The HiperPFS-4 power factor correction (PFC) controller IC is now available with an integrated Qspeed low reverse recovery charge (Qrr) boost diode. This highly integrated solution delivers greater than 98% full-load efficiency in PCs, TVs, and similar applications between 75 W and 400 W.
The new HiperPFS-4 IC combines continuous conduction mode (CCM) PFC control circuitry, the boost diode, and a 600 V MOSFET in one device. Key benefits of the built-in boost diode include: The number of components mounted to the heatsink is reduced by half, leading to simpler designs and better thermal performance; Minimization of parasitic trace inductances, which results in greater robustness against AC line surges; Designs easily meet the 80% de-rating requirement when delivering a 385 VDC constant-voltage bus;
HiperPFS-4 ICs achieve a power factor of greater than 0.95 at above 20% load. The integrated Qspeed boost diode is optimized for ultra-low reverse recovery losses and approaches the performance of silicon carbide devices without increased costs.