EPR-9 Datasheet, PDF (22/32 Pages) Power Integrations, Inc. – Engineering Prototype Report 5 W, Universal Input, Dual Output, Isolated, TNY266 (EP9)

5 W Universal Input Dual Output Isolated TNY266
03-April-2001
8.6 Conducted EMI Scans
The attached plots show worst-case EMI performance for EP8 as compared to CISPR22B conducted
emissions limits. Peak detection is commonly used for initial diagnosis of EMI, as full frequency range
results can be quickly obtained, using a common spectrum analyzer. This is also a worst-case form of
analysis, as the CISPR22B limits are based on quasi-peak and average detection, both of which give lower
amplitude results than peak detection.
For EMI and safety techniques refer to PI application note AN15 (Figure 6 shows a typical test set up).
Quasi-peak
Average
Figure 8.6.1 - EP9, TNY266, L, N, 120 V_AC, Full Load, CISPR Limits.
Figure 8.6.2 - EP9, TNY266, L, N, 230 V_AC, Full Load, CISPR Limits.
Power Integrations, Inc.
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