Operating Frequency (typ)
EMC Specifications
102
The PKF power module is mounted on a double sided printed circuit
board (PB) with groundplane during EMC measurements. The
fundamental switching frequency is 485 kHz 15% @ IO =
(0.5...1.0) × IOmax.
101
100
99
Conducted EMI (input terminals)
98
97
96
-40
-20
0
+20
+40
+60
+80 +100
Pin temperature (°C)
550
72 V
48 V
500
450
400
350
300
38 V
PKF series typical conducted EMI performance
Test set up
0
20
40
60
80
100
120
140
Load (%)
The operating frequency vs. load and input voltage (72V, 48V and 38V).
Tp= +25°C.
Radiated EMS (Electro-Magnetic Fields)
Radiated EMS is measured according to test methods in IEC
Standard publ. 801-3. No deviation outside the VO tolerance band
will occur under the following conditions:
The PKF meets class A in VDE 0871/0878, FCC Part 15J, and CISPR 22
(EN 55022).
Frequency range
0.01...200 MHz
200...1,000 MHz
1...12 GHz
Voltage level
3 Vrms/m
3 Vrms/m
10 Vrms/m
Radiated EMI
ESD
Radiated emission of electromagnetic fields is measured at 10 m
distance.
Electro Static Discharge is tested according to IEC publ. 801-2. No
destruction will occur if the following voltage levels are applied to
any of the terminal pins:
30...100 MHz
100...200 MHz
200...230 MHz
230...1,000 MHz
1...10 GHz
60 dB mV/m
40 dB mV/m
30 dB mV/m
35 dB mV/m
46 dB mV/m
Test
Voltage level
4 kV
Air discharge
Contact discharge
2 kV
EFT
Electrical Fast Transients on the input terminals could affect the
output voltage regulation causing functional errors on the Printed
Board Assembly (PBA). The PKF power module withstand EFT
levels of 0.5 kV keeping VO within the tolerance band and 2.0 kV
without destruction. Tested according to IEC publ. 801-4.
Conducted EMS
Electro Magnetic Susceptibility is measured by injection of elec-
trical disturbances on the input terminals. No deviation outside
the VO tolerance band will occur under the following conditions:
Frequency range
0.15...300 MHz
Voltage level
1.0 Vrms
Output Ripple & Noise (VOac)
The signal is amplitude modulated with 1 kHz/80% and applied
both differential and common mode.
Output ripple is measured as the peak to peak voltage of the funda-
mental switching frequency.
EN/LZT 146 33 R1A (Replaces EN/LZT 137 09 R7) © Ericsson Microelectronics AB, June 2000
18
ERICSSON [ ERICSSON ]
