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IR reference design streamlines SMPS

Posted: 28 Jun 2004 ?? ?Print Version ?Bookmark and Share

Keywords:international rectifier? ir? irismps5? flyback power supply? reference design?

International Rectifier (IR) rolled out the IRISMPS5 flyback power supply reference design for the IRIS4015 integrated switcher.

The new reference design is a universal input, 15V, 6A output ac-dc power supply that can streamline switch mode power supply (SMPS) designs used in products such as LCD monitors, CD/DVD players, fax machines, printers and STBs.

Stephen Oliver, marketing manager for ac-dc products, said, "The IRIS Series integrated switchers are ideal for designers seeking a simple and efficient power stage, reducing PCB area and component count by 25 percent at the same or better efficiency than discrete-based circuits."

"This reference design implements all the features of the IRIS4015, including overvoltage and overtemperature protection with variable overcurrent protection," Oliver added. "By offering system designers a complete power solution, more time can be spent on other critical factors outside of the power stage."

The integrated switchers combine a low-loss, fully characterized avalanche energy HEXFET power MOSFET with a dual-mode voltage and current control IC in a single package. Stray inductance from the PCB and discrete packages is reduced, delivering lower switching losses at higher frequencies. In-circuit testing demonstrates that these switchers improve efficiency by up to 1.5 percent compared to a discrete solution with equivalent MOSFET ratings and up to 4.5 percent compared to competitive devices with equivalent ratings.

The IRISMPS5 reference design is already available for $280 each.





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