What is the AC rating of LX5V pin of S6BP501A and S6BP502A?
Figure 1 shows an example of the switching waveform of the LX5V pin of S6BP501A and S6BP502A.
Figure 1. Example of LX5V Switching Waveform
Since the AC withstand voltage of the LX5V pin is 12 V, IC will not be damaged even if a ringing waveform as shown in Figure 1 occurs.
To measure the high frequency ringing waveform correctly, measure close to the IC pin. Also, it is necessary to connect the oscilloscope probe GND short, as shown in Figure 2.
Figure 2. Oscilloscope Probe GND
A method to reduce ringing noise is to add a snubber circuit. Figure 3 shows an example of a snubber circuit.
Figure 3. Example of a Snubber Circuit for DD5V