LV200 Datasheet, PDF (10/12 Pages) Wall Industries,Inc. – 200 Watt Half-Brick DC - DC Power Converters

Wall Industries, Inc.
Advanced Publication
LV200 SERIES
200 Watt Half-Brick DC/DC Power Converters
TEST SETUP
Regulation and Efficiency Setup
To ensure that accurate measurements are taken, the voltage measurements are taken directly at the terminal of the
module. This minimizes errors due to contact and trace lengths between the load and the output of the supply. The
following is a diagram of the test setup.
Regulation and Efficiency Probe Setup
R_trace R_contact +V_in
+V_out R_contact
R _trace
V_in
V_out
R _load
R R _trace
contact
-V _in
R _contact
-V_out
R _trace
Output Ripple Voltage Setup
The module is tested with a 1µF ceramic capacitor in parallel with a 10µF tantalum capacitor across the output terminals.
Ripple Voltage Probe Setup
+V_out
LV200 SERIES
-V_out
10µF 1µF
Tantalum Ceramic
SCOPE
PROBE
R _load
Input Reflected Ripple Current & Input Ripple Current Setup
The module is tested for input reflected ripple current (Irrc) and input ripple current (Irc). The input ripple voltage is also
measured at the pins with the following input filter. If there is a need to reduce input ripple current/voltage then
additional ceramic capacitors can be added to the input of the converter.
Irrc
12µH
Low
Impedance
Source
6800µF
electrolytic
capacitor
Ripple Current Setup
Irc
SCOPE
PROBE
+V_in
1µF
-V ^ceramic
capacitor
in
LV200 SERIES
07/11/2013
Wall Industries, Inc. • 37 Industrial Drive, Exeter, NH 03833 • Tel: [phone] • Toll Free: 888-597-9255 • Fax [phone]
website: www.wallindustries.com • e-mail: [e-mail]
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