Realme was founded in May 2018. It focuses on production of smartphones and IoT products and attracts a number of young consumers with its “dare to surpass” brand attitude and high cost-performance products. The shipments of it have soared this year and increase the fastest in consecutive four quarters as well as rank the seventh in the world.

In the field of real wireless headphones, realme has also been introducing TWS headphone products and has received much attention in market. Http://www.52audio.com/ has recently disassembled the first real wireless noise-cancelling headphone of realme, realme Buds Air Pro. After disassembling, it was found that the internal circuit in it is verysimple and uses Siyuan semiconductor SY8803 TWS charging box SoC solution, which can achieve the complete functions of the charging box with a MCU. let’s take a look at it.

Siyuan Semiconductor SY8803 TWS Charging Box SoC Solution Enters realme Supply Chain!-askpower

Realme Buds Air Pro real wireless headphone is the first TWS headphone that supports active noise reduction. The official states that maximal noise reduction degree can reach 35dB. The apperance of the headphone and charging box retains the previous design style of realme, that is rounded and lightweight, and the quality of it is better than what it used to be.

Siyuan Semiconductor SY8803 TWS Charging Box SoC Solution Enters realme Supply Chain!-askpower

The internal structure of the charging box show that the mainboard circuit is fixed to the bottom bracket.

Siyuan Semiconductor SY8803 TWS Charging Box SoC Solution Enters realme Supply Chain!-askpower

The circuit on one side of the mainboard may be MCU related circuit of the charging box, and there is an over-voltage and over-current  protection IC at the lower left corner of Type-C interface.

Siyuan Semiconductor SY8803 TWS Charging Box SoC Solution Enters realme Supply Chain!-askpower

The circuit on the other side of the mainboard is mainly Siyuan semiconductor SY8803 high-performance SoC chip, and the right is a reserved wireless charging reception related circuit.

Siyuan Semiconductor SY8803 TWS Charging Box SoC Solution Enters realme Supply Chain!-askpower

Siyuan semiconductor SY8803 is a high-performance SoC chip that is designed for charging box of smart TWS headphones and is packed with QFN-16.

Siyuan semiconductor SY8803 integrates I2C communication control function on the basis of a very safe and reliable design. (the withstand voltage is up to 28v, there are charging and discharging over-voltage, over-current, over-temperature, short circuit protection, etc.) MCU of the system can identify and configure functions in the power supply and charging and discharging management parameters of the battery through I2C interface, and can easily achieve some functions, such as NTC protection, segmented current regulation of battery,  incoming inspection and pre-delivery inspection of TWS headphones, power output, and automatic opening.

Siyuan semiconductor SY8803 chip has been approved by the latest IEC62368-1 safety regulations, thus it provides a reliable security for users to achieve high-quality product design.

Siyuan Semiconductor SY8803 TWS Charging Box SoC Solution Enters realme Supply Chain!-askpower

Http://www.52audio.com/ has disassembled and researched more than     400  popular audio products with the tracking and analysis of more than 3 years. It is found that Siyuan semiconductor provides solutions for TWS real wireless headphones with lithium battery charging and charging box.    The products have a good performance and reliability and have successfully entered OPPO, Xiaomi, Baidu, 1MORE, 233621, TRANSSION , Amazon and other famous brands.