FSQ321 Overview
A Valley Switching Converter generally shows lower EMI and higher power conversion efficiency than a conventional hard-switched converter with a fixed switching frequency. The FSQ-series is an integrated Pulse-Width Modulation (PWM) controller and SenseFET specifically designed for valley switching operation with minimal external ponents. The PWM controller includes an integrated fixed-frequency oscillator,...
FSQ321 Key Features
- Optimized for Valley Switching Converter (VSC)
- Low EMI through Variable Frequency Control and
- High Efficiency through Minimum Voltage Switching
- Narrow Frequency Variation Range Over Wide Load
- Advanced Burst-Mode Operation for Low Standby
- Pulse-by-Pulse Current Limit
- Protection Functions: Overload Protection (OLP)
- Under-Voltage Lockout (UVLO) with Hysteresis
- Internal Startup Circuit
- Internal High-Voltage SenseFET: 650V
FSQ321 Applications
- Design Guidelines for Offline Flyback
- Troubleshooting and Design Tips for
- Design Guidelines for RCD Snubber of
- Design Guidelines for Flyback
- Design Guidelines for Off-line Forward
