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I used cy7c65640 made a hub2.0,but it's didn't work as I hope!
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I used cy7c65640 made a hub2.0,but it's didn't work as I hope!

aking posted on 15 Dec 2011 7:20 PM PST

1 Forum Post

I used cy7c65640 made a hub2.0,but it's didn't work as I hope! when I connect HUB2.0 with PC,the PC can find the hub2.0,but when I connect a USB flash disk on the HUB2.0's downstream port,the chip of hub2.0 will be very hot ,what's wrong with it,and who can help me ?please help me ,and connect me!




Re: I used cy7c65640 made a hub2.0,but it's didn't work as I hope!

aasi posted on 16 Dec 2011 07:01 AM PST
Cypress Employee
1090 Forum Posts

CY7C65640A has a power consumption of 460mA. So without proper heat sinking I would expect it to be hot


Following are three options you can consider


1. Follow http://www.cypress.com/?docID=30851 and implement more heat sinking


2. If bandwidth is not a constraint then use http://www.cypress.com/?docID=26588


3. If bandwidth and power are constraints then move to http://www.cypress.com/?docID=30511


Cheers,


Anand






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