DESCRIPTION

· The UCC28019A is an 8-pin active Power Factor Correction (PFC) controller designed for Continuous Conduction Mode (CCM) boost topology.

· Suitable for systems ranging from 100W to over 2kW with wide-range universal AC line input.

· Features low start-up current during undervoltage lockout (less than 200μA) and user-controlled low-power standby mode.

· Achieves low-distortion wave shaping of input current without input line sensing, reducing external components.

· Includes numerous system-level protection features and a trimmed internal reference for accurate protection thresholds and regulation set-point.

FEATURES

· 8-pin solution reduces external components.

· Wide-range universal AC input voltage.

· Fixed 65-kHz operating frequency with ±5% accuracy at 25°C.

· Maximum duty cycle of 98% (typ.).

· Output over/undervoltage protection and input brown-out protection.

· Cycle-by-cycle peak current limiting and open loop detection.

· Low-power user-controlled standby mode.

· Fast 1.5-A peak gate current drive for external switch.

APPLICATIONS

· CCM Boost Power Factor Correction Power Converters in the 100W to >2kW range.

· Digital TV, home electronics, white goods, and industrial electronics.

· Server and desktop power supplies.