Data Sheet

WPMDH1152401 / 171012402
MagI
3
C Power Module
VDRM – Variable Step Down Regulator Module
we-online.com Würth Elektronik eiSos GmbH & Co. KG – Data Sheet Rev. 2.0
© December 2017
34/54
OUTPUT VOLTAGE RIPPLE
The output voltage ripple of the V
OUT
depends on several parameters, as already shown in DESIGN FLOW – Step4. The
operating mode (CCM or DCM) further influences the output voltage ripple as shown in the two figures below:
The output voltage ripple during CCM operation is much lower (≤10mV
pp
) than the ripple during DCM operation (around
27mV
pp
).
-30
-20
-10
0
10
20
30
0 20 40 60 80 100 120
Output Voltage Ripple [mV]
Time [µs]
V
OUT ripple
V
IN
= 24V, V
OUT
= 12V, I
OUT
= 50mA - DCM operation
27mV
-30
-20
-10
0
10
20
30
0 2 4 6 8 10 12 14 16 18 20
Output Voltage Ripple [mV]
Time [µs]
V
OUT ripple
V
IN
= 24V, V
OUT
= 12V, I
OUT
= 2A - CCM operation
10mV