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Documents UCC29950
SLUSC18A – SEPTEMBER 2014 – REVISED MARCH 2015 UCC29950 CCM PFC and LLC Combo Controller
1 Features 2 Applications 1 High Efficiency PFC and Half-Bridge Resonant
LLC Combo Controller
Continuous Conduction Mode (CCM) Boost Power
Factor Correction
Supports Self-Bias or Auxiliary (external) Bias
Mode of Operation
PFC Loops Fully Internally Compensated
PFC Stage Design in 3 Easy Steps
(design voltage feedback, current feedback and
power stage)
Fixed 100-kHz PFC Frequency with Dithering for
Ease of EMI Compliance
True Input Power Limit, Independent of Line
Voltage
Fixed LLC Frequency Operating Range of 70 kHz
to 350 kHz …
