© 2013 CUI Inc

Novum® Intermediate Bus

Dc-Dc Converters

© 2013 CUI Inc

IntroductionPurpose

To provide an overview of CUI’s advanced Novum® intermediate bus dc-dc converter series featuring an optional digital interface

Objectives Highlight the need for an intermediate bus architecture

Introduce the NEB and NQB intermediate bus series

Describe the series’ key features and specifications

Highlight the optional digital interface

List target applications

Content: 12 pages

Learning Time: 5 minutes

© 2013 CUI Inc

Data usage is skyrocketing globally, placing strains on existing networking equipment.

Server farms and data centers to drive the cloud are coming under increased environmental scrutiny.

Efficiency, thermal performance, and telemetry are becoming increasingly important factors in next generation networking applications.

An interconnected world creates hardware challenges

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Intermediate Bus Architecture

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CUI’s Intermediate Bus Series

Highlights

96.4% typical efficiency at half load

Fully regulated

2250 V dc isolation

+/- 2% output voltage tolerance

UL 60950-1 approved Pin and function compatible with

Ericsson Power Modules BMR453,BMR 454, BMR456 and BMR457 series

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5-pin industry standard package with or withoutdigital PMBus interface.

Baseplate for improved thermal performance. Droop load sharing with 10% current share accuracy.

CUI’s Intermediate Bus Series

Options

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A 32-bit digital controller with energy-optimizing firmware flattens the efficiency curve from low to high load to better address real world loading conditions.

Flattening the Efficiency Curve

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Industry Standard Footprint

5-Pin industry standard packages address the needs of analog distributed bus power systems.

Provides a high efficiency drop-in solution for existing applications utilizing 1/8 brick and 1/4 brick intermediate bus converters.

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Optional Digital Interface

Features include:

Configurable start/stop

Configurable precision delay and ramp-up

Voltage/current/temperature monitoring

Configurable output voltage

Configurable fault response

The optional PMBus digital interface adds an unprecedented level of intelligence.

© 2013 CUI Inc

NEB 1/8 Brick Series

Series Power Input Range Preset Output Voltage

Output Voltage Range

Digital Interface

NEB-264D 264 W 36~75 V dc 12 V dc 6.9~13.2 V dc(user-configured)

Yes

NEB-264N 264 W 36~75 V dc 12 V dc 6.9~13.2 V dc(factory-configured)

No

NEB-300D 300 W 40~60 V dc 12 V dc 6.9~13.2 V dc(user-configured)

Yes

NEB-300N 300 W 40~60 V dc 12 V dc 6.9~13.2 V dc(factory-configured)

No

© 2013 CUI Inc

NQB 1/4 Brick Series

Series Power Input Range Preset Output Voltage

Output Voltage Range Digital Interface

NQB-420D 420 W 36~75 V dc 12 V dc 4.0~13.2 V dc(user-configured)

Yes

NQB-420N 420 W 36~75 V dc 12 V dc 4.0~13.2 V dc(factory-configured)

No

NQB-468D 468 W 40~60 V dc 12 V dc 4.0~13.2 V dc(user-configured)

Yes

NQB-468N 468 W 40~60 V dc 12 V dc 4.0~13.2 V dc(factory-configured)

No

© 2013 CUI Inc

Applications

Enterprise servers

Mainframes

Storage equipment

Telecom base stations

Video Switching

Access networks

Network switches

The NEB and NQB series are ideal for a wide range of Information and Communication Technology (ICT) equipment:

© 2013 CUI Inc

Summary

The need to increase board-level efficiency in networking applications continues to increase.

CUI’s series of advanced intermediate bus converters are designed to optimize efficiency across a broader range of loading conditions.

A digital interface increases flexibility for applications implementing PMBus.

Learn More

View CUI’s Novum intermediate bus dc-dc converters

View CUI’s Novum Advanced Power line

© 2013 CUI Inc

www.cui.com