AN2864 Datasheet, PDF (25/29 Pages) STMicroelectronics – VIPER17L demonstration board with wide-range

AN2864
Figure 24. OVP protection
Testing the board
Figure 25. OVP protection (detail)
It is possible not to implement this protection, if it is not necessary. This is done by excluding
diode D2 and resistor R14, thereby also reducing the number of components.
3.8
EMI measurements
A pre-compliant test in accordance with European standard EN55022 (Class B) is also
performed. Results are displayed in Figure 26 and Figure 27:
Figure 26. 115 V_AC
Figure 27. 230 V_AC
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