Datasheet

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© May 2016
Würth Elektronik eiSos GmbH & Co. KG - Data Sheet - REV 1.0
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WPMDU1251501 / 171021501
MagI³C Power Module
VDRM - Variable Step Down Regulator Module
The placement of the input capacitors is highlighted in the following picture of the reference board:
C
IN1
C
IN2
C
IN3
C
OUT1
C
OUT2
R
SET
R
RT
C
SS
R
UVLO2
R
UVLO1
V
IN
V
OUT
PGND
SW
AGND
FB
EN/UVLO
RT/CLK
SS/TRK
INTSS
PG
2: Have a single point ground
The ground connections for the clock setting, soft-start, and enable components should be routed to the AGND pin of the
device. This prevents any switched or load currents from flowing in the analog ground traces. If not properly handled, poor
grounding can result in degraded load regulation or erratic output voltage ripple behavior.
Connect the AGND and PGND copper area at one point at the ground terminal of the first output capacitor.
C
IN1
C
IN2
C
IN3
C
OUT1
C
OUT2
R
SET
R
RT
C
SS
R
UVLO2
R
UVLO1
V
IN
V
OUT
PGND
SW
AGND
FB
EN/UVLO
RT/CLK
SS/TRK
INTSS
PG