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HiperPFS-3 series data sheet - .PDF file.

Power Integrations has introduced the HiperPFS-3 series of power-factor-correction ICs. The ICs are designed to offer high power factor and high efficiency across the entire load range. Suitable for applications with continuous power demands up to 405W for universal input and 900W for high line, the ICs feature efficiency levels of better than 95 per cent from 10 per cent load to full load and consume less than 60mW under no-load conditions. A power factor of above 0.92 is easily achievable at 20 per cent load.

The highly integrated HiperPFS-3 devices include the variable-frequency CCM controller, a high-voltage power MOSFET and a Qspeed low-QRR boost diode.

According to the company, the devices also employ an innovative means of controlling EMI without adversely affecting power factor at light loads. Poor system power factor at light load is caused by X capacitors that are used to reduce differential mode EMI being fed back to the AC line. HiperPFS-3 ICs incorporate a digital power-factor-enhancing circuit that activates during light load conditions; this increases the compensation to overcome the reactance of X capacitors in the EMI filter, minimising the phase angle difference between the input voltage and the current. Consequently, designers may increase the size of the X capacitors while minimising or eliminating differential-mode chokes, thereby reducing EMI without degrading light-load power-factor performance. This results in a smaller, lower-cost, EMI filter stage.

Available for both high- and low-line applications, HiperPFS-3 ICs cover a continuous output power up to 900W. Thermally efficient eSIP-16 packaging simplifies heatsink mounting.

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Power Integrations

Power Integrations is the leading supplier of high-voltage integrated circuits used in energy-efficient power conversion. The company’s innovative technology enables compact, energy-efficient power supplies in a wide range of electronic products, in AC-DC, DC-DC and LED lighting applications. Since its introduction in 1998, Power Integrations’ EcoSmartä energy-efficiency technology has saved an estimated $4.5 billion of standby energy waste and prevented millions of tons of CO2 emissions. The company’s Green Room web site provides a wealth of information about “energy vampires” and the issue of standby energy waste, along with a comprehensive guide to energy-efficiency standards around the world. Reflecting the environmental benefits of EcoSmart technology, Power Integrations is included in clean-technology stock indices sponsored by the Cleantech Group (Amex: CTIUS) and Clean Edge (Nasdaq: CELS).

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