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PWM controller IC reduces solution footprint by 45%

Posted: 21 Mar 2006 ?? ?Print Version ?Bookmark and Share

Keywords:IR3624? pulse-width modulation? PWM? controller IC? International Rectifier?

IR3624 pulse-width modulation controller IC

International Rectifier (IR) introduced the IR3624, a 600kHz single-phase synchronous buck pulse-width modulation controller IC designed for high density, 10A non-isolated point-of-load (POL) regulators used in networking and communications systems. The 600kHz switching frequency is said to enable the use of a reduced footprint inductor and fewer output capacitors.

"The combination of the IR3624 with two small-can DirectFET MOSFETs allows designers to achieve twice the power density of previous solutions by reducing solution footprint by 45 percent," said Faisal Ahmad, IR's marketing manager for DC/DC computing products.

The IR3624 features integrated thermal shutdown and programmable over-current limit protection. It includes a 0.6V voltage reference, which allows a single POL regulator to support applications from ultra low-voltage DSPs to legacy 5V logic. According to the company, the IR3624 can start-up with a pre-biased output voltage without discharging the output.

Pricing for both the IR3624MPbF and the IR3624MTRPbF is 85 cents each in 10,000-unit quantities, and are available either in tubes or tape and reel. These new devices are Pb-free and are compliant with the RoHS directive.




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