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Advance Data Sheet: FReta iEB Series –Single Output Eighth Brick Bus Converter
©2004-2007 TDK Innoveta Inc.
10/29/2007
℡
(877) 498
-
0099
11/12
EMC Considerations: TDK Innoveta power
modules are designed for use in a wide
variety of systems and applications. For
assistance with designing for EMC
compliance, please contact TDK Innoveta
technical support.
Input Impedance:
The source impedance of the power feeding
the DC/DC converter module will interact
with the DC/DC converter. To minimize the
interaction, a 33-100uF input electrolytic
capacitor should be present if the source
inductance is greater than 2uH.
Reliability:
The power modules are designed using TDK
Innoveta’s stringent design guidelines for
component derating, product qualification,
and design reviews. Early failures are
screened out by both burn-in and an
automated final test. The MTBF is
calculated to be greater than 3.9M hours at
full output power and Ta = 40˚C using the
Telcordia SR-332 calculation method.
Improper handling or cleaning processes can
adversely affect the appearance, testability,
and reliability of the power modules. Contact
TDK Innoveta technical support for guidance
regarding proper handling, cleaning, and
soldering of TDK Innoveta’s power modules.
Quality:
TDK Innoveta’s product development
process incorporates advanced quality
planning tools such as FMEA and Cpk
analysis to ensure designs are robust and
reliable. All products are assembled at ISO
certified assembly plants.
Input/Output Ripple and Noise Measurements:
100KHz
Voutput
Cext
12
+
12uH
1 2
esr<0.7
Battery
100KHz
+
RLoad
12
esr<0.1
-
Vinput
220uF
12
Ground Plane
33uF
12
-
The input reflected ripple is measured with a current probe and oscilloscope. The ripple
current is the current through the 12uH inductor.
The output ripple measurement is made approximately 9 cm (3.5 in.) from the power module
using an oscilloscope and BNC socket. The capacitor Cext is located about 5 cm (2 in.) from
the power module; its value varies from code to code and is found on the electrical data page
for the power module of interest under the ripple & noise voltage specification in the Notes &
Conditions column.