LMG3410-HB-EVM：Switch temperature is too high

Hi,

Could you please let us know what your drain current is. 

Thanks.

Best,

Adhvaidh

0.6Arms

The circuit is a totem-pole PFC. With either natural rectification or full-wave rectification, the input voltage is 50 Vrms and the input current is 2.2 A. Without the auxiliary power supply, the upper switch of the low-frequency leg is hotter than the lower switch, but the temperature difference between the high-frequency leg’s upper and lower switches is less than 1°C. With the auxiliary power supply on, the low-frequency leg shows the same behavior, but the temperature difference in the high-frequency leg grows to 4°C and the entire upper switch’s temperature keeps rising.

Hi,

Can you please let me know what your operating conditions are?

Thanks.

Best,

Adhvaidh