Datasheet

Advance Data Sheet: iAF Series – Non-isolated SMT Power Module
©2011 TDK Innoveta Inc.
iAF12_Full_Datasheet_10032012.doc 10/3/2012
℡
(877) 498
-
0099
17/18
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, low-esr
capacitors should be located at the input to the
module. It is recommended that a 22uF ceramic input
capacitor be placed as close as possible to the
module. Data is provided on the electrical
characteristics page, showing the typical input ripple
voltage with four 22uF ceramic capacitors (TDK part
C3225X7R1C226MT).
Reliability:
The power modules are designed using TDK
Innoveta’s stringent design guidelines for component
derating, product qualification, and design reviews.
The MTBF is calculated to be greater than 14M hours
at full output power and Ta = 40˚C using the Telcordia
SR-332 calculation method.
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
1
2
+
1uH
1 2
esr<0.1
Battery
100KHz
+
RLoad
1
2
esr<0.1
-
Vinput
200uF
1
2
Ground
Plane
300uF
1
2
-
The input reflected ripple is measured with a current probe and oscilloscope. The ripple current is the current through the 1uH 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.