View full article: https://www.allaboutcircuits.com/new-industry-products/stmicro-stwlc03-dual-mode-qi-pma-wireless-power-receiver-featured-product-s/

STMicroelectronics' STWLC03 is a high-efficiency wireless power receiver IC that supports both Qi and PMA protocols. Along with the wireless power receiver, it integrates a programmable buck converter and an embedded microcontroller, which allows for a very wide range of customization and supporting different standards.

Qi and PMA are fundamentally similar, but they use different protocols. Both use magnetic induction and both operate in the hundreds of kilohertz, so the receiving coils and hardware can easily be designed to cover frequency ranges for both standards. However, despite these similarities, the messaging protocols are different, so if you use mismatched transmitters and receivers power will not be delivered to the receiver because they can't communicate. For more information, as well as all the latest All About Circuits projects and articles, visit the official website at http://www.allaboutcircuits.com/

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