International Rectifier Designs IRS2548D LED Control IC for HB LED

International Rectifier, IR® has designed the IRS2548D Switched Mode Power Supply (SMPS) control IC available for high power LED illumination including LED street lighting, stadium lighting and theatrical lighting.

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

The new device achieves PWM dimming down to less than 2 percent light output and offers protection features that include programmable PFC and half-bridge over-current protection, latch immunity, and ESD protection.

Besides, it also includes variable frequency oscillator, fixed internal 1.6us deadtime, internal bootstrap MOSFET, internal 15.6V zener clamp diode on Vcc, and micropower startup (250μA).

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