Saturday, June 23, 2018
Publication Date: 10/1/2008
Archive >  October 2008 Issue >  New Products > 

Lambda Intros Digital Power Supplies
Digital power supply.
San Diego, CA — Lambda has added a new range of digitally controlled modules to its innovative NV-Power family of configurable AC-DC power supplies. The new modules enable increased power output of up to 1450W peak rating for 10 seconds. The modules enable the company to satisfy the increasing demand for low-profile configurable power solutions from 350W to above 1000W.

The power modules are intended for use in broadcast, instrumentation, medical equipment, ATE, automation, routers, servers and security networks.

The new digitally controlled modules incorporate many innovative design features including a new integrated magnetics transformer that allows for small size and increased efficiency. The digital control allows customization based on the application's requirements (such as modified current-limit or start-up characteristics). In addition, the input to output isolation meets the 4kVAC reinforced requirements for medical use.

NV-Power uses an 8-bit microcontroller to handle housekeeping routines, replacing the array of comparators, op amps and other discrete components used in less integrated designs. This results in a 50 percent parts count reduction which in turn allows 40 percent more board space for power components. With the very high peak power rating, designers can realize power densities of up to 19W/in.3. All units operate with a input range of 90 to 264VAC.

The NV-350 series provides up to 350W of output power with <180VAC input, and up to 660W continuous (740W peak for 10 seconds) with >180VAC. Up to six user-selectable outputs can be provided in a 1.6 x 3.75 x 10.8-in. package.

While the NV-700 series provides up to 700W of output power with <150VAC input, and up to 1150W continuous (1450W peak for 10 seconds) with >150VAC, up to eight user-selectable outputs can be provided in a 1.6 x 4.92 x 10.8-in. package.

The company's Multi Resonant Topology (MRT) and other EMC-improving design features have resulted in meeting Curve B EMC performance with earth leakage current less than 300µA at 264VAC, 63Hz (meeting the requirement for IEC/EN/UL60601-1).

Available with an extensive range of output modules and options, it is possible to achieve a wide range of output voltage and current combinations. All outputs are fully isolated, no minimum load is required and each module has output-good and inhibit control signals.

Of particular note, the new digitally controlled single-output "C" module is three-slots wide and available with 12V, 15V and 24V outputs offering as much as 400W continuous and up to 600W peak output power for up to 10 seconds.

Cooling is by either customer-provided forced air or with a low-noise temperature controlled fan. Outputs covering the 3.2V to 64V range are available as well as 5V/2A and 12V/1A "ATX-compatible" standby outputs. The NV-Power uses Multiple Efficiency Gain (MEG) technology to produce efficiency of up to 90 percent depending upon the configuration.

All supplies meet EN55011/55022 Curve B EMC, are EN61000-3-2 compliant (PFC) and are approved to IEC/EN/UL60950-1 for general purpose applications as well as IEC/EN/UL60601-1 for medical applications and IEC/EN61010-1 for laboratory and process control applications. In addition, the units carry the CE Mark, and are fully RoHS-compliant.

Contact: Lambda Americas, Inc., 3055 Del Sol Blvd., San Diego, CA 92154 800-526-2324 or 619-575-4400 fax: 619-429-1011 Web:

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