The USB specification states that a device or HUB must first communicate with the USB host to put the host in high power mode.
For my application I want to be able to at least use USB 2.0 high power (4V to 5.25V with 500mA), but I can't seem to find an IC that puts the host in high power mode.
Does anyone know an IC that can do this, and if it's needed at all?
I did find ICs like the TPS2546 and TPS3S014, where the TPS2546 has detection what the USB device should get and the TPS3S014 switches the output to off if more than 500mA is detected.
The reason I ask this is because the USB specification states that the host provides low-power current (150mA at 4V to 5.25V) at first, until enumeration has been done between the host and device or HUB.
Some applications show that they expect the host to deliver maximum current immediately, which differs from the USB specification.
