MPQ4242 -with use USB DATA

DC-DC Power Converters
1

Hello team,

I would like to use the MQP4242 in my product, which has a 60W USB Type-C power source. The USB Type-C connector on my product allows the host PC to be powered at 20V-3A. Furthermore, the host PC’s USB 2.0 data link would not be connected to the MQP4242, but to a USB HUB. The USB data from the host PC is a downstream data stream on the HUB.

Is it possible to use the MQP4242 in this configuration, and is there any specific configuration to be done in the component’s registers?

schema-mqp4242
schema-mqp4242923×591 29 KB

Thanks for your help!

2

Hello Nicholas, welcome to the MPS Forums!

The MPQ4242 is designed to act as a PD source and doesn’t require USB data lines to function for just for power negotiation alone. The USB Type-C connector on the diagram that you provided correctly connects CC and VBUS, while the USB2 and USB3 lines go the shown hub, which aligns with the role of the MPQ4242.

However, you would need to check the following:

  • Configure the PD Profiles via I2C. You may want to disable any sink functions (if not needed) and perhaps disabling/ignoring BC1.2/USB data role detection (if also unused).
  • Ensure that the 2:1 data mux handles the CC flip well
  • Confirm that the hub supports data routing independently from the PD controller.

Let me know if there are any more in-depth questions here.

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