CamSemi targets constant-power C2283 PSS flyback controller at low-cost networking adapters


Supports ITU-T G.991.2 dying-gasp and EC 1275/2008 tier-two standby-power standards requirements

Click image to enlarge: CamSemi's C2283 high-performance primary-side-sensing flyback controller offers a unique constant-power mode.

CamSemi is focusing on the fast-growing networking-products power-supply market with the launch of the C2283 - a high-performance PSS (primary-side sensing) flyback controller with a unique CP (constant-power) mode. The C2283 offers fast load pull-up of electronic products with high input capacitance, such as modems and other networking devices, but is also well suited for set-top boxes and other high-volume, energy-efficient universal-input adapter applications rated above 8 W. CamSemi's new CP PSS controller will allow designers to right size their networking-adapter power-supply designs, while enjoying system costs and component counts lower than today's competitive approaches. Previously, networking-adapter designers had to over specify adapters by adding extra or higher-rated components to ensure their designs were compatible with the dying gasp requirement in the ITU-T G.991.2 standard. The C2283 also offers excellent light load efficiency to help manufacturers more easily meet the challenging standby-power requirements of EC 1275/2008 tier two. The C2283 delivers many of the same key design benefits as the company's existing PSS controller families. These include accurate voltage regulation across the entire load range allowing use of lower cost components elsewhere in the system, quasi-resonant switching to improve efficiency and reduce EMI, and full-featured protection. The C2283 is available in SOT23-6 packages and samples are available now. A product datasheet can be downloaded from the design support section of the company's website with more detailed information and support available from CamSemi or one of the company's distributors. CamSemi