F3
ICE3AS02 / ICE3BS02
ICE3AS02G / ICE3BS02G
Off-Line SMPS Current Mode Controller
with integrated 500V Startup Cell
Product Highlights
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Leadfree DIP package
Active Burst Mode to reach the lowest Standby Power
Requirements < 100mW
PG-DIP-8-6
test
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Protection features (Auto Restart Mode) to increase
robustness and safety of the system
Adjustable Blanking Window for high load jumps to
increase system reliability
P-DSO-8-8
Features
Description
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Active Burst Mode for lowest Standby Power
@ light load controlled by Feedback Signal
Fast load jump response in Active Burst Mode
500V Startup Cell switched off after Start Up
100/67kHz internally fixed switching frequency
The F3 Controller provides Active Burst Mode to reach the
lowest Standby Power Requirements <100mW at no load.
As the controller is always active during Active Burst
Mode, there is an immediate response on load jumps
without any black out in the SMPS. In Active Burst Mode
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Auto Restart Mode for Overtemperature Detection the ripple of the output voltage can be reduced <1%.
Auto Restart Mode for VCC Overvoltage Detection Furthermore, to increase the robustness and safety of the
Auto Restart Mode for Overload and Open Loop system, the device enters into Auto Restart Mode in the
Auto Restart Mode for VCC Undervoltage
Blanking Window for short duration high current
User defined Soft Start
cases of Overtemperature, VCC Overvoltage, Output
Open Loop or Overload and VCC Undervoltage. By
means of the internal precise peak current limitation, the
dimension of the transformer and the secondary diode can
be lowered which leads to more cost efficiency. An
adjustable blanking window prevents the IC from entering
Auto Restart Mode or Active Burst Mode unintentionally in
case of high load jumps.
Minimum of external components required
Max Duty Cycle 72%
Overall tolerance of Current Limiting < ±5%
Internal PWM Leading Edge Blanking
Soft switching for low EMI
Typical Application
+
Converter
Snubber
CBulk
DC Output
85 ... 270 VAC
-
CVCC
HV
Startup Cell
VCC
PWMController
Current Mode
Gate
CS
Precise Low
Tolerance Peak
Current Limitation
Power
RSense
Management
Control Unit
FB
Active Burst Mode
GND
SoftS
Auto Restart Mode
CSoftS
ICE3AS02/G ICE3BS02/G
Type
Ordering Code
FOSC
Package
ICE3AS02
ICE3BS02
ICE3AS02G
ICE3BS02G
Q67040-S4661-A101
Q67040-S4637-A101
100kHz
67kHz
100kHz
67kHz
PG-DIP-8-6
PG-DIP-8-6
P-DSO-8-8
P-DSO-8-8
Version 1.1
3
21 May 2004
INFINEON [ Infineon ]
