We’ve got the
Power.
HIGH POWER WHITE LIGHT
CONSTANT CURRENT
LED-DRIVERS
DROP IN REPLACEMENT FOR
3-PIN REGULATORS (78 SERIES)
SWITCHING REGULATORS
EFFICIENCIES UP TO
97%
NEW!
100% POWER. NO DERATING.
HIGH EFFICIENCY HIGH TEMP.
DC-DC POWER MODULES
MICROSIZE PCB MOUNT
SAFETY APPROVED
AC-DC MODULES
Application Notes
2009
100% DC-DC Power. No derating.
POWERLINEPLUS
From -45°C up to 100°C Full Load Operating Temperature
Built-in EN55022/FCC Class B EMC Filter
Up to 3kVDC Isolation
Compact Size, Standard Pinouts
Efficiency above 90%
Single & Dual Outputs
2:1and 4:1 Input Voltage Ranges
20W, 30W, 40W or 50W DC-DC Power Packages
The POWERLINE PLUS uses ICE Technology. A combination of techniques
to minimise internal heat dissipation and maximise the heat transfer to
ambient to create a new converter series which offers high end performance
at a price which is significantly lower than conventional specialist converters.
RECOM - Green high-efficiency power solutions.
SAVE ENERGY. NOW.
Application Notes
CHOOSING THE RIGHT CONVERTER: A GUIDE for DC/DC Converters
Step 1:
Do you need Isolation? (An isolated converter has outputs that are floating and not
connected to the inputs i.e. they are galvanically isolated)
No isolation needed: Check our Innoline parts first (R-78 series, R-5xxx, R-6xxx and
R-7xxx series)
Isolation needed: decide whether you need 1kVDC/1 sec (standard) or 1.6VDC/
1 sec, 2kVDC/1 sec, 3kVDC/1 sec, 4kVDC/1 sec, 5.2kVDC/1 sec or 6kVDC/1 sec.
Step 2:
Decide on the output voltage and number of outputs: single, dual bipolar (+/-), dual
isolated or triple.
It is also important to decide whether the output voltage needs to be regulated or
unregulated.
Unregulated converters are offered standard without short circuit protection or
optionally with short circuit protection (option /P)
All Series are available with single outputs.
Please note that a dual output converter can be used as a single output by leaving
the common pin unconnected i.e. +/-5V = 10V, +/-12V = 24V, +/-15V = 30V, etc.
Step 3:
Decide on the output current. The output voltage times the output current gives the
output power of the converter in Watts.
DC/DC converters are designed to run at full load, so only round up the power if a
suitable converter is not available.
e.g. 5V @ 150mA = 0.75W = 1W converter.
e.g. +/-15V @ +/-1A = 30W = 30W converter.
Decide on the input voltage. Standard input voltage ranges are:
3.3, 5, 9, 12, 15, and 24VDC with +/-10% tolerance
4.5 ~ 9V, 9 ~ 18V, 18 ~ 36V and 36 ~ 72VDC with 2:1 input voltage range
9 ~ 36V and 18 ~ 72VDC with 4:1 input voltage range.
Step 5:
Decide on the case style and pin-out. Many Recom series are available in either
through hole or surface mount styles and with several pin-out options, including
Remote On/Off Control.
Use either the
Selection
guide or
Contents
guide at the start of each section to
find the most appropriate converter.
Step 4:
Step 6:
REMEMBER: THERE IS AN INTERACTIVE SELECTION GUIDE ON OUR WEBSITES
Go to
WWW.RECOM-INTERNATIONAL.COM
then click on
PRODUCT SEARCH
Go to
WWW.RECOM-POWER.COM
then click on
PRODUCT SEARCH: SPEC BY STEP
www.recom-international.com
2009
A-1
Application Notes
SPECIFICATION CHECKLIST
Use this checklist to help you define your specification. If you can’t find a converter that fulfils your
needs then call us, fax us, e-mail us or use our Web Sample Enquiry link and we will find the best
match for you.
1.
2.
Non-Isolated
Single Output
Isolation Required
_____kVDC
or
____kVAC
Dual Bipolar Output
Other:
Output Voltages (V)
_____ /______/______
Output Currents (A)
_____/______/______
3.
4.
5.
6.
7.
8.
9.
Total Output Power (V x A)
_________________
Regulated
Unregulated
No
Yes
Yes
Yes
Short Circuit Protection:
Remote Control Pin:
Output Voltage Trim:
No
No
Input Voltage: minimum
______
maximum
______
Mounting Style:
Single-In-Line Pins
Dual-In-Line Pins
Standard Brick
Case Style:
Through Hole
SIP4
DIP8
1” x 1”
SIP6
DIP14
1” x 2”
SMD
SIP7
DIP16
1.6” x 2”
SIP8
SIP12
DIP24 - Pinout? A_B_C_
2” x 2”
Open Frame
EN 60601-1
UL 60950-1
Metal Case
None
Plastic Case
EN 60950-1
10.
11.
12.
13.
Certifications Required:
Operating Temperature Range: minimum
______
maximum
______
Heatsink required :
No
Yes
Other Requirements:________________________________________
REMEMBER: THERE IS AN INTERACTIVE SELECTION GUIDE ON OUR WEBSITES
Go to
WWW.RECOM-INTERNATIONAL.COM
then click on
PRODUCT SEARCH
Go to
WWW.RECOM-POWER.COM
then click on
PRODUCT SEARCH: SPEC BY STEP
A-2
2009
www.recom-electronic.com
Application Notes
Contents
ECONOLINE (General Apps.)
●
No Load Over Voltage Lock-Out
Long Distance Supply Lines
LCD Display Bias
Pre- and Post Regulation
EIA-232 Interface
3V/5V Logic Mixed Supply Rails
Isolated Data Acquisition System
●
POWERLINE DC-DC
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
Terminology
Input Range
Load Regulation
Line Voltage Regulation
Output Voltage Accuracy
Input and Output Ripple and Noise
Input to Output Isolation
Insulation Resistance
Efficiency at FulI Load
Temperature Drift
Switching Frequency
No Load Power Consumption
Isolation Capacitance
Mean Time Between Failure (MTBF)
Noise
Operating Temperature Range
Calculation of Heatsinks
●
●
EMC Filter Suggestion
General Test Set-Up
Input Voltage Range
PI Filter
Output Voltage Accuracy
Voltage Balance
Line Regulations
Load Regulation
Efficiency
Switching Frequency
Output Ripple and Noise
Output Ripple and Noise (continued)
Transient Recovery Time
Current Limiting
Fold Back Current Limiting
Isolation
Break-Down Voltage
Temperature Coefficient
Ambient Temperature
Operating Temperature Range
Storage Temperature Range
Output Voltage Trimming
Heat Sinks
EMC Considerations
Power Supply Considerations
Interpretation of DC-DC Converter EMC Data
Conducted and Radiated Emissions
Line Impedance Stabilisation Network (LISN)
Shielding
Line Spectra of DC-DC Converters
Temperature Performance of DC-DC Converters
Transfer Moulded (SMD) DC-DC Converters
Production Guideline Application Note
Component Materials
Component Placement
Component Alignment
Solder Pad Design
Solder Reflow Profile
Recommended Solder Reflow Profile
Adhesive Requirements
Adhesive Placement
Cleaning
●
Isolation
Isolation Voltage vs. Rated Working Voltage
●
●
●
●
●
Isolation mode in IGBT Driver Circuits
Connecting DC-DC Converters in Series
Connecting DC-DC Converters in Parallel
Chaining DC-DC Converters
Filtering
Output Filtering Calculation
POWERLINE AC/DC
●
Input Fuse
Earthing
External Filter
Paralleling AC/DC Converters
Chaining Converters
DC Inputs
●
●
●
●
●
Limiting Inrush Current
Maximum Output Capacitance
Settling Time
Isolation Capacitance and Leakage Current
Application Examples
Overload Protection
Input Voltage Drop-Out (brown-outs)
●
Vapour Phase Reflow Soldering
●
Tin Whisker Mitigation
●
●
●
●
INNOLINE
●
●
●
EMC Filter Suggestion
Soft Start Circuit
Positve - to - Negative Converters
BLOCK DIAGRAMS
Transport Tubes & Reels
www.recom-international.com
2009
A-3
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