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Forum Post: TMS320F280049: Prevent short in T-Leg Inverter

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Part Number: TMS320F280049 Hi All, i have a T-leg bridge like in this picture: I wanted to use ePWM1 for T1 and T3 . OutA is T1 and OutB is T3. For T2 and T4 i wanted to use ePWM2 with OutA to T2 and OutB to T4. Is there a possibility to get a trip event or generally prevent that T4 and T1 are on at the same time? I thought about using the Trip units and the XBar to do this but found it rather complicated. My solution if possible would be to feed the PWMs for T1 and T4 back to the MCU via additional GPIOs and configure the INPUTXBar in a way that sending the inverted signal to the INPUTs 7 and 8 of the ePWM Trip unit this should leed to a trip if both T1 and T2 are active. Regards Alex

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