Facebook
Google
GitHub
Linkedin
Its 400W converter with output voltage and current regulation as pictured. Its original mosfet and 15 amp fuse got burned,
however I didn't exceed any ratings. Now I'm trying several different mosfets that are rated much higher amps and volts than this booster can provide and this is what's happening:
On output I have a 12V 60W car globe, when I'm turning up the current potentiometer nothing happens for about 3/4 of the turning range.
(the globe pulls steady 5amps) untill certain point where current starts increasing rapidly and mosfet gets very hot. I'm switching circuit off at 15 amps to avoid burning the mosfet.
When this happens the globe doesn't get any brighter, so it looks like the mosfet is consuming all current above 5amps.
Is that normal behaviour of N-mosfets or there is something wrong with booster's regulation?
however I didn't exceed any ratings. Now I'm trying several different mosfets that are rated much higher amps and volts than this booster can provide and this is what's happening:
On output I have a 12V 60W car globe, when I'm turning up the current potentiometer nothing happens for about 3/4 of the turning range.
(the globe pulls steady 5amps) untill certain point where current starts increasing rapidly and mosfet gets very hot. I'm switching circuit off at 15 amps to avoid burning the mosfet.
When this happens the globe doesn't get any brighter, so it looks like the mosfet is consuming all current above 5amps.
Is that normal behaviour of N-mosfets or there is something wrong with booster's regulation?
