getting power from USB during power-on

[Valentin Tihomirov]

The spec requires no more than 100mA until device is configured. Then it
allows to consume up to 500mA. My device consumes 200mA. However, the
capasitors (big ones filtering power line) are charging at power on
consuming big currents. Should I do limit the current and how can I do that?
Can it be an inductor?

 

[Marc Reinig]

The spec calls for presenting no more than 10 uF as a capacitive load. If
you are going to limit the current, use a resistor.

Marc Reinig
System Solutions


You should limit your

 

[Jim Thompson]

The spec calls for presenting no more than 10 uF as a capacitive load. If
you are going to limit the current, use a resistor.

Marc Reinig
System Solutions


You should limit your

Use a series R, then switch in a power MOSFET when capacitors are
charged and device has been configured.

...Jim Thompson