STMicroelectronics said on the 14th it released the L4983 controller, which can implement a continuous conduction mode (CCM) power factor correction (PFC) circuit with only minimal external components.
The L4983 integrates a proprietary multiplier emulator and distortion-optimization circuitry to support power supplies from several hundred watts up to several kilowatts. It can be used in appliances, industrial and medical power supplies, high-power lighting, and servers and PCs, and features three power-saving modes that meet global efficiency standards such as U.S. Energy Star and the EU Ecodesign Directive.
It also includes a variety of protection features, such as overvoltage and overcurrent protection, inductor saturation detection, and soft start, to improve system reliability. ST also provides a 350W-class demo board (EVL4983-350W) to help speed development.
Depending on switching frequency, the product comes in two versions, the L4983A (65kHz) and L4983B (130kHz), and is produced in an SO-8 package. Pricing starts at $0.80 each for orders of 1,000 units.