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Wireless charging technology has become a major focus in the electronics industry, with extensive research and practical implementation. While it hasn't yet reached mass consumer adoption, significant progress has been made in the consumer electronics sector. Many flagship smartphones now incorporate this advanced feature, including models like the Samsung Galaxy S6, Sony Xperia Z3+, Google Nexus 6, and Nokia Lumia 930.
One of the key advantages of wireless power is its ability to eliminate physical connectors, which enhances device durability and water resistance, making maintenance easier and improving the overall user experience. Additionally, it offers greater security by reducing touch points and enables power and data transmission across complex interfaces. Texas Instruments (TI) is a leading innovator in wireless power solutions, offering a wide range of products tailored for wearables, smartphones, automotive, industrial, and medical applications.
TI recently introduced the industry's first fully integrated 10W wireless charging solution, featuring both receivers and transmitters that are more efficient and enable faster, more reliable charging without the need for physical connectors. The bq51025 and bq500215 are currently in mass production and support waterproof, dustproof, and compact designs. They can charge 1S and 2S lithium-ion batteries efficiently without overheating. Moreover, the system is compatible with any 5W Qi-compliant product, enhancing flexibility in consumer electronics.
The bq51025 receiver supports programmable output voltages ranging from 4.5V to 10V and, when paired with the bq500215 transmitter, achieves up to 84% charging efficiency at 10W, significantly improving thermal performance. This compact receiver (3.60 mm × 2.89 mm) is ideal for a variety of portable devices, such as retail scanners, medical diagnostics tools, tablets, and ultrabooks.
The bq500215 transmitter is a dedicated 10W digital controller that works with 5W Qi receivers. It features an enhanced foreign object detection (FOD) system to identify potential hazards before delivering power, ensuring safety and reliability.
Key benefits of the bq51025/bq500215 include:
- Up to 84% system efficiency at 10W, enabling fast charging for 1S and 2S battery-powered devices.
- Qi-compliant communication ensures compatibility with all Qi-certified 5W devices.
- I2C interface improves alignment and allows proprietary data exchange between receiver and transmitter.
- Future compatibility with TI’s mid-level power Qi standard components.
For development, TI provides evaluation boards like the bq51025EVM-649 for testing the receiver and the bq500215EVM-648 for evaluating the transmitter, helping designers accelerate their time-to-market.
TI continues to lead in wireless power innovation, supporting not only mobile phones and tablets but also embedded and standalone charging systems in automotive and industrial environments. As a member of the Wireless Power Consortium (WPC), A4WP, and PMA, TI remains at the forefront of wireless charging standards and solutions.