nok9 recently participated in the Wireless Power Consortium (WPC) meeting in Vienna. Our team was central to the primary workgroups developing version 1.2.4 of the Qi testing specification, utilizing both our BASE and CATS II testing systems in the Plugfest and IOP sessions.

Version 1.2.4 addresses several critical needs in the growth of the Qi standard, including:

  • Two simplified power profiles: the Baseline Power Profile for products up to 5W and the new Extended Power Profile, which now extends Qi’s power range to products requiring up to 15W.
  • Updated compliance tests that better verify Power Transmitters in the new Extended Power Profile.
  • A new Power Transmitter compliance test that addresses potential over-voltage issues in Power Receivers.
  • A new thermal test for 15W Power Transmitters, ensuring better product performance and greater levels of safety for consumers.
  • An extension on the maximum voltage test case highlighting better protection for devices, resulting in a significant improvement in product safety, performance and reliability.
  • Validation of the TPR#1F and TPR#7F Coils, which have solved obstacles to approving Power Transmitters with power capabilities between 5W and 15W. Prior to this, products could only be tested for applications up to 5W. Anything above that level was proprietary and not Qi-compliant.

The improvements in the test specification are designed to help product developers to detect problems earlier and reduce the risk of failure during interoperability testing. They also open up new opportunities for Qi-compliant products in higher power ranges, including kitchen applications.

Qi is evolving quickly. It’s more important now than ever to ensure that your products are compliant and forward compatible.