I am building a companion board with the Compute Module, USB & ethernet capability and running it 24/7 is part of the requirement. The standard practice would follow and use the same USB to Ethernet controller reference design from standard Pi Model A/B, LAN9512 or LAN9514 from Microchip.
As mentioned here Raspberry pi too hot ? Let’s do something about it !, I too find this chip is relatively VERY HOT (60'C)!
My operating environment involved running it 24/7 in a closed chassis where ventilation is usually bad. Fire hazard or chip burnt due to overheating is the last thing I want to see on my product.
My question is, is there any alternative ICs out there which dissipates much lower heat with the same functionality (USB host + Ethernet)? OR is there any 2 separate chip (USB host & Ethernet) which can archive the same end goal? I have no idea why Raspberry Pi Foundation chooses this chip in the first place, is so hot and bad for long-term operation
*Putting a small fan or bigger heatsink (I already had heatsink installed on top on both BCM2835 and LAN9512) is not the solution I am looking for, I like to seek a more energy efficient engineering solution