San Jose, Calif.—Power Integrations' reference design kit for power-over-Ethernet (PoE) powered devices (PDs) speeds time-to-market.
"Our new PoE reference design kit offers an excellent solution for reducing time-to-market of PoE PDs," said Andrew Smith, DC/DC product marketing manager. "The circuit design is fully compliant with the IEEE 802.3af standard for PoE PDs, and early adopters are finding that it offers a highly effective, low-cost solution to jumpstart their network appliance designs."
The reference design kit, which contains a 3.3-volt, 2-amp Class 2 power supply, samples of the company's DPA-Switch family and design software and a comprehensive engineering report including a circuit description and schematic, test results and transformer design information, supports the design of all current classes of PoE PDs (Class 0 to Class 3) and a power range up to 12.95 watts. A designer changes the class of a design by simply replacing a single resistor. The design carries out PoE signature and classification functions, while the DPA-Switch device manages all the primary DC/DC switching and control functions. The complete circuit requires only 16 components and costs about one-third less than designs based on integrated PoE interface/controller ICs.
This circuit design has been tested by the University of New Hampshire Interoperability Consortium (UNH-IOC) using a comprehensive suite of power sending equipment (PSE). The UNH-IOC test reports, along with additional information on Power Integrations' PoE offerings and complete information on the DPA-Switch family of ICs, can be found by clicking here.
The PoE Class 2 PD reference design kit (DAK-86) is priced at $100.
Power Integrations, 1-408-414-9200,