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CUI Intros 60A Digital Point-of-Load Modules
Digital point-of-load module.
Tualatin, OR — CUI Inc. has introduced a new family of digital point of load DC-DC modules that reportedly set performance benchmarks in efficiency, power density, and transient response to address the rapidly-rising power challenges in distributed power architectures. The NDM3ZS-60 is a non-isolated module outputting 60A in ultra low-profile vertical and horizontal packages. The series is the first non-isolated design to incorporate CUI's patented Solus' Power Topology which integrates a conventional buck converter into a SEPIC converter to form a SEPIC-fed buck converter; a single stage topology with one magnetic element, one control switch and two commutation switches that are optimally controlled by pulse-width modulation (PWM). With lower voltage and current stresses in the topology coupled with an inherent gate charge extraction (GCE) process, the topology is able to reduce switching turn-on losses by 75 percent and switching turn-off losses by 99 percent on the control FET when compared to a conventional buck converter. The Solus Topology further increases total efficiency by distributing the energy delivery into multiple paths, reducing circuit conduction losses by nearly 50 percent.

The new topology allows the NDM3ZS-60 to hit the performance metrics quickly which is imperative in today's advanced designs. Efficiency peaks at 91.3 percent at 12Vdc in to 1.0Vdc out, 50 percent load. Efficiency remains high up to full load at 88.5 percent. Transient response is also greatly improved with the SEPIC-fed buck. At 12Vdc in to 1Vdc out with a 30A load step (from 15A to 45A) and a 10A/fs slew rate, peak voltage is a mere 16mV with typical external capacitance required.

The NDM3ZS-60 series is available with an input range of 7.2~14VDC and a programmable output range of 0.6~1.5VDC. Additional features include voltage sequencing, voltage tracking, synchronization and phase spreading, programmable soft start and stop, as well as a host of monitoring capabilities. All features are dynamically programmable using PMBus commands or through the company's simple, easy to use Novum ACE GUI.


Contact: CUI, Inc., 20050 SW 112th Ave., Tualatin, OR 97062 800-275-4899 or 503-612-2300 fax: 503-612-2383 E-mail: sales@cui.com Web:
http://www.cui.com

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