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DCMJU24S51-10 Datasheet(PDF) 5 Page - Wall Industries,Inc.

Part # DCMJU24S51-10
Description  10 Watt DC/DC Power Converters
Download  6 Pages
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Manufacturer  WALL [Wall Industries,Inc.]
Direct Link  http://www.wallindustries.com
Logo WALL - Wall Industries,Inc.

DCMJU24S51-10 Datasheet(HTML) 5 Page - Wall Industries,Inc.

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Wall Industries, Inc.
Rev A
DCMJU10 SERIES
10 Watt DC/DC Power Converters
11/27/2013
Wall Industries, Inc. • 37 Industrial Drive, Exeter, NH 03833 • Tel: 603-778-2300 • Toll Free: 888-597-9255 • Fax 603-778-9797
website: www.wallindustries.com • e-mail: sales@wallindustries.com
Page 5 of 6
DESIGN & FEATURE CONSIDERATIONS
Output Ripple Reduction
A good quality low ESR capacitor placed as close as possible across the load will give the best ripple and noise performance. To
reduce output ripple, it is recommended to use 4.7µF capacitors at the output.
+Out
-Out
+Vin
-Vin
Load
DC Power
Source
+
-
Cout
Single Output
DC/DC
Converter
+Out
-Out
+Vin
-Vin
Load
DC Power
Source
+
-
Cout
Com.
Load
Cout
Dual Output
DC/DC
Converter
Thermal Considerations
Many conditions affect the thermal performance of the power module, such as orientation, airflow over the module, and board
spacing. To avoid exceeding the maximum temperature rating of the components inside the power module, the case temperature
must be kept below 100°C. The derating curves are determined from measurements obtained in a test setup.
DUT
Position of air velocity
probe and thermocouple
50mm / 2in
Air Flow
15mm / 0.6in
TEST CONFIGURATIONS
Input Reflected-Ripple Current Test Setup
Input reflected-ripple current is measured with an inductor Lin (4.7µH) and Cin (220µF, ESR < 1.0Ω at 100 KHz) to simulate source
impedance. Capacitor Cin offsets possible battery impedance. Current ripple is measured at the input terminals of the module.
Measurement bandwidth is 0-500 KHz.
+Out
-Out
+Vin
-Vin
DC/DC
Converter
Load
Battery
+
Lin
+
Cin
To Oscilloscope
Current
Probe
Peak-to-Peak Output Noise Measurement Test
Use a 0.47µF ceramic capacitor. Scope measurement should be made by using a BNC socket, measurement bandwidth is 0-20MHz.
Position the load between 50mm and 75mm from the DC/DC converter.
+Out
-Out
+Vin
-Vin
Resistive
Load
Scope
Copper Strip
Cout
Copper Strip
Single Output
DC/DC
Converter
+Out
-Out
+Vin
-Vin
Resistive
Load
Scope
Copper Strip
Cout
Com.
Scope
Cout
Copper Strip
Copper Strip
Dual Output
DC/DC
Converter


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