|June 7, 2004
Stan Michelson, Focus Communications
New Lambda NV-350 Configurable Power Supply Provides Class-Leading Power Density
SAN DIEGO, CA (June 7, 2004) - Lambda today announced the NV-350, a 350-watt configurable AC-DC power supply
that combines class-leading power density, high efficiency, low noise and excellent EMC performance in a
very compact design. At 6.6 watts per cubic inch, the NV-350 offers designers unsurpassed performance for
space-critical applications in instrumentation, broadcast, medical and high-end IT systems.
A member of the new NV-Power series, the NV-350 employs Lambda's patented multiple resonant topology (MRT),
which uniquely uses synchronous rectification to achieve efficiencies of up to 90%. By reducing power losses
significantly, Lambda has not compromised size for power. The 350-watt power supply comes in a very compact
1.6- x 3.75- x 10.9-inch package – compatible with 1U enclosures as well as 2U and 3U card frames – and, at
just over 28 ounces, weighs 20% less than competitive supplies.
The NV-350 is fully configurable and can provide between one and six outputs, with voltages ranging from 3.3
to 32 volts and currents up to 40 amps; as many as three single- or dual-output modules can be selected. The
transformers use a multiple-layer printed circuit board for the primary and a flexible circuit as secondary,
a design that yields a high throughput of power and allows Lambda to use rapid configuring techniques in
manufacturing the supply.
The NV-350 has no minimum load requirements and is available with a high-power standby output rated at 5
volts, 2 amps or 12 volts, 1 amp. Module good and inhibit signals come standard; AC good, global good and
remote on/off are optional.
Lower heat dissipation, with the power components more evenly distributed around the design, means the
NV-350 has no need for heatsinks, and its open construction allows easy cooling. Moreover, a low airflow
requirement enables the power supply to use a smaller, quieter fan; system air-cooled versions are also
Because of its patented soft-switch MRT design, the NV-350 has inherently low emissions, aided by the use
of silicon carbide Schottky diodes. Unique for this class of product, it has EN60601 medical approval
combined with EN55022 Level B conducted emissions; it also has EN61010 and EN60950 approvals.
In response to customer feedback expressing a desire for ease of use, Lambda has provided NV-350 customers
with a choice of screw or IEC input connectors and output screw terminals carefully designed to avoid cable
The NV-350 will be available in June, priced at $400 per unit (with four output configurations) in medium
volumes. More information is available at Lambda's Web site, www.lambdapower.com.
For more than 50 years, Lambda has been a leading provider of standard and custom power supply solutions.
The company's broad range of products power industrial, telecommunications, data communications, medical,
and test-and-measurement applications worldwide. Lambda's corporate headquarters is at 3055 Del Sol Blvd.,
San Diego, Calif., 92154; telephone 800-LAMBDA4 (toll free) or 619-575-4400; fax 619-429-1011.
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