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STUSB1700 not supplying more than 5V@500mA to a Samsung tablet

Ivan_
Visitor

Hi everyone,

I'm currently using an STUSB1700 as a 5V 3A power source for one of the USB ports in my project. I'm able to draw up to 2.7A with Apple devices (iPhones and iPads) on that port. Using the STUSB GUI, I can connect to the STUSB1700 via I2C and read the messages. I've looked through the datasheet for the register in the NVM but can't seem to find any that would resolve this issue. If anyone has faced the same problem and found a solution, I would greatly appreciate hearing about it. I've attached a screenshot showing what the STUSB GUI dashboard looks like when I plug in the Samsung tablet (it is written that the device is a STUSB1600A but it is a STUSB1700). For the design I've followed the recommended schematic from the datasheet, for it to advertise 5V 3A capabilities when under negotiation (RP_HIGH/RP_DEF pulled up to 5V).

Thanks in advance!

Ivan.

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