Datasheet Details
Part number:
UCC2819, UCC3819
Manufacturer:
File Size:
444.90 KB
Description:
Power factor preregulator.
Note:
This datasheet PDF includes multiple part numbers: UCC2819, UCC3819.
Please refer to the document for exact specifications by model.
UCC2819, UCC3819, Power Factor Preregulator
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,
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 10.8-V to 17-V Operation D Programmable Output Voltage (Tracking Boost Topology) UCC2819, UCC3819 PROGRAMMABLE OUTPUT POWER FACTOR PREREGULATOR SLUS482B - APRIL 2001
UCC2819 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 noninvert
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