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UCC3817A Datasheet

Part Number UCC3817A
Manufacturers Texas Instruments
Logo Texas Instruments
Description BiCMOS Power Factor Preregulator
Datasheet UCC3817A DatasheetUCC3817A Datasheet (PDF)

Product Folder Sample & Buy Technical Documents Tools & Software Support & Community UCC2817A, UCC2818A, UCC3817A, UCC3818A SLUS577D – NOVEMBER 2011 – REVISED AUGUST 2016 UCCx81xA BiCMOS Power Factor Preregulator 1 Features •1 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 E.

  UCC3817A   UCC3817A






Part Number UCC3817
Manufacturers Texas Instruments
Logo Texas Instruments
Description BiCMOS Power Factor Pregulator
Datasheet UCC3817A DatasheetUCC3817 Datasheet (PDF)

Product Folder Sample & Buy Technical Documents Tools & Software Support & Community UCC2817, UCC2818, UCC3817, UCC3818 SLUS395K – FEBRUARY 2000 – REVISED OCTOBER 2015 UCC2817, UCC2818, UCC3817 and UCC3818 BiCMOS Power Factor Pregulator 1 Features •1 Controls Boost Preregulator to Near-Unity Power Factor • Limits Line Distortion • World Wide Line Operation • Over-Voltage Protection • Accurate Power Limiting • Average Current Mode Control • Improved Noise Immunity • Improved Feed-Forward Li.

  UCC3817A   UCC3817A







BiCMOS Power Factor Preregulator

Product Folder Sample & Buy Technical Documents Tools & Software Support & Community UCC2817A, UCC2818A, UCC3817A, UCC3818A SLUS577D – NOVEMBER 2011 – REVISED AUGUST 2016 UCCx81xA BiCMOS Power Factor Preregulator 1 Features •1 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 • PC Power • Consumer Electronics • Lighting • Industrial Power Supplies • IEC6100-3-2 Compliant Supplies Less Than 300 W 3 Description The UCC3817A and the UCC3818A family 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 UCC3817A/UCC3818A 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 dist.


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