Other Parts Discussed in Thread: UCC28180, TIDA-00776, UCC28019A, UCC28019, TL431
We boguht the ucc28180evm-573 for evaluating the circuit.
But we ended with a problem, the evaluation module blown up at the power up, without any load connected to it.
I tried to investigate this further, I noticed there should be a specific power up sequence???
Apply the AC then the AUX 12V supply.
The power up process I am using now is Apply AC, then Apply AUX then BOOOOOOM
I had to repair the board by replacing the Mosfet and the dead UCC28180, repeat the process, BOOOOOM
By searching the internet, I came across this file TIDA-00776, and this module has an AUX supply already, BUT there was a switch to power up the circuit, NOT directly powered up once you apply the power.
It is clear there is some trick out there in the power up sequence.
I would love to hear from ti regarding this issue.