WPMDM1500602 / 171050601
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:
Output voltage ripple with low ESR capacitors
10
5
0
-5
-10
0
1
2
3
time [µs]
When capacitors with slightly higher ESR are utilized, the dominant parameter which influences the output voltage ripple is
just the ESR:
ESR≤ VOUT ripple
∆IL
(9)
Consequently, the shape of the output voltage ripple changes, as shown below:
Output voltage ripple with high ESR capacitors
100
50
0
-50
-100
0
1
2
3
time [µs]
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© July 2018
Würth Elektronik eiSos GmbH & Co. KG – Data Sheet Rev. 2.0
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