USB-C PD in China-Sourced Consumer Electronics
1 resources tagged with "Usb C Pd"
USB-C Power Delivery (PD) is now the default charging input for portable consumer electronics like Bluetooth speakers, where the PD controller negotiates voltage with the charger over the CC lines. Sourcing it from China, the risk is a PD implementation that negotiates incorrectly or skips overcurrent protection, which surfaces as units that fail charging or trip FCC/CE EMC. On a 5,000-unit speaker run, catching this at factory audit and 3-stage inspection is far cheaper than a field recall.
When PD charging is in your product, confirm the PD controller and protection IC are genuine, the negotiation profiles match your charger range, and EMC passes with the charger attached. We test PD handshake and charge behavior on inspection samples.
Cases (1)
FAQ
What goes wrong with USB-C PD in cheap China-made electronics?
Faulty CC-line negotiation, missing overcurrent/overvoltage protection, and counterfeit PD controllers. These cause intermittent charging and can fail EMC, so they should be caught at inspection, not after shipping.
Does adding USB-C PD affect FCC/CE certification?
Yes. The switching in a PD path is an EMC source, so testing must include the charging condition. Verifying it during the 5,000-unit speaker project kept the defect rate near 0.4%.
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