Micrel Rolls Out New High Voltage Synchronous Buck Controller With Low EMI Option

SAN JOSE, California, October 30 /PRNewswire/ --

Micrel Inc., (Nasdaq: MCRL), an industry leader in analog, high bandwidth
communications and Ethernet IC solutions, today introduced the MIC2130/1, 
a new series of high voltage synchronous buck controller ICs offering 
a frequency dithering feature that minimizes EMI and adheres to global EMC
standards. Targeted at the industrial, communication, automotive and high-end
consumer markets, the solutions are ideal for high voltage and high
efficiency point of load systems, including printer head drivers, gaming
applications and mobile entertainment systems. The ICs are currently
available in volume quantities, with pricing starting at US$1.63 for 
1K quantities.

"Industrial, automotive and medical applications have rigorous quality
and performance specifications that frequently require the lowest possible
EMI and tolerance to high input voltages," noted Ralf Muenster, Micrel's
marketing director for power products. "In order to meet global EMC
specifications, Micrel's MIC2131 features a +/-12 percent switching frequency
dithering to produce a spread spectrum thereby lowering the EMI peaks. In
addition, the synchronous operation gives designers the highest possible
efficiency with the best performance for a variety of FETs."

The MIC2130/1 operates over a wide input voltage range of 8 to 40V and
offers adjustable output voltages down to 0.7V. The device features a 150KHz
frequency option, available now, which allows optimization for best
efficiency or size. The solution also offers internal drivers for output
currents up to 15A and an adaptive gate drive allows efficiencies of more
than 95 percent. The ICs provide better than 2 percent output voltage
accuracy over -40C-deg to +125C-deg and excellent line and load regulation
thanks to a fast hysteretic control loop during transients. The MIC2131 has
advanced current limit protection which allows for increased current when
powering highly capacitive loads quickly. The ICs are available in a 150kHz,
16-pin e-pad TSSOP option today. The 400Khz frequency option and the
MLF(R)-16 4mm x 4mm package option will both be available in the first
quarter of 2008.

About Micrel, Inc.

Micrel Inc., is a leading global manufacturer of IC solutions for the
worldwide analog, Ethernet and high bandwidth markets. The Company's products
include advanced mixed-signal, analog and power semiconductors; high
performance communication, clock management, Ethernet switch and physical
layer transceiver ICs. Company customers include leading manufacturers of
enterprise, consumer, industrial, mobile, telecommunications, automotive, and
computer products. Corporation headquarters and state-of-the-art wafer
fabrication facilities are located in San Jose, CA, with regional sales and
support offices and advanced technology design centers situated throughout
the Americas, Europe and Asia. In addition, the Company maintains an
extensive network of distributors and reps worldwide.
Web: http://www.micrel.com.

Note: MLF is a registered trademark of Amkor Technology.

Web site: http://www.micrel.com