Dear TI Experts,
I am working on my battery management project with F28335 MCU. In my case, I need to use two MCU control two individual converters to supply a DC bus. If I do not synchronize this two MCU, there will be a huge fluctuation at the output current.
What I am doing now is using the EPWMxSYNCO signal generated by ePWM module, and send it out via GPIO-33. The receiving MCU will receive the signal via EPWMxSYNCI at GPIO-32. But the receiving device has a issue on the synchronization - it cannot sync at each cycle of TBCTR generate the signal. Hence it causes the jittering of the synced device, and the converters output became uncontrollable.
The attached picture shows the EWPMxSYNCO from the master device. The sync pulses disappeared in almost half of the scope.
What causes such issue in my case?