS01
Q67040-S4472
100kHz
P-DIP-8-4
ICE2AS01G
Q67040-S4473
100kHz
P-DSO-8-3
ICE2BS01
Q67040-S4475
67kHz
P-DIP-8-4
ICE2BS01G
Q67040-S4476
67kHz
P-DSO-8-3
ICE2AS01/G
ICE2BS01/G
P-DIP-8-4
P-DSO-8-3
C
Soft Start
C
VCC
R
Start-up
VCC
-
Converter
DC Output
+
ICE2AS01 / ICE2BS01
Snubber
Power
Management
Protection Unit
Soft-Start Control
PWM Controller
Current Mode
FB
85 ... 270 VAC
Feedback
Feedback
Typical Application
Low Power
StandBy
Precise Low Tolerance
Peak Current Limitation
R
Sense
Isense
GND
SoftS
Gate
Off-Line SMPS Current Mode Controller
Product Highlights
• Enhanced Protection Functions all
with Auto Restart
• Lowest Standby Power Dissipation
• Very Accurate Current Limiting
Features
Only few external Components required
Input Undervoltage Lockout
67kHz/100kHz fixed Switching Frequency
Max Duty Cycle 72%
Low Power Standby Mode to support
“Blue Angle” Norm
Latched Thermal Shut Down
Overload and Open Loop Protection
Overvoltage Protection during Auto Restart
Adjustable Peak Current Limitation via
External Resistor
Overall Tolerance of Current Limiting
< ±5%
Internal Leading Edge Blanking
Soft Start
Soft Switching for Low EMI
Description
This stand alone controller provides several special
enhancements to satisfy the needs for low power standby
and protection features. In standby mode frequency
reduction is used to lower the power consumption and
provide a stable output voltage in this mode. The frequency
reduction is limited to 20kHz / 21.5 kHz (typ.) to avoid
audible noise. In case of failure modes like open loop,
overvoltage or overload due to short circuit the device
switches in Auto Restart Mode which is controlled by the
internal protection unit. By means of the internal precise
peak current limitation the dimension of the transformer and
the secondary diode can be lower which leads to more cost
efficiency.




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