Power Integrations has introduced new power factor correction (PFC) chips which are claimed to enable 98% efficient PFC designs up to 550W. Applications include data centers, commercial LED lighting, refrigerators, LCD TVs, cordless tool chargers and eBike battery chargers.
HiperPFS-4 power factor correction ICs offer 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.
The new devices incorporate a 600 V MOSFET suitable for 305 VAC input and a high efficiency, variable frequency, CCM PFC controller in a single, compact, electrically isolated, heatsinkable package.
The chips are said to 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 410 VAC input test, which ensures field reliability and robustness against voltage swells and surges, according to the firm.
The new ICs suit enclosed designs up to 300 W, open frame power supplies of up to 400 W and highline applications up to 550 W.
Protection features include UVLO, UV, OV, OTP, brown-in/out, cycle-by-cycle current limit and power limit.
Power consumption is less than 60 mW at 230 VAC while regulating output at no-load and less than 20 mW in sleep mode.
Comments Edward Ong, product marketing manager at Power Integrations: “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 600 V 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 305 VAC input for data centers and commercial LED lighting. Other applications include refrigerators (which increasingly contain high PFC specification requirements), cordless tool chargers and eBike battery chargers.”
HiperPFS-4 ICs are available in thermally-efficient eeSIP packaging, which simplifies heatsink mounting. Devices cost $1.46 in 10,000-piece quantities.
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