Power factor correction ICs enable 98% efficient PFC designs

HiperPFS-4 devices incorporate a 600V MOSFET suitable for 305VAC input and a high efficiency, variable frequency, CCM PFC controller in a single, compact, electrically isolated, heatsinkable package. The IC family delivers high power factor, low THD and uniformly high efficiency across a wide output load range, allowing OEMs to meet the demanding 80 PLUS Platinum and Titanium power supply standards.

HiperPFS-4 ICs achieve a high power factor of above 0.95 and low THD even at 20% of rated load. The devices also meet the stringent surge requirements of major computer and entertainment equipment providers, such as the 1 second 410VAC input test, which ensures field reliability and robustness against voltage swells and surges.

The HiperPFS-4 ICs suit enclosed designs up to 300W, open frame power supplies of up to 400W and highline applications up to 550W. Protection features include UVLO, UV, OV, OTP, brown-in/out, cycle-by-cycle current limit and power limit. HiperPFS-4 ICs consume less than 60mW at 230VAC while regulating output at no-load and less than 20mW in sleep mode.

Edward Ong, Product Marketing Manager at Power Integrations commented: “The HiperPFS-4 product family offers very high efficiency and power factor plus low THD across a wide load range. The benefits afforded by the unique frequency-sliding control technology enable HiperPFS-4 designs to deliver very high efficiency down to very light load - important when targeting EU CoC requirements that include a 10% load efficiency measurement. The 600V integrated power MOSFET and sophisticated protection features make the IC family ideal for use in regions where input voltage fluctuations can be severe. HiperPFS-4 devices provide safe PFC operation with a good margin at 305VAC input for data centres and commercial LED lighting. Other applications include refrigerators (which increasingly contain high PFC specification requirements), cordless tool chargers and eBike battery chargers."