International Rectifier IRS2548D power supply control IC

International Rectifier has introduced the IRS2548D switched mode power supply control IC for energy-efficient applications for high-power LED illumination including street, stadium and theatrical lighting.

The IC, that combines power factor correction and half-bridge driver in a single device, offers greater than 88% efficiency for a 40 V/1.3 A HBLED load to deliver a higher-efficiency solution compared with alternative flyback converter solutions at power levels above 60 W.

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

The IC also includes a variable frequency oscillator, fixed internal 1.6 µs deadtime, internal bootstrap MOSFET, internal 15.6 V zener clamp diode on Vcc and micropower startup (250 µA).