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Design UCC28050, UCC28051, UCC38050, UCC38051
SLUS515G – SEPTEMBER 2002 – REVISED DECEMBER 2015 UCC2805x, UCC3805x Transition Mode PFC Controller
1 Features 3 Description The UCC38050 and UCC38051 are PFC controllers
for low-to-medium power applications requiring
compliance with IEC 1000-3-2 harmonic reduction
standard. The controllers are designed for a boost
preregulator operating in transition mode (also
referred to as boundary-conduction mode or critical
conduction-mode operation). They feature a
transconductance voltage amplifier for feedback error
processing, a simple multiplier for generating a
current command proportional to the input voltage, a
current-sense (PWM) comparator, PWM logic, and a
totem-pole driver for driving an external FET. 1 Transition Mode PFC Controller for Low
Implementation Cost
Industry Pin Compatibility With Improved Feature
Set …
