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Microchip supports Qi 1.3 wireless charging with security sub-system

The Wireless Power Consortium (WPC) has released the Qi 1.3 wireless charging standard which has an extended power profile for wireless charging power transmitters. In response to the demand for high security silicon authentication devices, Microchip Technology has introduced the industrial grade TrustFlex ECC608 and the automotive grade Trust Anchor TA100, together with secure key provisioning services for Qi 1.3 power transmitters.  

The Qi 1.3 specification mandates the addition of a secure storage subsystem with secure key provisioning including X.509 certificates to cryptographically verify the source and quality of the certified power transmitter. When a receiver, in a mobile phone, for example, is placed on a Qi 1.3 power transmitter, it may initially accept a 5W charge or no charge at all. After a successful X.509-based ECC authentication proving the charger is an approved device and will do no harm, the phone will accept a 15W charge to significantly reduce charging time.

Microchip is a WPC licensed manufacturing Certificate Authority (CA), offering pre-configured secure storage subsystems that reduce complexity and development time, but also lowering the technical barrier of entry by handling the entire key ceremony with the WPC root certificate authority on behalf of its customers. It provides a complete certified reference design including application microcontroller, Qi 1.3 software stack, secure storage subsystems with supporting crypto library and provisioning services for both automotive and consumer applications.

The Microchip ECC608 TrustFLEX is supported by the CryptoAuth Trust Platform Development Kit (DM320118).

The TA100 will require the TA100 8-pin SOIC socket board (AC164166) or TA100 24-VQFN socket board (EV39Y17A) to plug into the CryptoAuth Trust Platform Development kit.

The company also offers the Trust Platform Design Suite software development tool for secure storage subsystems and a certified WPC Qi1.3 reference design. 

Both the ECC608-TFLXWPCS and the ECC608-TFLXWPCU are available now. The TA100 is available in 10,000-unit quantities for SOIC8 and VQFN24.

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