WPMDH1100601 / 171010601
MagI3C Power Module
VDRM – Variable Step Down Regulator Module
4: Connection to VIN
MagI3C Module
PGND
4
5
6
1
3
2
7
GND
VIN
GND
VOUT
CIN1
CIN2
COUT1 COUT2
RON
RENT
CSS
RFBB
CFF
RFBT
Bottom
RENB
GROUND PLANE
In order to avoid noise injection into RON pin, the resistor RON should be routed to one of the input capacitors.
5: Feedback layout
MagI3C Module
PGND
4
5
6
1
3
2
7
GND
VIN
GND
VOUT
CIN1
CIN2
COUT1 COUT2
RON
RENT
CSS
RFBB
CFF
RFBT
Bottom
RENB
GROUND PLANE
The resistor divider (RFBT and RFBB) should be located close to the FB pin. Since the FB node is high impedance, the trace
thickness should be kept small. The traces from the FB pin to the middle point of the resistor divider should be as short as
possible. The upper terminal of the output resistor divider (where the VOUT is normally applied) should be connected to the
positive terminal of the last output capacitor (COUT2), because this is the node with the lowest noise. The traces from RFBT
RFBB and CFF should be routed away from the body of the MagI³C Power Module to minimize noise pickup.
,
we-online.com
Würth Elektronik eiSos GmbH & Co. KG – Data Sheet Rev. 1.0
© September 2017
42/54
WURTH [ WURTH ELEKTRONIK GMBH & CO. KG, GERMANY. ]
