E
203
Technical Specification
EN/LZT 146 306 R4A July 2008
PKM 4000D PINB Series
DC/DC converters, Input 36-75 V, Output 40 A/132 W
SEC/D (Julia You)
EYINGJI
2007-12-10
B
© Ericsson Power Modules AB
EMC Specification
Conducted EMI measured according to EN55022, CISPR 22
and FCC part 15J (see test set-up).
The fundamental switching frequency is 200 kHz for
PKM 4110D PINB @ VI = 53 V, max IO.
Conducted EMI Input terminal value (typ)
Test set-up
Layout recommendation
The radiated EMI performance of the DC/DC converter will
depend on the PCB layout and ground layer design. It is also
important to consider the stand-off of the DC/DC converter.
If a ground layer is used, it should be connected to the output
of the DC/DC converter and the equipment ground or
chassis.
EMI without filter
A ground layer will increase the stray capacitance in the PCB
and improve the high frequency EMC performance.
External filter (class B)
Required external input filter in order to meet class B in
EN 55022, CISPR 22 and FCC part 15J.
Output ripple and noise
Output ripple and noise measured according to figure below.
See Design Note 022 for detailed information.
Filter components:
C1 = 0.68 μF
C2,3 = 1.0 μF
C4,5 = 2.2 nF
C6,7 = 100 uF
L1,2 = 0.768 mH
Output ripple and noise test setup
EMI with filter
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