Other Parts Discussed in Thread: LMG34XX-BB-EVM, LMG3411EVM-029, LMG3410R070, LMG5200, LMG1210
Hello I am using the LMG3411EVM-029 together with LMG34XX-BB-EVM.
In my application I need to go very high with switching frequency, and I need to exploit the limit of the LMG3411.
At no load condition, I tried to give a 50% duty cycle PWM; I left the default dead time of the EVM untouched.
When I raise the PWM frequency, as I get around ~1900kHz I get a fault condition (still at no load conditions).
If I look at the two complementary HI and LO pwm inputs, it seems there is still room to increase the frequency, and I see the correct figure with dead times at the two inputs.
In fact I expected to be able to go higher.
What could cause the fault condition, if there is no load? How can I make a check of what is going bad?