Cirrus Logic digital PFC ICs deliver performance, price benefits

cirruslogicexlcoreAustin, Tex. — Cirrus Logic Inc. has claimed the industry’s first digital power factor correction (PFC) controller ICs that the company says 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, according to the company.

Both ICs are priced on par with analog PFCs, while also lowering the overall bill of materials by up to $0.25, according to Cirrus Logic.

Featuring the new EXL Core architecture, Cirrus Logic says the CS1500 and CS1600 devices have the advantage over analog products by being able to intelligently solve increasingly complex power management challenges. Through its digital noise shaping technology, both the CS1500 and CS1600 enable smaller EMI filters, which cut the need for additional high-priced components and circuitry.

In addition, these digital ICs improve energy efficiency across all load conditions, with a performance advantage in light load conditions, and simplify system designs by reducing external component count by more than 30 percent, said Cirrus Logic.

For more information on global regulations and power consumption challenges within applications, see the Cirrus Logic White Paper: The Digital Imperative: The Rising Wave in Power Factor Correction (PFC) Techniques.

The CS1500 and CS1600 are digitally controlled, discontinuous conduction mode (DCM), active PFC 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.

Availability: The CS1500 and CS1600 are available in an 8-pin SOIC package. They are currently available through Digi-Key and Mouser.
Pricing: $.30 in quantities of 1,000,000.