My device needs 1.5A at 5V from a USBC connector. I already have 5.1k resistors in place on both CC1 and CC2 and a fuse rated for 1.5A. However, I have read on here in another thread that apparently some USBC supplies do limit the current to 500mA when the UFP does not actually negotiate. Is this true? Is there a way I could perhaps tie D+ and D- to always get the maximum the supply can output?
The reason I am asking this is that I also measure the voltage on CC1 and CC2 and will adapt the consumption, but if the DFP's pull-ups tell me it's capable of 1.5A but it still limits the supply to 500mA, my device won't know it and will run out of juice.