PRD15 Datasheet, PDF (12/14 Pages) CUI INC – DC-DC CONVERTER

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CUI Inc │ SERIES: PRD15 │ DESCRIPTION: DC-DC CONVERTER
date 03/28/2016 │ page 12 of 14
TEST CONFIGURATIONS
Input Ripple Current & Output Noise
All models are tested and specified for input reflected ripple current and output noise as per layouts shown in Figures 1 &
2.The Cbus and Lbus components simulate a typical DC voltage bus.However, your specific system configuration may
require additional considerations.
Figure 1 Measuring Input Ripple Current
TO
OSCILLOSCOPE
+
VIN ^–
+
–
LBUS
CBUS
CURRENT
PROBE
CIN
+VIN
-VIN
Figure 2 Measuring Output Ripple and noise
(PARD)
C1
C2
SCOPE
RLOAD
Table 1
C_IN
C_BUS
L_BUS
33µF, ESR < 700mΩ @ 100kHz
220µF, ESR < 100mΩ @ 100kHz
12µH
Table 2
C1
1µF
C2
10µF
load 2-3 inches (51-76mm) from module
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