Hi Team,
The heating of the chip is more than 50 ℃ without load, and the current is 400mA. The temperature of the chip has reached more than 70 ℃. Please help to see the peripheral design and parameter matching. Thank you!
Beat Regards,
Tom Liu
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Hi Team,
The heating of the chip is more than 50 ℃ without load, and the current is 400mA. The temperature of the chip has reached more than 70 ℃. Please help to see the peripheral design and parameter matching. Thank you!
Beat Regards,
Tom Liu
Hi Tom,
Please check your design using the LM5117 quickstart calculator, in particular the MOSFET Qg and the inductor core loss. The DC current from VCC related to gate drive is Qg*Fsw for each FET.
Regards,
Tim