AN2052 VIPower：实施VIPer53频率调制改善EMI辐射

AN2052 VIPower：实施VIPer53频率调制改善EMI辐射

AN2052
- APPLICATION NOTE
VIPower: IMPLEMENTING FREQUENCY MODULATION
ON VIPer53 TO IMPROVE THE EMI EMISSIONS


ABSTRACT
This report describes how the frequency modulation reduces electromagnetic interference on an SMPS
using Viper53 as primary PWM-switch.
For your reference, comparison of EMI measurement data will be presented.


1. TEST RESULTS
Figure 1: Original, time average at 200kHz, 53.42dBuV/m

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