Green Design

Power Factor Correction ICs

International Rectifier (El Segundo, CA) has introduced the IR115x family of µPFC™ power factor correction (PFC) ICs for a wide variety of AC-DC applications including lighting, LCD/PDP TV and game console Switch Mode Power Supplies (SMPS), fans, air conditioners, and uninterruptible power supplies (UPS) ranging from 300 W to 8 kW.

The IR115x ICs, utilizing IR’s One Cycle Control (OCC) technology, offer high power factor (PF), low total harmonic distortion (THD) and excellent DC Bus regulation while enabling drastic reduction in component count, PCB area and design time compared to traditional solutions. The ICs are designed to operate in continuous conduction mode Boost PFC converters with average current mode control over 85-264 VAC input line voltage range.

The new µPFC™ ICs offer advanced system-enabling and protective features including dedicated pin for over-voltage protection, cycle by cycle peak current limitation, open loop protection, VCC UVLO and programmable soft-start. The user initiated micropower startup/sleep-mode enables compliance with standby power requirements mandated by regulations such as Energy Star, Green Power, and Blue Angel. The IR1152S and IR1153S also feature brown-out protection.

(International Rectifier)