The UCC28070A power factor corrector IC controls two CCM (Continuous Conduction Mode) Boost PFC power stages operating 180° out of phase with each other. This interleaving action reduces the input and output ripple currents so that less EMI filtering is needed and allows operation at higher power levels than a non-interleaved solution.

The UCC28070A can operate over a wide range of frequencies, making it suitable for use with both MOSFET and IGBT power switches. Multiple UCC28070A controllers can be synchronized for use in higher-power applications where more than two interleaved power stages are needed.

This device is especially suited to high-performance, high-power, PFC applications where the use of Average Current Mode PWM control gives low THD.