Supply required 5V/2A over micro USB

Hey guys, quick question. I have a portable tablet charger capable of supplying 5V/2A over USB. Can I use this to power the board? Or is the micro-USB limited in what I can supply to it? Will I be able to power both the board itself and a USB WiFi dongle safely?

Yes, but understand, you will only get 500ma out of it before the PMIC shuts down depending on where the SW is currently set.I actually do not know on the new image. Best case it 800mA.

Either way, you will not get 2A.

Gerald

I still have it do the "i2c mw 0x24 1 0x3e;" in u-boot during bootup..
So whatever that sets up the PMIC for.

Regards,

Yes, but understand, you will only get 500ma out of it before the PMIC
shuts
down depending on where the SW is currently set.I actually do not know
on
the new image. Best case it 800mA.

I still have it do the "i2c mw 0x24 1 0x3e;" in u-boot during bootup..
So whatever that sets up the PMIC for.

If I¹m reading the data sheet correctly,

IAC current limit 2,500mA
IUSB current limit 1,300mA

0x3F would make iUSB current limit 1,800mA

Regards,
John

I think that is the 800mA setting in the PMIC over current circuitry.

Gerald

13000mA might be pushing it.

Gerald

13000mA might be pushing it.

You mean 1,300mA?

http://www.ti.com/lit/ds/symlink/tps65217c.pdf

Page 43

Regards,
John

Yes. 1.3A is what I meant. So, 1.3A may still be pushing it.

Gerald