Control IC enables high-power LED lighting

International Rectifier introduces the IRS2548D Switched Mode Power Supply (SMPS) control IC for high-power LED illumination, including LED street lighting as well as stadium and theatrical lighting.
April 15, 2011

International Rectifier introduces the IRS2548D Switched Mode Power Supply (SMPS) control IC for high-power LED illumination, including LED street lighting as well as stadium and theatrical lighting.

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

The new device achieves PWM dimming down to less than 2% light output and offers protection features that include programmable PFC and half-bridge over-current protection, latch immunity, and ESD protection. The IRS2548D also includes a variable frequency oscillator, fixed internal 1.6us deadtime, internal bootstrap MOSFET, internal 15.6 V zener clamp diode on Vcc, and micropower startup (250μA).

For more information, contact International Rectifier, 233 Kansas St., El Segundo, CA 90245. Phone: (310) 252-7105.

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