Advantages of wireless charging convenience and durability
Even larger in mobility-dependent applications
C2000 MCU, providing customized SW, HW, and FW


Wireless power transfer (WPT) generally refers to a technology that transmits power without wires to recharge batteries.

Although Nikola Tesla foreshadowed the era of wireless communication by establishing the concept of WPT, it was only recently that the ability to charge batteries without a physical connection was widely introduced, even after entering the smartphone era.

Wireless power transmission technology is being rapidly adopted in various industrial, medical, consumer, and automotive applications.

In particular, as the autonomy of applications increases, the advantages of wireless charging—convenience (no plugs or special connectors required) and robustness (since there are no contact points where failure can occur, the product can be completely sealed, allowing it to be used in harsher environments)—are even greater in applications that rely on mobility.

KNOWMAX, a Taiwanese specialist in wireless power solutions, uses TI's C2000 real-time MCUs, specifically the Piccolo F2803x, along with its own patented technology to provide customized software for customersUh, we provide firmware and hardware solutions. These solutions are primarily installed in end applications such as transmitters for large charging stations for tablets and power banks, and receivers inside tablets.

Tank Huang, Project Manager at Nomex Technology, stated, “TI’s C2000 MCU provides high-resolution Pulse Width Modulation (PWM) capable of precise control of power stages, as well as the flexibility required to adapt systems to various markets.”

Nomex Technology focuses on 15W wireless power solutions. While many low-cost 5- to 10W wireless power products are available on the market, there are actually very few products that can support both a 15W wireless power transmitter and a 15W wireless power receiver, such as the C2000 MCU.

To allow customers to spend more time improving their own products, Nomex helps integrate solutions with the receiver's battery. Using Nomex products makes it much easier to integrate additional features than with fixed-function modules.

For example, one of Nomex's customers decided to manufacture a 150W charging station capable of charging up to 10 devices simultaneously. Nomex collaborated with the customer to develop a customized solution and helped it pass FCC (Federal Communications Commission) and UL (Underwriters Laboratories) certifications.

At higher power levels, wireless power solutions are expected to be used in robots, industrial utilities, warehouse vehicles, electric vehicles, heavy-duty vehicles, and construction vehicles. As IIoT continues to evolve and grow, an increasing number of devices will integrate wireless power capabilities. IHS projected that the IoT environment will consist of approximately 75 billion connected objects by 2025.

Battery-powered applications range from simple low-power inductive types used in personal electronics to complex high-power resonant types used in dynamic and autonomous applications. With the vision to make these applications easier and more robust, there is no doubt that WPT systems will become more widely adopted.

In high-power applications where efficiency is more critical, the C2000 MCU provides differentiated capabilities to companies like Nomex in signal sensing, processing, flexible high-resolution PWM control, and system protection mechanisms for high-frequency inverters.

For developers worldwide, the opportunity to develop WPT applications is still far off. However, we must thoroughly prepare for the wireless era, which has suddenly arrived due to the exponential growth of IIoT.