I got a DRV8312EVM base board with a F2806x ISO controlCARD. When I give power supply to both boards for a while, the U3(DCH010505S-isolated DC/DC converter) and U4(ISO1050DUB-isolated CAN transceiver) on DRV8312EVM turn hot (must above 45 Celsius), and then the MCU on F2806x ISO controlCARD will become a little hot later.
Is that normal? I searched the U3(DCH010505S) datasheet, it seems the temperature when the chip working is around 85 Celsius.
But why U4 and F28068 MCU are also hot? Is there anyone can give me any clue? Thanks in advance.