Enpirion DC-DC Converter Quiets the Competition with its Low Noise

Fully-integrated power device ideal for low-power mobile
applications
BRIDGEWATER, N.J.--(Business Wire)--
Enpirion today announced the availability of a new 600 mA
synchronous buck converter with an integrated inductor, delivering
extremely low output ripple in a tiny 3mm x 3mm x 1.1mm QFN package.
The complete solution requires only 2 tiny MLCC capacitors for a
solution footprint of only 22 sq mm. Enpirion's low noise devices are
critical for today's RF, analog, and high-speed digital applications
where switcher noise can limit data throughput and cause failure in
spectral compliance.

As with all of Enpirion's switch-mode converters, the new EP5368QI
part features a proprietary low loss integrated inductor, PWM
controller, MOSFETS and compensation network. This high level of
integration greatly simplifies design, contains noise, and reduces
part count and size. The device has a 4 MHz switching frequency, and
achieves up to 94% efficiency. It provides 600 mA of continuous output
current over the industrial temperature range, and 700 mA over the
commercial temperature range.

Highlights of the EP5368QI include:

-- Low Noise - This device offers very low radiated noise (EMI),
low conducted noise, and low output ripple. Enpirion's
unprecedented level of integration localizes the high
frequency noise associated with switch-mode DC-DC converters,
keeping it inside the package and not on the customer's PCB.
The converter also uses voltage mode control to achieve high
noise immunity and superb load matching to today's sub-90nm
semiconductor process technology.

-- Small Footprint - The EP5368QI requires only two small MLCC
capacitors for a complete solution, with a total footprint of
just 22 sq mm. This part has shrunk from its first generation,
which had a 32 sq mm solution footprint. Enpirion's products
are known for offering up to 70% reduction in DC-DC converter
footprint over competing solutions.

-- Ease of Design - Integration of the inductor makes switch-mode
converter design an almost turnkey experience. Further, the
part uses a 3-pin voltage selector to choose one of seven
preset common output voltages or an external resistor divider.
The overall design experience is nearly as easy as that of
designing in a linear regulator, with the efficiency of a
switcher.

"Our team's expertise in the field of high-frequency converter
design dates back more than 20 years, and this experience has allowed
us to develop a switch-mode converter with the lowest noise and
smallest footprint in its class," stated Ashraf Lotfi, Enpirion's
President and CTO. "Others have tried without success, making our
product stand alone in the low-noise, small footprint arena."

Enpirion's newest 600 mA DC-DC converter is currently designed
into a number of platforms. It is well-suited for a broad range of
mobile and wireless broadband applications, including (but not limited
to) smart phones, wireless data cards, portable gaming devices,
navigation systems, personal media players, and advanced mobile
processors.

Pricing & Availability

The EP5368QI is available now, and pricing is set at $0.98 for
quantities of 10,000 parts.

About Enpirion

Enpirion is the leading developer of Power Systems on Silicon,
delivering breakthrough power density and ease of use. Enpirion
utilizes a fabless manufacturing model and partners with the
industry's leading assembly and test houses to provide the highest
degree of quality and reliability. Enpirion's products are designed
into a broad range of demanding applications including embedded
computing, set-top boxes, consumer electronics, telecommunications
equipment, cellular handsets and more. For additional information
about Enpirion and its award-winning products, please visit
www.enpirion.com.

Note to Editors: Additional translations, including Chinese and
Japanese, are available upon request.

Rainier Corporation (for Enpirion)
Candice Perodeau, 508-475-0025 x112
EnpirionPR@rainierco.com

Copyright Business Wire 2008