- Mon Dec 14, 2015 8:44 pm
#36446
Now that i look again, yeah, the datasheet says "the maximum regulator supply current is 100ma"
Sorry, my mistake.
lethe wrote:Timpanogos Slim wrote:The cp2102 can do it, *if it is implemented correctly. That probably comes down to how generous the power traces on the board are, and the use of appropriate bypass capacitors.
The CP2102 regulator's max. output is 100mA, the ESP's power consumption while transmitting is 130-170mA on average according to the datasheet. No amount of capacitance can compensate that for continous transmission (and you can't control how much your ESP is transmitting, since it will reply to ping requests).
Also adding large amounts of capacitance will result in a high inrush current, that may exceed USB specifications. So you should be careful about adding large amounts of capacitance to your USB port.Disappearing from the hardware manager sounds like it drew more power than the usb port was prepared to deliver, though.
The CP2102 is powered by its own regulator, so overloading that will also cause the device to brown out and drop off the bus. Either option is possible...
Now that i look again, yeah, the datasheet says "the maximum regulator supply current is 100ma"
Sorry, my mistake.
