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Magnetic ballast control IC eliminates the need for PFC in fluorescent lamps

Magnetic ballast control IC eliminates the need for PFC in fluorescent lamps

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By eeNews Europe



Available in a compact SO8 package, the chip uses a novel control method to achieve high power factor with ultra-low THD to eliminate the need for a Power Factor Correction (PFC) stage and electrolytic capacitor at the input. The new IC integrates a 600V half-bridge control circuit, bootstrap MOSFET and comprehensive set of protection features to further reduce component count and PCB area, and increase reliability.

Delivering all of the benefits of an electronic ballast solution the IRS2538DS is highly efficient, lightweight, and has no lamp flicker. The IRS2538DS also features preheat, ignition and running lamp modes, closed-loop lamp current control, fixed pre-heat time (2s typical), adaptive deadtime (0.5us to 1.5us typical), lamp insert auto-restart, micropower start-up (125uA) and an internal 15.6V Zener diode clamp on Vcc.

Visit International Rectifier at www.irf.com

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