ICE2AS01_06 Datasheet, PDF (3/24 Pages) Infineon Technologies AG – Off-Line SMPS Current Mode Controller

ICE2AS01/S01G
ICE2BS01/S01G
Off-Line SMPS Current Mode Controller
Product Highlights
• Enhanced Protection Functions all
with Auto Restart
• Lowest Standby Power Dissipation
• Very Accurate Current Limiting
• PB-free Plating and RoHS compliant
PP-GD-DIIPP--88-4
P-_PD_GS_-DO_SO-8_-8-3
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 Angel” 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 gate driving 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.
Typical Application
85 ... 270 VAC
R_Start-up
VCC
C_VCC
Low Power
Power
StandBy Management
Snubber
Feedback
+
Converter
DC Output
-
SoftS
C_{Soft Start}
FB
Soft-Start Control
PWM Controller
Current Mode
Precise Low Tolerance
Peak Current Limitation
Protection Unit
Gate
Isense
GND
R_Sense
ICE2AS01(G) / ICE2BS01(G)
Feedback
Type
ICE2AS01
ICE2AS01G
ICE2BS01
ICE2BS01G
Datasheet
Frequency
100kHz
100kHz
67kHz
67kHz
3
Package
PG-DIP-8
PG-DSO-8
PG-DIP-8
PG-DSO-8
30 Jun 2006