The great advantages offered by wireless charging are far from being as simple as improving the convenience of the smartphone—for example, the option of not using connectors, making the product waterproof, easy to clean, and more durable. In addition, transmission capabilities, as well as improving security in harsh environments, also provide its own set of advantages. Therefore, this technology may become more common in many applications outside the field of smart phone applications.
One of the interesting things about engineers designing wireless power supplies is that they often face technical challenges, especially when they first develop wireless power supplies. Important system requirements such as power dissipation and foreign object detection (FOD) create design challenges. The ability to achieve WPC compatibility, or just to ensure a good user experience, is largely determined by the components used, the type of coil, and the layout of the board layout.
Figure 1: 500511 Wireless Power Transmitter Controller and bq50002 Analog Front End.
By providing higher integration, up to 5% in efficiency, and reducing standby power to only 25mW (even during polling), recent advances in wireless charging technology have made it easier for designers. A new two-chip solution from Texas Instruments includes the bq500511, wireless power transmitter control, and the bq50002, an analog front end. The bq50002 integrates all analog functions into the system, including FETs, drivers, current sensing, voltage regulators, and demodulation filters. The bq500511 handles communications and WPC protocols. The advantage of using two chips is that it ensures that the digital components are in digital processing while the analog components are in analog processing - which in turn generates a cost-effective solution; this solution can be used For WPC-based, or proprietary transmitters up to 5W.
To make these products easier and faster for engineers, and to be able to get into production faster, TI has provided additional development tools. These tools include a TI Designs reference design, TIDA-00623, for the design of a small 5W wireless power transmitter, a design tool, bqStudio, which makes it easier for engineers to fine-tune and optimize the FOD in the system.
As wireless charging technology becomes more and more popular and can support new features and power levels, it is imperative for companies to provide development tools such as these, which will make it easier to integrate wireless charging technologies into different applications.
Liquid Crystal Display For Clock
Dongguan Yijia Optoelectronics Co., Ltd. , https://www.everbestlcdlcm.com