Datasheet
WPMDB1400362Q / 171040302
MagI
3
C Power Module
VDRM – Variable Step Down Regulator Module
we-online.com Würth Elektronik eiSos GmbH & Co. KG – Data Sheet Rev. 1.0
© May 2016 39/48
4: Feedback layout
The feedback resistor, R
SET
should be located close to the FB pin. Since the FB node is high impedance, maintain the trace
thickness small. The traces from R
SET
should be routed away from the body of the MagI³C power module to minimize noise
pickup. Connect the feedback trace at the positive terminal of the last output capacitor (C
OUT2
). As this is the node of lowest
noise.
C
IN1
C
IN2
C
OUT1
C
OUT2
R
SET
R
RT
MagI
3
C Module
V
IN +
V
IN -
V
OUT -
V
OUT +
Bottom
GROUND PLANE
VIN
VIN
VIN
AGND
AGND
FB
VSENSE+
PGND
VOUT
RT/CLK
30
31
32
33
34
35
36
4
38
9
10
11
8
12
13
14
SW
1
29
28 27
UVLO
ENABLE
PG
6
SS/TRK
5 7
39
37
C
SS
5: Make input and output bus connections as wide as possible
This reduces any voltage drops on the input or output of the converter and maximizes efficiency.
C
IN1
C
IN2
C
OUT1
C
OUT2
R
SET
R
RT
MagI
3
C Module
V
IN +
V
IN -
V
OUT -
V
OUT +
Bottom
GROUND PLANE
VIN
VIN
VIN
AGND
AGND
FB
VSENSE+
PGND
VOUT
RT/CLK
30
31
32
33
34
35
36
4
38
9
10
11
8
12
13
14
SW
1
29
28 27
UVLO
ENABLE
PG
6
SS/TRK
5 7
39
37
C
SS