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