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Control IC offers 88% efficiency

Posted: 26 Apr 2011 ?? ?Print Version ?Bookmark and Share

Keywords:power supply? control IC? switched mode?

International Rectifier introduces the IRS2548D Switched Mode Power Supply (SMPS) control IC for energy efficient applications for high power Light Emitting Diode (LED) illumination including LED street lighting, stadium lighting and theatrical lighting.

The IRS2548D combines Power Factor Correction (PFC) and half-bridge driver in a single IC. It offers greater than 88 percent efficiency for a 40V/1.3A HBLED load to deliver a higher efficiency solution compared to alternative flyback converter solutions at power levels above 60W.

The new device achieves PWM dimming down to less than two percent light output and offers protection features that include programmable PFC and half-bridge overcurrent protection, latch immunity, and ESD protection.

The IRS2548D also includes variable frequency oscillator, fixed internal 1.6us deadtime, internal bootstrap MOSFET, internal 15.6V zener clamp diode on Vcc, and micropower startup (250?A).

Production quantities are available immediately. The devices are lead free and RoHS compliant.

A datasheet and application note is available on the International Rectifier website. The IRPLLED5 reference design kit, featuring the IRS2548D is also available.

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