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UCC3819 Datasheet Power Factor Preregulator

Manufacturer: Texas Instruments

Overview: ą D Controls Boost Preregulator to Near-Unity Power Factor D World Wide Line Operation D Over-Voltage Protection D Accurate Power Limiting D Average Current Mode Control D Improved Noise Immunity D Improved Feed-Forward Line Regulation D Leading Edge Modulation D 150-µA Typical Start-Up Current D Low-Power BiCMOS Operation D 10.

General Description

The UCC2819/UCC3819 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.

Key Features

  • such as lower start-up current, lower power dissipation, overvoltage protection, a shunt UVLO detect circuitry and a leading-edge modulation technique to reduce ripple current in the bulk capacitor. The UCC3819 allows the output voltage to be programmed by bringing out the error amplifier noninverting input. Available in the 16-pin D, DW, N, and PW packages. block diagram VCC 15 OVP/EN 10 7.5 V.

More Datasheets from Texas Instruments

Part Number Description
UCC3819A Power Factor Preregulator
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UCC3813-0 PWM
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UCC3813-3 PWM
UCC3813-4 PWM
UCC3813-5 PWM
UCC3817 BiCMOS Power Factor Pregulator
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UCC3819 Distributor