ICE3AS02_05 Datasheet, PDF (3/22 Pages) Infineon Technologies AG – Off-Line SMPS Current Mode Controller with integrated 500V Startup Cell

F3
ICE3AS02 / ICE3BS02
ICE3AS02G / ICE3BS02G
Off-Line SMPS Current Mode Controller
with integrated 500V Startup Cell
Product Highlights
• Active Burst Mode to reach the lowest Standby Power
Requirements < 100mW
PG-DIP-8
test
• Protection features (Auto Restart Mode) to increase
robustness and safety of the system
• Adjustable Blanking Window for high load jumps to increase
system reliability
• PB-free Plating and RoHS compilant
PG-DSO-8
Features
Description
P-DSO-8-3, -6
• 500V Startup Cell switched off after Start Up
• Active Burst Mode for lowest Standby Power
@ light load controlled by Feedback Signal
• Fast load jump response in Active Burst Mode
• 100/67kHz internally fixed switching frequency
• Auto Restart Mode for Overtemperature Detection
• Auto Restart Mode for VCC Overvoltage Detection
• Auto Restart Mode for Overload and Open Loop
• Auto Restart Mode for VCC Undervoltage
• Blanking Window for short duration high current
• User defined Soft Start
• 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
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 the ripple of the output
voltage can be reduced <1%. Furthermore, to increase the
robustness and safety of the system, the device enters into Auto
Restart Mode in the 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.
Typical Application
85 ... 270 VAC
GND
C_Bulk
HV
Startup Cell
Power
Management
VCC
C_VCC
PWM Controller
Current Mode
Precise Low
Tolerance Peak
Current Limitation
Control Unit
Active Burst Mode
Auto Restart Mode
ICE3AS02/G ICE3BS02/G
Snubber
Gate
CS
R_Sense
FB
SoftS
C_SoftS
Type
ICE3AS02
ICE3BS02
ICE3AS02G
ICE3BS02G
Version 1.2
F_OSC
100kHz
67kHz
100kHz
67kHz
3
Package
PG-DIP-8
PG-DIP-8
PG-DSO-8
PG-DSO-8
+
Converter
DC Output
-
02 Sep 2005