LED-control IC combines PFC, half-bridge driver

LED-control IC combines PFC, half-bridge driver

Designed for energy-efficient applications, such as LED street lighting, stadium lighting, and theatrical lighting, the IRS2548D switch-mode power supply (SMPS) control IC is offered to simplify design and reduce overall system cost by combining power factor correction (PFC) and half-bridge driver in a single IC. It offers greater than 88% efficiency for a 40-V/1.3-A HBLED load and delivers a higher efficiency solution compared to 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 over-current protection, latch immunity, and ESD protection. The IRS2548D also includes a variable-frequency oscillator, fixed internal 1.6-µs deadtime, an internal bootstrap MOSFET, an internal 15.6-V zener clamp diode on VCC , and micropower startup (250 μA). (From $1.45 ea/10,000 — prod qty, available now.)

By Christina Nickolas

International Rectifier , El Segundo , CA

Sales 310-252-7105
http://www.irf.com