Analog Devices Linear LTM 4700 User Manual page 70

LTM4700
APPLICATIONS INFORMATION
Do not put vias directly on pads, unless they are capped
n
or plated over.
Use a separate SGND copper plane for components
n
connected to signal pins. Connect SGND to GND local
to the LTM4700.
Use Kelvin sense connections across the input R
n
resistor if input current monitoring is used.
70
SENSE
TOP LAYER
V
OUT1
GND
V
IN1
GND
BOTTOM LAYER
V
OUT1
GND
GND
Figure 45. Recommended PCB Layout Package Top View
For more information
For parallel modules, tie the V
n
voltage-sense differential pair lines, RUNn, , COMPna,
COMP pin together. The user must share the SYNC,
nb
SHARE_CLK, FAULT, and ALERT pins of these parts. Be
sure to use pull-up resistors on FAULT, SHARE_CLK
and ALERT.
Bring out test points on the signal pins for monitoring.
n
Figure 45 gives a good example of the recommended layout.
V
OUT0
GND
V
IN0
GND
V
OUT0
GND
GND
4700 F45
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+
, ,V /V
OUTn OSNSn OSNSn
Rev. B