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Reference Design
UCC28050, UCC28051, UCC38050, UCC38051
SLUS515G – SEPTEMBER 2002 – REVISED DECEMBER 2015
UCC2805x, UCC3805x Transition Mode PFC Controller
1 Features
•1 Transition Mode PFC Controller for Low Implementation Cost
• Industry Pin Compatibility With Improved Feature Set
• Improved Transient Response With Slew-Rate Comparator
• Zero Power Detect to Prevent Overvoltage Protection (OVP) During Light Load Conditions
• Accurate Internal VREF for Tight Output Regulation
• Two UVLO Options • OVP, Open-Feedback Protection, and Enable
Circuits • ±750-mA Peak Gate Drive Current • Low Start-Up and Operating Currents • Lead (Pb)-Free Packages
3 Description
The UCC38050 and UCC38051 are PFC control