bowman1710
Full Member level 3
Hi Guys,
Bit of a long shot with the amount of information I can give but just asking in case anyone else had had similar issues
I have a push-pull design that is taking 60V and stepping it up to 360V at 360KHz, Now my issue is when I power the board at start up the board makes a bit of a noise then runs fine. Ive tried playing around with the soft start to see if that helps but with no luck there. Looking at the switching waveforms on the primary of the transformer the waveforms go erratic then sort themselves out, there is no jitter what so ever. Any ideas on where is best to start looking for this start up issue?
The design is similar setup to (page 9) apart from I am not using the secondary rectification on the LT3723 just a full bridge rectifier with inductor/caps, feedback on the output.
http://cds.linear.com/docs/en/demo-board-manual/dc541A.pdf
Bit of a long shot with the amount of information I can give but just asking in case anyone else had had similar issues
I have a push-pull design that is taking 60V and stepping it up to 360V at 360KHz, Now my issue is when I power the board at start up the board makes a bit of a noise then runs fine. Ive tried playing around with the soft start to see if that helps but with no luck there. Looking at the switching waveforms on the primary of the transformer the waveforms go erratic then sort themselves out, there is no jitter what so ever. Any ideas on where is best to start looking for this start up issue?
The design is similar setup to (page 9) apart from I am not using the secondary rectification on the LT3723 just a full bridge rectifier with inductor/caps, feedback on the output.
http://cds.linear.com/docs/en/demo-board-manual/dc541A.pdf