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SLUSA21A – FEBRUARY 2010 – REVISED DECEMBER 2014 UCC2818A-Q1 BiCMOS Power-Factor Preregulator
1 Features 1 Designed in Texas Instrument’s BiCMOS process,
the UCC2818A-Q1 device offers new features such
as lower start-up current, lower power dissipation,
overvoltage protection, a shunt UVLO detect circuitry,
a leading-edge modulation technique to reduce ripple
current in the bulk capacitor and an improved, lowoffset (В±2 mV) current amplifier to reduce distortion at
light load conditions. Qualified for Automotive Applications
Controls Boost Preregulator to Near-Unity Power
Factor
Limits Line Distortion
World-Wide Line Operation
Overvoltage Protection
Accurate Power Limiting
Average Current Mode Control
Improved Noise Immunity
Improved Feed-Forward Line Regulation …
