Features
• 650V Avalanche Rugged CoolMOS® with built in
switchable Startup Cell
• Active Burst Mode for lowest Standby Power
@ light load controlled by Feedback Signal
• Fast Load Jump Response in Active Burst Mode
• 67 kHz fixed Switching Frequency
• Auto Restart Mode for Over temperature
Detection
• Auto Restart Mode for Overvoltage Detection
• Auto Restart Mode for Overload and Open Loop
• Auto Restart Mode for VCC Undervoltage
• User defined Soft Start
• Minimum of external Components required
• Max Duty Cycle 75%
• Overall Tolerance of Current Limiting < ±5%
• Internal Leading Edge Blanking
• BiCMOS technology provides wide VCC Range
• Frequency Jittering for Low EMI
Description
The CoolSET®-F3(Jitter version) meets the requirements
for Off-Line Battery Adapters and low cost SMPS for the
lower power range. By use of a BiCMOS technology a wide
VCC range up to 26V is provided. This covers the changes
in the auxiliary supply voltage if a CV/CC regulation is
implemented on the secondary side. Furthermore an Active
Burst Mode is integrated to fullfill the lowest Standby Power
Requirements <100mW at no load and Vin = 270VAC. As
during Active Burst Mode the controller is always active
there is an immediate response on load jumps possible
without any black out in the SMPS. In Active Burst Mode
the ripple of the output voltage can be reduced <1%.
Furthermore Auto Restart Mode is entered in case 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.