PCB plane under converter
BUS+
QPI+
C
IN
1
V
IN
+
V
OUT
+
BUS
SUPPLY
CB
QPI
47µF
SHIELD
CONVERTER
QPI-
C1
RY
C2
SHIELD
BUS-
V
IN
-
V
OUT
-
C3
C4
Optional Connection
10
Ω,
1/4 W
PCB plane under converter
V
IN
+
C
IN
2
V
OUT
+
CONVERTER
V
IN
-
C5
C6
SHIELD
V
OUT
-
C7
C8
Additional Converters
Figure 7 –
Schematic for supporting multiple DC-DC converters. Note only a single RY is required. Use values recommended by converter
manufacturer for C
IN
and Y-capacitors C1-C8.
PCB plane under converter
BUS+
QPI+
BUS+
QPI+
C
IN
V
IN
+
V
OUT
+
BUS
SUPPLY
CB
QPI
47 µF
SHIELD
QPI
SHIELD
CONVERTER
QPI-
C1
RY
C2
SHIELD
BUS-
QPI-
BUS-
V
IN
-
V
OUT
-
C3
C4
Optional Connection
10
Ω,
1/4 W
Figure 8 –
Series connection of QPI for higher attenuation.
Picor Corporation • www.picorpower.com
QPI-1L Data Sheet Rev. 2.0 Page 5 of 8
VICOR [ VICOR CORPORATION ]
