UCC2817-EP - Texas Instruments

UCC2817-EP BiCMOS POWER-FACTOR PREREGULATOR

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 curre.

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 SUPPORTS DEFENSE, AEROSPACE, AND MEDICAL APPLICATIONS
• Controlled Baseline
• One Assembly/Test Site
• One Fabrication Site
• Available in Military (
  –55°C/125°C) Temperature Range(1)
• Extended Product Life Cycle
• Extended .