Other Parts Discussed in Thread: LMG1205
I use the LM5113 driver in WSON package on a 25V to 12V synchronous BUCK topology with MOS EPC2031. I encountered a MOS recommutation problem when I cut a lot of current.
I normally followed the routing rules to reduce the parasitic inductances of the circuit.
here are the waveforms encountered:
Legend :
- Blue HI pin
- Green HS pin
We notice that at the start it has 3 big pulses which make the current rise up to 100A but when we do not stop sending commands the middle point always moves.
The following waveform shows the current in the MOS High Side during the phenome.
Legend :
- Blue Current High Side MOS
- Green HS pin
Have you ever encountered this problem? Does the LMG1205 fix this problem?
Thanks
Clément