Datasheet

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© May 2016
Würth Elektronik eiSos GmbH & Co. KG - Data Sheet - REV 1.0
18/46
WPMDU1251501 / 171021501
MagI³C Power Module
VDRM - Variable Step Down Regulator Module
The use of very low ESR capacitors leads to an output voltage ripple as shown below:
When capacitors with slightly higher ESR are utilized, the dominant parameter which influences the output voltage ripple
is just the ESR:






Consequently the shape of the output voltage ripple changes, as shown below:
-10
-5
0
5
10
0 1 2 3
Output voltage ripple [mV]
time [µs]
Output voltage ripple with low ESR capacitors
-100
-50
0
50
100
0 1 2 3
Output voltage ripple [mV]
time [µs]
Output voltage ripple with high ESR capacitors