Ericsson Internal
EBAOCMA
PRODUCT SPECIFICATION
1 (5)
Prepared (also subject responsible if other)
No.
3/1301-BMR 637 02
17
Technical Specification
Approved
Checked
Date
Rev
Reference
EN/LZT 146 306 R2C Jan 2007
PKM 4000D PINB series
DC/DC converters, Input 36-75 V, Output 40 A/132 W
MPM/BK [Andréas Svensson]
MICOSPE
2006-9-13
A
© 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.
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
External filter (class B)
A ground layer will increase the stray capacitance in the PCB
and improve the high frequency EMC performance.
Required external input filter in order to meet class B in
EN 55022, CISPR 22 and FCC part 15J.
Filter components:
C1 = 0.68 µF
C2,3 = 1.0 µF
C4,5 = 2.2 nF
C6,7 = 100 µF
L1,2 = 0.768 mH
Output ripple and noise
Output ripple and noise measured according to figure below.
Oscilloscope input impedance 50 Ω.
Output ripple and noise test setup
EMI with filter
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