cui.com

date 03/28/2016

│ page 12 of 14

CUI Inc

│ SERIES: PRD15 │ DESCRIPTION: DC-DC CONVERTER

TEST CONFIGURATIONS

Input Ripple Current & Output Noise

AllmodelsaretestedandspecifiedforinputreflectedripplecurrentandoutputnoiseasperlayoutsshowninFigures1&

2.TheCbusandLbuscomponentssimulateatypicalDCvoltagebus.However,yourspecificsystemconfigurationmay

require additional considerations.

Figure 1 Measuring Input Ripple Current

Table 1

C

IN

33µF,ESR<700mΩ@100kHz

C

BUS

220µF,ESR<100mΩ@100kHz

L

BUS

12µH

+VIN

-VIN

CURRENT

PROBE

TO

OSCILLOSCOPE

+

–

+

–

Figure 2 Measuring Output Ripple and noise

(PARD)

Table 2

C1

1µF

C2

10µF

load 2-3 inches (51-76mm) from module

C1

C2

SCOPE

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