I have a circuit that I want to protect against surges and eventual peaks (e.g. indirect lightning surges) and I was thinking about TVS diodes or MOV.
The situation is:
-My circuit input is 48V that is stepped down to 12V with a MP24943
-The 48V comes from a standard converter (that I bought) connected on the AC line.
-The maximum voltage accepted by the MP24943 is 60V (datasheet)
-I want to protect the MP24943 and what is after it from surges but I couldn't find any TVS Diodes or MOVs that meet the requirements (for 48V the clamp voltage is something around 75V)
I have already read this, and I couln't find any of the Bourns ICs mentioned here in Brazil (specific components are very hard or impossible to find), and the most cost effective solution for me would still be MOVs or TVS, is there any way I can use them in my circuit? Or to find a replacement for them?
I tried Zener Diodes but no success too, the BZD27C Series (datasheet) for example still have a Clamping voltage too high for me.