FAQs
cancel
Turn on suggestions
Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type.
Showing results for 
Search instead for 
Did you mean: 

viper22a short circuit protection problem

MehmetKaya
Associate III

‎2025-01-30 05:05 AM - edited ‎2025-01-30 05:06 AM

Hello, I use viper22A for 220VAC to 14VDC-1A PSU. When I shorted output, around 3A current flows from Ampermeter. Viper22A datasheet explain that if output is short circuit no feedback will come from optocoupler, FB pin voltage will be 0V (my measurement voltage on FB pin 0V too), and viper22A switch-off the Mosfet.

Why mosfet switched continuously although I did output shortcircuit?

Labels:
0 Kudos
1 REPLY 1
Peter BENSCH
ST Employee

‎2025-01-30 07:52 AM

Please upload the schematics of your current design to be able to help you in a meaningful way.

Regards
/Peter

In order to give better visibility on the answered topics, please click on Accept as Solution on the reply which solved your issue or answered your question.
0 Kudos
Top