DPA423 Power Integrations, Inc., DPA423 Datasheet - Page 20

• Manufacturer Part Number: DPA423
• Description: Highly Integrated DC-DC Converter Ics For Distributed Power Architecturesthe Dpa-switch ic Family Introduces a Highly Integratedsolution For DC-DC Conversion Applications in The 16-75 Vdcinput Range.dpa-switch Uses The Same Proven Topology as Topswit
• Manufacturer: Power Integrations, Inc.

Figure 27. Layout Considerations for DPA-Switch Using R Package.
Figure 28. Layout Considerations for DPA-Switch Using G Package.
20
DPA423-426
L
4/04
TOP VIEW
DC
In
+
-
V
Solder Side
Component Side
TOP VIEW
Via between board layers
Maximize hatched copper area for optimum heat sinking
DC
+
In
-
V
Top Side PCB
Bottom Side PCB
DPA-Switch
Maximize hatched copper area for optimum heat sinking
Via between board layers
V
(Two sided printed circuit board)
S
C
V
DPA-Switch
V
V
S
L
V
D
X
C
S
L
D
X
V
-
S
F
V
V
V
V
coupler
Opto-
Transformer
coupler
Opto-
m
T
a
n
o
e
DPA-Switch Heatsink
s
r
f
r
r
V
V
V
Bottom Diode
PI-3805-012904
Heatsink
+
(Coupled)
-
Output
Diode
Inductor
Out
DC
V
V
V
Out
DC
+
PI-2883-060602
-