IR Introduces Industry's Smallest PFC Boost IC in a 5-pin SOT-23 Package

IR Introduces Industry's Smallest PFC Boost IC in a 5-pin SOT-23 Package

EL SEGUNDO, Calif.--(BUSINESS WIRE)-- International Rectifier, IR® (NYS: IRF) , a world leader in power management technology, today announced the introduction of the IRS2505LTRPbF, the industry's smallest power factor correction (PFC) boost IC in a 5-pin SOT23 package for switch mode power supply (SMPS), LED drivers, fluorescent and HID electronic ballast applications.

The IRS2505L extends IR's µPFCTM PFC control IC family and features a novel control system that can implement a PFC controller with only five pins, significantly reducing overall system size, component count and system cost. The IRS2505L may be configured to operate in critical conduction boost PFC, buck or flyback configuration.


The IC incorporates a free-running frequency oscillator with on- and off-time control of the boost power MOSFET. The on-time feature is used to maintain an accurate and constant DC bus output voltage while providing a sinusoidal-shaped AC mains input current for high power factor and ultra-low total harmonic distortion. The off-time is determined by the inductor current zero-crossing detection circuit that does not require a secondary winding, further cutting component count.

"Power factor correction continues to be a critical requirement for the world's electrical grids as more and more electronics are consumed in the marketplace. The IRS2505L is a very simple, yet versatile IC that includes several novel features and functions. The result is a solution that dramatically reduces circuit component count while delivering excellent PFC performance and output regulation," said Tom Ribarich, Director of Lighting Systems and Applications, IR's Energy Saving Products Business Unit.

The IRS2505L offers wide input voltage and load range, regulated DC bus output voltage and programmable DC bus voltage level. Protection features include DC bus over-voltage protection, programmable MOSFET over-current protection and integrated ESD protection on all pins. Micro-power start-up current, 20.8V internal Zener clamp on VCC and latch immunity on all inputs and outputs are also featured.

More information is available on the International Rectifier website at http://www.irf.com/whats-new/nr130718.html

Availability and Pricing

Pricing for the IRS2505L begins at US $0.25 each in quantities of 10,000-units. Production quantities are available immediately. The devices are lead free and RoHS compliant. Prices are subject to change.

About International Rectifier

International Rectifier (NYS: IRF) is a world leader in power management technology. IR's analog- and mixed-signal ICs, advanced circuit devices, integrated power systems, and components enable high-performance computing and reduce energy waste from motors, the world's single largest consumer of electricity. Leading manufacturers of computers, energy-efficient appliances, lighting, automobiles, satellites, aircraft, and defense systems rely on IR's power-management benchmarks to power their next generation products. For more information, go to www.irf.com.

Trademark Notice

µPFC™ is a trademark of International Rectifier Corporation and IR® is a registered trademark of International Rectifier Corporation. All other product names noted herein may be trademarks of their respective holders.



International Rectifier
Sian Cummins, 310-252-7148
scummin1@irf.com

KEYWORDS:   United States  North America  California

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