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 Inherent
- High Efficiency through Minimum Voltage Switching
- Narrow Frequency Variation Range Over Wide Load and Input
- Advanced Burst-Mode Operation for Low Standby Power
- Pulse-by-Pulse Current Limit
- Protection Functions: Overload Protection (OLP), Over-Voltage
- Under-Voltage Lockout (UVLO) with Hysteresis
- Internal Startup Circuit
- Internal High-Voltage SENSEFET: 650 V
FSQ321 Applications
- Power Supplies for DVD Player
