EPR-54 Datasheet, PDF (27/40 Pages) Power Integrations, Inc. – Engineering Prototype Report for EP 54 - 2.75 W Charger/Adapter Using LNK520P

07-May-2004
EPR-54 – LinkSwitch 2.75 W Low Cost Charger / Adapter
10 Conducted EMI
Conducted emissions tests were completed at worst-case conditions: 230 VAC at full
load, 5.5 V/0.5 A. Measurements with Artificial Hand connection are less than those with
floating DC output load resistor. The output DC cable was included.
The test sample exhibits greater than 10 dBµV margin below composite quasi-peak and
average limits. This provides adequate margin to variation in transformer EMI
characteristics. The results show significant attenuation in high frequency emissions.
Composite EN55022B / CISPR22B conducted limits are shown.
Figure 25 - Conducted EMI, 230 VAC, Maximum DC Load,
with Artificial Hand Connected to Output Load.
Page 27 of 40
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