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UCC2818A-Q1 Datasheet

Part Number UCC2818A-Q1
Manufacturers Texas Instruments
Logo Texas Instruments
Description BiCMOS Power-Factor Preregulator
Datasheet UCC2818A-Q1 DatasheetUCC2818A-Q1 Datasheet (PDF)

Product Folder Sample & Buy Technical Documents Tools & Software Support & Community UCC2818A-Q1 SLUSA21A – FEBRUARY 2010 – REVISED DECEMBER 2014 UCC2818A-Q1 BiCMOS Power-Factor Preregulator 1 Features •1 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 Reg.

  UCC2818A-Q1   UCC2818A-Q1






BiCMOS Power-Factor Preregulator

Product Folder Sample & Buy Technical Documents Tools & Software Support & Community UCC2818A-Q1 SLUSA21A – FEBRUARY 2010 – REVISED DECEMBER 2014 UCC2818A-Q1 BiCMOS Power-Factor Preregulator 1 Features •1 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 • Leading Edge Modulation • 150-μA Typical Start-Up Current • Low-Power BiCMOS Operation • 12-V to 17-V Operation • Frequency Range of 6 kHz to 220 kHz 2 Applications • Automotive 3 Description The UCC2818A-Q1 device provides all the functions necessary for active power factor corrected preregulators. The controller achieves near unity power factor by shaping the ac input line current waveform to correspond to that of the ac input line voltage. Average current mode control maintains stable, low distortion sinusoidal line current. 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 (±2 mV) current amplifier to reduce distortion at light load conditions. The UCC2818A-Q1 PFC controller is directly pin-forpin compatible with .


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