High Power Chassis MountDc-Dc Converters

© 2012 CUI Inc

Introduction

Content: 11 pages

Learning Time: 5 minutes

Purpose

To provide an overview of CUI’s high power chassis mount dc-dc converters, including available options, features, and protections

Objectives

Explain the growing need for 4:1 input rangesin dc-dc converters

Summarize the range of products in CUI’s high power chassis mount series

Describe the series’ key features

© 2012 CUI Inc

Chassis Mount Dc-Dc Converters

Packaged in a rugged aluminum package with integrated heat sink for improved thermal performance

High power output ranging from 50 W to 600 W

Chassis mount design allows forconvenient installation

© 2012 CUI Inc

The Need for Wider Input Ranges

In many applications the input voltage supply is unstable and can vary over a wide range

Often a typical 2:1 input range is not wide enough

The VHK series and VFK400W series offer a 4:1 input voltage range to address widely fluctuating input voltages

© 2012 CUI Inc

Series Summary

Series Power(w)

Input voltage(Vdc)

Output Voltages(Vdc)

Size(in)

VHK50W 50 9~36, 18~75 3.3, 5, 12, 15, 24, 28, 48 4.25 x 4.0 x 1.5

VHK75W 75 9~36, 18~75 3.3, 5, 12, 15, 24, 28, 48 4.25 x 4.0 x 1.5

VHK100W 100 9~36, 18~75 3.3, 5, 12, 15, 24, 28, 48 4.25 x 4.0 x 1.5

VHK150W 150 9~36, 18~75 12, 15, 24, 48 4.25 x 4.0 x 1.5

VHK200W 200 10~36, 18~75 12, 15, 24, 28, 484.25 x 4.0 x 1.5

VFK400W 400 10~36, 18~75 12, 24, 48 7.84 x 4.99 x 1.54

VFK600 600 18~36, 36~75 12, 24, 28, 32, 48 7.84 x 4.99 x 1.54

© 2012 CUI Inc

Features

Output trimOutput voltages may be trimmed to +/- 10% with an external potentiometer.

© 2012 CUI Inc

Remote on/off control

The series’ output can be enabled or disabled through the REM (on/off) pin. Standard models default to positive logic although negative logic versions are also available from CUI.

Features continued

Logic Positive Negative

SW Closed (VREM<0.8V)

Output off Output on

SW Open (VREM>2.4V)

Output on Output off

© 2012 CUI Inc

Features continued

Remote sense

The converter can compensate up to 0.5V of voltage drop through remote sense terminals.

© 2012 CUI Inc

Over current protection

Short circuit protection

Over voltage protection

Over temperature protection

Protections

© 2012 CUI Inc

Convenient Installation

Building a dedicated circuit board that includes the power system may not be feasible in certain systems

The encapsulated aluminum case and terminal block connections of the VHK/VFK series allow for simple mounting and wiring

© 2012 CUI Inc

Applications

The VHK/VFK series is perfect for a wide range of applications

TransportationForklift, bus/automotive, marine

CommunicationsBase stations, mesh networks

IndustrialOil drilling, construction, automation equipment

© 2012 CUI Inc

Summary

The VHK and VFK series are a family of high power chassis mount dc-dc converters with integrated heat sinks

Models range from 50 to 600 W in different input and output voltage combinations

Learn More

View CUI’s chassis mount dc-dc converters

View CUI’s full Power product portfolio

www.cui.com