EE Product News

Integrated Switchers Shrink And Reduce Component Count

product pic

The IRIS Series integrated switchers are said to simplify design and reduce pc board area and component count by 25% at the same or better efficiency than discrete-based circuits in switched mode power supplies. The devices combine a low-loss, fully characterized avalanche energy HEXFET power MOSFET with a dual-mode voltage and current control IC and are optimized for flyback topologies in universal- and single-input, 60W to 180W swirchers.Six devices in the series provide on-resistances from 0.9½ to 3.95½ and maximum switching currents from 2.5A to 8A. They can operate in either a quasi-resonant or pulse ratio control (PRC) mode. In quasi-resonant mode, switching is done when the drain voltage is at the lowest point of oscillation to reduce switching lossesÑPRC mode is preferred when a low-current standby mode may be required. In 5-pin TO-220 and TO-262 packages, prices start at $1.14 each/1,000. International rectifier CORP., El Segundo, CA. (310) 252-7105.

Hide comments


  • Allowed HTML tags: <em> <strong> <blockquote> <br> <p>

Plain text

  • No HTML tags allowed.
  • Web page addresses and e-mail addresses turn into links automatically.
  • Lines and paragraphs break automatically.