Hello,
I have been designing a full bridge single phase inverter. It's bus voltage is 20Vdc. There is enough of dead-time for Vgs signals between the-same-leg mosfets and they are driven by gate driver. I checked Vgs signals for the-same-leg mosfets and saw the dead-time clearly. At each power mosfet turn off moment there is ringing in the bus voltage. Moreover, drain source voltage of each mosfet has %100 overshoot.
If there is a shoot-through problem, which could led bus voltage to collapse for short period of time, why would it occur in my design? I already have dead-time between Vgs signals.
Does anybody have any idea why? If you need more info, please tell me. I can upload some scope pictures if you need.
Thank you for your time
Alper
I have been designing a full bridge single phase inverter. It's bus voltage is 20Vdc. There is enough of dead-time for Vgs signals between the-same-leg mosfets and they are driven by gate driver. I checked Vgs signals for the-same-leg mosfets and saw the dead-time clearly. At each power mosfet turn off moment there is ringing in the bus voltage. Moreover, drain source voltage of each mosfet has %100 overshoot.
If there is a shoot-through problem, which could led bus voltage to collapse for short period of time, why would it occur in my design? I already have dead-time between Vgs signals.
Does anybody have any idea why? If you need more info, please tell me. I can upload some scope pictures if you need.
Thank you for your time
Alper