cupoftea
Advanced Member level 5
Hi,
The atatched (LTspice sim and jpeg) demo's how bad GDT's are with series caps in the secondary side.
At the start and end of the pulse train , the dreadful problems are easily seen.
I am wondering why no-one has come up with offtheshelf , gate drive hi-side supplies for offline PSU's?....they provide the defacto, gauranteed method for problem free gate drive....all the user would need would be to use a digital isolator to send the gate signal to the hi side gate driver.
The atatched (LTspice sim and jpeg) demo's how bad GDT's are with series caps in the secondary side.
At the start and end of the pulse train , the dreadful problems are easily seen.
I am wondering why no-one has come up with offtheshelf , gate drive hi-side supplies for offline PSU's?....they provide the defacto, gauranteed method for problem free gate drive....all the user would need would be to use a digital isolator to send the gate signal to the hi side gate driver.
