Description

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.

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
• Adjustable Blanking Window for high load jumps to increase system reliability

Features

• 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