Description
ORDERING INFORMATION
The UCC2817 and UCC2818 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 with TI's BiCMOS process, the UCC2817 and UCC2818 offers new
Features
- 1.
- 2 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.