IR reference design streamlines SMPS

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.