Power Integrations today announced its HiperPFS™-3 family of power factor correction ICs, which offer high power factor and high efficiency across the entire load range. Targeting 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% from 10% load to full load and consume less than 60 mW under no-load conditions. A power factor of above 0.92 is easily achievable at 20% load.
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The highly integrated HiperPFS-3 devices include the variable frequency CCM controller, high-voltage power MOSFET and a Qspeed™ low QRR boost diode. The new 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.
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Comments Edward Ong, product marketing manager at Power Integrations: “Standby energy-use standards such as ErP Lot 6 have previously forced designers of PCs and other systems to include both a main PSU and standby power supply. The excellent light load efficiency of our new HiperPFS-3 ICs enables them to eliminate the standby power supply, saving components, design time, space and cost.”
Available for both high and low-line applications, HiperPFS-3 ICs cover a continuous output power up to 900 W. Thermally efficient eSIP-16 packaging simplifies heat sink mounting. Devices cost $1.27 in 10,000 piece quantities.
source: http://www.powerpulse.net/story.php?storyID=32500
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