TEA2017 PFC OVP Issue

[TinoPan0424]

Dear All,

I hope this message finds you well. I am reaching out regarding an application issue with the TEA2017. Our end customer requires the output to be shut off when the input voltage exceeds 275Vac. In my design, the PFC output voltage is set at 385Vdc. When the input voltage surpasses 310Vac, the SNSBOOST Pin voltage is 3.0V, at which point the PFC boost function is deactivated. However, the LLC continues to operate normally.

We are seeking a solution to achieve the desired functionality of shutting down the output when the input voltage exceeds 275Vac. Your prompt assistance in this matter would be greatly appreciated.

TEA2017 

[TomasVaverka · Accepted solution]

Dear Tino,

The customer's requirement is not completely clear to me, but maybe an option is to disable LLC operation after the PFC stops operation because of OVP on SNSBOOST.

By MTP setting:

BRs, Tomas