Features

• Active, single-stage PFC controller provides unity power-factor & low THD (< 5%)
• Low parts count for low system cost and small size
• Over 90% efficiency possible
• Primary-side control eliminates opto-coupler and secondary-side reference
• No external loop compensation required
• Active voltage positioning compensates cable IR drop
• Primary-side power for constant current operation
• Fast transient response
• Digital control enables simple design
• Critical DCM operation (valley-mode switching) minimizes EMI and improves system efficiency
• Blue AngelTM and Energy Star® compliant
• Built-in start-up signal to drive active start-up circuit
• 20µA typical start-up current
• Built-in gate drive with ±1A peak output current
• Built-in soft-start
• Built-in cycle-by-cycle short-circuit protection