International Rectifier Corp. (IR, El Segundo, CA) introduced the new IRIS4009 integrated switcher, which combines a control IC and a low-loss, rugged HEXFET® power MOSFET in a single, five-pin package for ac/dc power supplies up to 30W. The new device is suitable for space-constrained flyback converters up to 30W, commonly found in universal and single-input ac/dc power supplies for consumer electronics and adapters, and also as a housekeeping supply in larger ac/dc power supplies or motor drives, up to 30W open-frame, or 15W in closed-frame configurations.
The IRIS4009 is available in the TO-220 and the reduced-height TO-262 package for space-restricted applications. In addition, the IRIS4009 is a more rugged device with an avalanche energy rating of 100mJ. The IRIS Series of switchers optimize performance by changing between a pulse-ratio-control mode at low-load conditions and a quasi-resonant mode at high load. Other features include a primary-current mode, a secondary-voltage mode, VCC over-voltage protection (latched), and over-current and over-temperature protection.
Pricing for the IRIS4009 in the TO-220 package is $1.68 each, and the IRIS4009K in the TO-262 package is $1.64 each, both in 10,000-unit quantities.
