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).
Phone: 02 9585 5511
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