WPMDH1100601 / 171010601
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 (generic waveform):
Outputvoltage 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 that influences the output voltage ripple is just
the ESR:
VOUT ripple
ESR≤
(12)
∆IL
Consequently, the shape of the output voltage ripple changes as shown below (generic waveform):
Outputvoltage ripple with high ESR capacitors
100
50
0
-50
-100
0
1
2
3
time [µs]
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Würth Elektronik eiSos GmbH & Co. KG – Data Sheet Rev. 1.0
© September 2017
22/54
WURTH [ WURTH ELEKTRONIK GMBH & CO. KG, GERMANY. ]
