W5500 Heating

Question

Hello , I have used W5500 in one of my production hardware on site. Now this hardware is getting heating without any reason. I have tried same in my office and come to know that this hardware is heated even with supply. Can you suggest to avoid this heating. Regards Tanmay Soni

Eugeny · Answer

W5x00 heats in any way, but it should NOT heat if you did not power it on. Tanmay_Soni: without any reason If it does not communicate it does not mean chip not checking what is on the wire. So it functions and consumes power, unless you put PHY into power save mode.

Preshith Varghese · Answer

I encountered a heat-related problem with the W5500 chip, where it stops functioning after approximately 5 minutes of operation. To resolve the issue, we implemented a cooling fan, which successfully eliminated the problem. However, our product does not have any built-in provision for installing a fan. Attached is the circuit diagram for reference. I would appreciate your suggestions on how to address this situation. image(1)1239×652 121 KB

Alan · Answer

Hello, I checked the circuit and found something different from the reference circuit. You tied the CT and did GND treatment, but in the case of TX, you need to connect the CT to 3.3V. The offset value may be different, which may cause problems. Please refer to the link below. W5500 Reference Schematics