Power Electronics

Digital Power Factor Correction ICs Surpass Analog PFCs on Performance, Price

Kicking off a new line of products for growing energy-related markets, Cirrus Logic Inc. unveiled the industry’s first digital power factor correction (PFC) controller ICs that surpass analog PFCs on performance and price. The CS1500 and CS1600 offer power supply and lighting ballast system designers improved performance and simplified designs compared to legacy analog PFC products. Both ICs are priced on par with analog PFCs, while also lowering the overall bill of materials by up to $0.25.

Featuring the new EXL Core architecture, with its currently 53 patented and patent-pending digital algorithm technologies, the CS1500 and CS1600 have the advantage over analog products of being able to intelligently solve increasingly complex power management challenges. Through its patent-pending digital noise shaping technology, both the CS1500 and CS1600 enable reduced-sized EMI filters, which cut the need for additional high-priced components and circuitry. Additionally, these digital ICs improve energy efficiency across all load conditions, with a distinct performance advantage in light load conditions, and simplify system designs by reducing external component count by more than 30 percent.

As global regulatory agencies drive improved efficiency requirements in consumer products, the total PFC market is anticipated to expand from 1.2 billion units in 2009 to 2.4 billion units in 2013, according to Ryan Sanderson, senior research analyst, IMS Research.

The CS1500 and CS1600 are digitally controlled, discontinuous conduction mode (DCM), active power factor correction ICs intended for use in power supplies rated up to 300 watts. The CS1500 is designed to address power supplies such as laptop adapters, digital TVs and PC power, while the CS1600 targets electronic lighting ballasts.

The CS1500 and CS1600, which are available in an 8-pin SOIC package, are available today and priced at $.30 in quantities of 1,000,000.

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