Power Integrations Introduces Reference Design Kit for Multi-class Power-over-Ethernet Powered Devices; Design Kit Reduces Time, Cost of PoE PD Development

Power Integrations (Nasdaq:POWI), the leader in
high-voltage analog integrated circuits for power conversion, today
introduced a new reference design kit for Power-over-Ethernet (PoE)
Powered Devices (PDs). The rapid growth of the PoE PD market --
expanding at a compounded annual growth rate of almost 36 percent
(Venture Development Corporation, June 2005) -- is being driven by the
wide adoption of network appliances, wireless LANs and Voice over
Internet Protocol (VoIP) telephones. Power Integrations has addressed
the needs of this high-growth market by providing a reference design
to help speed prototyping and delivery of standards-compliant PoE PDs.
The reference design combines a multi-class PoE interface and DC-DC
switching circuit built around the company's monolithic DPA-Switch(R)
family of ICs.
"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 for Power Integrations. "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 supports the design of all current
classes of PoE PDs (Class 0 to Class 3) and a power range up to 12.95
W. A designer can change the class of a design by replacing a single
resistor. The design carries out PoE signature and classification
functions, while the integrated 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.
The PI circuit design was tested by the University of New
Hampshire Interoperability Consortium (UNH-IOC) using a comprehensive
suite of power sending equipment (PSE), and was shown to meet IEEE
802.3af requirements in all cases. Copies of 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
on the Power Integrations website at www.powerint.com/poe.htm.

Available Today

The PoE Class 2 PD Reference Design Kit (DAK-86) is available
today from PI and its authorized distributors. Pricing is USD 100. The
design kit contains a 3.3 V, 2 A Class 2 power supply, samples of the
DPA-Switch family and design software plus a comprehensive engineering
report including a circuit description and schematic, test results and
transformer design information.

About Power Integrations

Power Integrations, Inc. is the leader in high-voltage analog
integrated circuits for power conversion. The company's breakthrough
technology enables compact, energy-efficient power supplies in a wide
range of AC-DC and DC-DC applications. The company's EcoSmart(R)
energy-efficiency technology, which dramatically reduces energy waste,
has saved consumers and businesses around the world more than an
estimated USD 1.6 billion on their electricity bills since its
introduction in 1998. For more information, visit the Power
Integrations website at www.powerint.com.

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