I use lt3753 to design 30 watts dc to dc converter.
This project is perfect .
But when this converter is exposed to emc waves, sometimes the voltage output is zero.
After doing a lot of checks on the converter, I found that OC pin of the LTC3753 chip gives a reset command due to conducted or radiate EMC noise.
That is, the sum of the noise amplitude and the voltage of the sense resistor increases from the amplitude of 96mv. This causes the fault command to be issued and the pulse of the MOSFETs to be lost.
This is due to the extraction of the OC pin from inside the chip. Increased sensitivity of the OC pin. The SNR level of the chip is extremely low. But this is not the case with the LTC3765 / 3766 chip.
Please help me