The Infineon PFC + Resonant half-bridge controller is a highly integrated multi-mode PFC and resonant HB combination controller. The integration of PFC and HB into a single controller enables reduction of external components and optimizes performance by harmonized operation of the two stages. The two-stage approach divides the PFC responsibilities from the output current regulations functions. This ensures low variation in the output voltage and current and allows for low THD, high power factor and a greater ability to withstand AC line perturbations. The multi-mode operation of PFC converter provides excellent efficiency over the whole load range.

Resonant half-bridge controller with fixed or variable switching frequency control
Maximum 500 KHz HB switching frequency and soft-start frequency up to 1.3 MHz
Resonant HB Hurst mode ensures power limitation and low standby power < 300mW
Supports universal AC input voltage nominal
Excellent system efficiency up to 94%
THD optimization ensures Low harmonic distortion down to 30% nominal load
Integrated High Side MOSFET driver