Data Sheet
EQW012/020/023/025 Series, Eighth-Brick Power Modules:
36 - 75Vdc Input; 1.2Vdc to 5Vdc Output; 12A to 25A Output
December 12, 2008
EMC Considerations
The figure 44 shows a suggested configuration to
Layout Considerations
meet the conducted emission limits of EN55022 Class
B.
Copper paths must not be routed beneath the power
module mounting inserts. Recommended SMT layout
shown in the mechanical section are for reference
only. SMT layout depends on the end PCB
configuration and the location of the load. For
additional layout guide-lines, refer to FLTR100V10
data sheet or contact your local Lineage Power field
application engineer.
Ld1
Vin+
Vin-
Vout+
Vout-
CY1
CX1
CX5
CX3
EQW
CX4
CX2
CY2
LC1
Cim
Figure 44. Suggested Input Filter Configuration
for EN55022 Class B.
Filter components:
Cx1: 47uF aluminum electrolytic, 100V (Nichicon PW series)
Cx2: 2x1uF ceramic, 100V (TDK C4532X7R2A105M)
Cx3: 2x1uF ceramic, 100V (TDK C4532X7R2A105M)
Cx4: 2x1uF ceramic, 100V (TDK C4532X7R2A105M)
Cx5: 100uF aluminum electrolytic, 100V (Nichicon PW
series)
Cy3, Cy4: 3300pF ceramic, 1500V (AVX
1812SC332MAT1A)
Cim: 3300pF ceramic, 1500V (AVX 1812SC332MAT1A)
Lc1: 768 uH, 4.7A (Pulse Engineering P0422)
Ld1: 4.7 uH, 5.5A (Vishay IHLP-2525CZ)
Level [dBµV]
80
70
EN55022 Class B Conducted Average dBuV
60
50
+
40
30
20
10
0
150k 300k 500k
1M
2M 3M 4M5M 7M 10M
30M
Frequency [Hz]
Figure 45. EMC signature using recommended
filter.
For further information on designing for EMC
compliance, please refer to the FLTR100V10 data
sheet (FDS01-043EPS).
LINEAGE POWER
16
LINEAGEPOWER [ LINEAGE POWER CORPORATION ]
