Overview: In wireless battery charging and wireless power transfer systems, power is transferred by electromagnetic induction between a transmitting pad or dongle (Tx) and the receiver device (Rx), such as a smartphone, smartwatch, robot cleaner, and other industrial tools. Some of the international standards surrounding wireless power include the Qi and Ki wireless charging standards from Wireless Power Consortium (WPC), and NFC charging. Single- or multiple-coil wireless charging solutions offer greater spatial freedom, true water and dust proofing, opportunities for contactless designs, and other benefits.
Industrial wireless power transfer (up to 300W)
Wireless charging and wireless power transfer offer true water and dust proofing, contactless operation, and free rotation in various industrial systems, such as auto-navigation vehicles, e-bikes, factory automation, drones, etc.
View application Ki wireless power transfer (up to 2.2kW)
The Ki standard from the Wireless Power Consortium (WPC) for safe, smart, and convenient wireless power transfer in kitchen applications supports multiple kinds of home appliances up to 2.2 kW.
View application NFC wireless charging (up to 1W)
Near Field Communication (NFC) technology can be leveraged for wireless battery charging with power transfer capabilities up to 1 watt. Low-power NFC wireless charging technology is suitable for charging small devices such as wearables, IoT devices,
View application Qi compatible wireless charging (up to 100W)
In wireless battery charging and wireless power transfer systems, power is transferred by electromagnetic induction between a transmitting pad or dongle (Tx) and the receiver device (Rx), such as a smartphone, smartwatch, robot cleaner, and other ind
View application Key challenges
- Achieving high power levels and efficiency comparable to wired power transfer.
- Consistency in different device orientations and in the presence of foreign objects
- Human safety and protection from damage to nearby objects
- High interoperability between various Tx and Rx products
- Compact and cost-effective designs with fast time-to-market.
Our products and solutions
As one of the world's leading suppliers of power management solutions, ST wireless battery charger ICs cover all major standards and technologies across a complete portfolio of transmitter and receiver chipsets. We provide the best-in-class Tx and Rx turnkey solutions for multiple applications, based on proven, highly integrated wireless power SoCs, as well as a comprehensive portfolio of associated devices, including power MOSFETs, secure microcontrollers, protection devices, and more.
Recommended documentation
- White paper: Why Qi charging is becoming more secure, convenient, and effective (White paper: Why Qi charging is becoming more secure, convenient, and effective - STMicroelectronics)
- Blog: STSAFE-V100-Qi: 3 things to look for in secure solutions for WPC Qi wireless charging in cars (STSAFE-V100-Qi: 3 things to look for in secure solutions for WPC Qi wireless charging in cars)
