3 Replies Latest reply on Jun 17, 2019 5:52 AM by NiMc_4245981

    Is the capacitor on VBUS required?

    NiMc_4245981

      In the DataSheet for the CCG3 it shows a 10 μF capacitor on the VBUS line for DRP and DFP designs.  It is 1 μF for UFP.  I'm designing a DRP device and I find that when I'm sinking power, this 10 μF capacitance causes a 5 second delay if the power source is turned off and turned back on.  Can I reduce the size of this capacitor?

       

      The VBUS_DISCHARGE pin doesn't seem to be able to discharge the capacitor below 1.8 V.  The two power sources I've tested won't provide 5V until the line drops to 0.8 V.

       

      My last resort is to use a 10 kΩ resistor in parallel to the capacitor, but I would rather use a smaller capacitor.