Alliance for Wireless Power (A4WP) Measurements (Part 1)
应用文章
One of the primary instruments used when designing and testing A4WP compliant wireless charging products is an oscilloscope. Although many of the required conformance test measurements may be relatively easy to perform, some are not-to-easy. There are many advanced oscilloscope settings and measurements that you may not be aware of that can enhance the accuracy and repeatability of A4WP oscilloscope measurements. This application note is Part 1 of a 3-part series on A4WP wireless charging measurements. This part focuses on performing ITX_COIL measurements during the power transfer state (non-beacons). Part 2 focuses on ITX_COIL measurements during the power save state (beacons), including beacon timing, and Part 3 focuses on power and efficiency measurements. Refer to Part 2 and Part 3 for additional A4WP testing information.