ST's consumer and automotive Qi-certified charger safety solutions help the wireless charging market develop

STMicroelectronics Supports Wireless Charging Market Development with Qi-Certified Charger Safety Solutions for Consumer and Automotive Applications

• ST’s security expertise provides Qi-certified charger authenticity verification to protect the wireless charging market and user devices

• STSAFE security module installs Qi charger certificate and security key in ST security chip factory

• Out-of-the-box security module based on Common Criteria EAL5+ certified chip

China, June 29, 2021 – STMicroelectronics (NYSE: STM), a global semiconductor leader serving a wide range of electronics applications, has enabled safe wireless charging for small electronics and mobile products with a convenient Qi-certified charger verification solution.

More and more mobile phones and wearable devices have wireless charging capabilities, which brings opportunities for innovation in wireless charging applications and brings more product value to users. For example, furniture with wireless charging functions, in-car wireless chargers that maintain a safe distance from the driver, and convenient charging stations in hospitality venues such as cafes and restaurants. Chargers must be designed reasonably to protect consumer product safety, especially in high-power fast charging situations. Chargers are awarded the Qi mark after completing testing and certification in accordance with the WPC-Qi specification.

“ST is helping the wireless charging market thrive by allowing charging power above 5 W to be increased safely only when the charger is verified to be genuine and certified with the Qi logo,” said Laurent Degauque, Marketing Director, Secure Microcontroller Division, STMicroelectronics. “Our solution complies with WPC-Qi specification V1.3 and uses ST security modules certified to Common Criteria EAL5+ and AEC-Q100 automotive standards.”

The STSAFE security module is equipped with an official Qi certificate, and the verification function uses advanced encryption technology to accurately identify the charger and accurately verify whether it is a genuine Qi certified charger.

As an official manufacturer certification authorized service provider, STMicroelectronics is authorized to calculate and sign the official Qi charger certificate containing the charger Qi-ID identification code and manufacturer code, etc. Both the STSAFE-A110 consumer-grade security module and the STSAFE-V110 automotive-grade security module are digitally certified in STMicroelectronics' internal factory, which is an out-of-the-box solution that can reduce the burden of charger manufacturers to securely load sensitive data.

STSAFE is used in millions of consumables, network equipment and secure automotive peripherals around the world to authenticate devices and protect brand products and network assets.

The STSAFE-A110 for the consumer market is available in a 4mm x 5mm SO8N or 2mm x 3mm UFDFPN8 package.

The STSAFE-V110 for the automotive market is available in a TSSOP20 package.

Technical Details

The STSAFE IC series provides common security functions and services to ensure that consumables, network equipment and automotive peripherals have complete security functions. It adopts advanced security technologies audited by independent security organizations and has passed the security standard Common Criteria EAL5+ AVA_VAN 5 certification.

The STSAFE-A110 and STSAFE-V110 components include a secure MCU and a secure operating system. The authentication function is based on ECDSA asymmetric encryption technology and an X509 certificate containing a unique serial number.

In terms of Qi product authentication, both products are pre-installed with the relevant encryption keys and the official Qi certificate corresponding to the customer's Qi charger.

The STSAFE-V110 is qualified according to the automotive standard AEC-Q100 Grade 2.

Users can also take advantage of the rich STSAFE-A110 ecosystem to accelerate product development and simplify integration of the STSAFE-A110 with application hosts, including ST's STM32* microcontroller family and devices such as the STWBC2 digital controller for wireless charging transmitters.

To speed up application development, the X-NUCLEO-SAFEA1A expansion board that comes with the STM32 Nucleo development board integrates an STSAFE-A110 chip, as well as the X-CUBE-SAFEA1 software package and the X-CUBE-SBSFU secure boot and software update expansion package.

*STM32 is a registered and/or unregistered trademark of STMicroelectronics International NV or its affiliates in the EU and/or elsewhere. In particular, STM32 is registered in the United States Patent and Trademark Office.