Infineon supports safe wireless charging
Optiga Unveils Trust Charge Family
Suitable for Qi 1.3 chargers supporting up to 15W


Inductive wireless charging devices, prioritizing convenience, are rapidly becoming widespread. However, uncertified chargers can not only affect the device's battery life, but in the worst case, can also harm the user.

On the 17th, Infineon Technologies unveiled the OPTIGA™ Trust Charge family, an embedded security solution for secure wireless charging.

According to Strategy Analytics' global wireless charger trends, approximately 465 million Qi devices were shipped in 2019, a 27% increase from 2018. Smartphones accounted for the largest share, but the share of wearable devices continues to grow.

The Optiga Trust Charge supports the Wireless Power Consortium (WPC) Qi 1.3 wireless charging standard and is suitable for chargers that support charging voltages up to 15W.

The Qi 1.3 standard mandates strong cryptographic authentication for wireless chargers. Wireless chargers complying with the Qi 1.3 standard must prove to the device they are charging that they are Qi 1.3 certified. Only after verification is completed can the charger charge the device at full power.

Infineon recommends at least EAL4+ certification for hardware used to store keys and certificates. Protection Profiles PP0035 and PP0084 can be used as part of the assessment.

The Optiga Trust Charge is a turnkey solution that supports full system integration and includes embedded software, host software, development boards, reference boards, and related documentation.

Infineon embeds WPC-compliant certificates and keys into security chips at its security-certified production facilities. Therefore, charger manufacturers do not need to make additional investments in security infrastructure.

The Optiga Trust Charge, available in a USON10-2 package (3 mm × 3 mm), has an operating temperature range of -40°C to 105°C and is currently sampling. Automotive applications are planned for early 2021.