ICE3BS02L Datasheet, PDF (3/21 Pages) Infineon Technologies AG – Off-Line SMPS Current Mode Controller with integrated 500V Startup Cell and Latched off Mode

F3
ICE3BS02L
Off-Line SMPS Current Mode Controller
with integrated 500V Startup Cell and
Latched off Mode
Product Highlights
• Active Burst Mode to reach the lowest Standby Power
Requirements < 100mW
• Latched Off Mode and Auto Restart Mode to increase
robustness and safety of the system
P^teG^s-^t DIP-8-6
• Adjustable Blanking Window for high load jumps to
increase system reliability
• PB-free Plating and RoHS compliant
Features
Description
• 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
• 67kHz internally fixed switching frequency
• Latched Off Mode for Overtemperature Detection
• Latched Off Mode for Overvoltage Detection
• Latched Off Mode for Short Winding 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 driving 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
Latched Off Mode in the cases of Overtemperature,
Overvoltage or Short Winding. The Latched Off Mode can only
be reset by disconnecting the main line. Auto Restart Mode is
entered for cases like open loop or overload. By means of an
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
C _Bulk
Snubber
HV
VCC
C_VCC
GND
Startup Cell
Power
Management
ICE3BS02L
PWM Controller
Current Mode
Precise Low
Tolerance Peak
Current Limitation
Gate
CS
Control Unit
Active Burst Mode
Latched Off Mode
Auto Restart Mode
FB
SoftS
F3 with Latch off Mode
R_Sense
C _{S oftS}
+
Converter
DC Output
-
Type
ICE3BS02L
F_OSC
67kHz
Package
PG-DIP-8-6
Version 1.1
3
28 Sep 2005