dpa422 Power Integrations, Inc., dpa422 Datasheet - Page 20

• Manufacturer Part Number: dpa422
• Description: Highly Integrated Dc-dc Converter Ics For Power Over Ethernet & Telecom Applications
• Manufacturer: Power Integrations, Inc.

Rev. S 12/07
Figure 28. Layout Considerations for DPA-Switch Using R Package.
Figure 29. Layout Considerations for DPA-Switch Using G Package.
20
DPA422-426
TOP VIEW
DC
In
TOP VIEW
+
-
V
DC
+
In
-
Solder Side
Component Side
Via between board layers
Maximize hatched copper area for optimum heat sinking
V
Top Side PCB
Bottom Side PCB
Maximize hatched copper area for optimum heat sinking
Via between board layers
V
DPA-Switch
(Two sided printed circuit board)
S
C
V
DPA-Switch
S
L
V
V
V
C
D
X
S
L
D
X
V
-
S
F
V
V
V
V
coupler
Opto-
Transformer
coupler
Opto-
m
DPA-Switch Heatsink
T
a
n
o
e
s
r
f
r
r
V
V
V
Bottom Diode
PI-3805-012904
Heatsink
+
(Coupled)
-
Output
Diode
Inductor
Out
DC
V
V
V
PI-2883-060602
Out
DC
+
-
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