LONDON Texas Instruments has introduced the bq500210, an IC that controls and transfers wireless power for contactless chargers compliant with the Qi standard from the Wireless Power Consortium.
The chip includes an analyzer that examines the efficiency of energy transfer and chokes back transfers as the target device becomes charged and to protect the transmitter and receivers from excessive power loss and heat. The chip also performs metal object detection to provide protection from power transfer to extraneous metal objects. It also includes overload and over-temperature protection circuitry.
It comes in a 48-pin QFN package and is priced at $4.50 in quantities of 1,000 units. It is compatible with the available bq51013 or bq51011 receivers.
This is a chip that Nicola Tesla wouldīve loved. He wanted to distribute energy through air. Wirelessly. Perhaps he was the first "Open source" advocate.
Arenīt we seeing too much wireless lately? Anyone saw Jhony Mnemonic? Lucky for the business that RF radiation hasnīt been proved to harm our bodies.
What is the range over which such wireless transfer can happen without excessive power loss to the environment? and what happens when there is intermittent interference between the charged and the charging stations?