275 W PFC front end (not a complete power supply) using HiperPFS-4 IC with integrated Qspeed diode (PFS7727H)

• 90 VAC – 264 VAC input; 385 VDC output
• Low component count PFC with ultra-low reverse recovery loss diode
• Cool-Pad package eliminates insulating pad and heat-spreader
• Higher than 0.9 power factor at 20% load
• Higher than 0.95 power factor at 50% load
• Higher than 95% efficiency from 10% to 100% load (115 VAC abd 230 VAC input)