iW2202 Digital Single-Stage PF

? Active, single-stage PFC controller provides unity powerfactor& 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