UCC28070

The UCC28070 is an advanced power factor correction device that integrates two pulse-width Tmhoisdulationrtserle(PaWveMds) PopWeMratingop1e8r0a°tioonut ogfenpehraastees. substantial reduction in the input and output ripple currents, and the conducted-EMI filtering becomes easier and less expensive. A significantly improved  moulttwipolieirnddeepsiegnndepnrotvciduersreantshaamrpeldifiecursrrethnat treefenrseunrcee matched average current mode control in both PWM outputs while maintaining a stable, low-distortion sinusoidal input line current.

The UCC28070 contains multiple innovations including current synthesis and quantized voltage feed-forward to promote performance enhancements in PF, efficiency, THD, and transient response. Features including frequency dithering, clock synchronization, and slew rate enhancement further expand the potential performance enhancements.

The UCC28070 also contains a variety of protection features including output over-voltage detection, programmable peak-current limit, under-voltage lockout, and open-loop protection.