The Left Dot In-the-Ear Hearing Aid is a 24-channel audio processing hearing aid for people with severe hearing impairment below 80dB. It adopts a design similar to TWS earphones, and is equipped with a charging case to provide the charging function of the storage case. It is also equipped with AI environmental noise cancellation technology, which automatically matches the environmental status and clearly records human voices. It also automatically suppresses sudden howls and protects the ears at all times. Left-point in-the-ear hearing aids can be fitted at home without leaving the house, which is significantly more convenient.
Recently, I love audio network disassembled the left point in-ear hearing aid and found that its charging case is equipped with SY7100 and SY8815 two charging and discharging chips from Siyuan Semiconductor. SY7100 is a wireless charging receiver chip that conforms to the WPC Qi protocol, and SY8815 is a solution designed for the Bluetooth headset charging case, which integrates a charging module and a discharge module.
In appearance, the left dot in-the-ear hearing aid is more like a pair of ordinary TWS earphones. The charging case has a white body, a front indicator, and a USB-C port at the bottom, without other extra decorations. The hearing aid body is similar to wireless headphones, and it is also a simple lacquered white colorway. If there is a difference, it is the difference in the sound holes. After removing the earbuds, the left point of the in-the-ear hearing aid has a smaller opening, and often the earphone has a larger opening.
In terms of function, the 24-channel left-point in-ear hearing aid has a built-in moving iron horn, which provides higher sound resolution and better vocal performance. It can adjust the volume of four different levels to suit people with varying degrees of hearing loss. On the app, you can also adjust the noise cancellation mode of the hearing aid, and there are three modes to choose from: normal, noise reduction and strong noise reduction. In addition, it also provides convenient at-home fitting services, which is convenient for the elderly and solves the problem of inconvenience of going out for fitting.
After the dismantling of the audio network, it was found that the left point in-the-ear hearing aid has a built-in Bluetooth headset chip solution with a patented hearing aid/hearing aid algorithm, a moving iron unit, a steel-shell button battery and other devices. The charging box integrates a wireless charging coil and a 400mAh lithium battery, and its motherboard is equipped with a SY7100 wireless charging receiving chip from Siyuan Semiconductor and a solution chip designed by the SY8815 Bluetooth headset charging case.
Siyuan SY7100
Siyuan Semiconductor SY7100 is a high-efficiency, fully integrated WPC Qi V1.24 compliant wireless charging receiver IC, supporting a maximum output power of 5W, built-in low-impedance synchronous rectifier, with an efficiency of up to 94%, integrated LDO, adjustable output voltage. The SY7100 also includes a digital controller that calculates the power received by the mobile device. The controller transmits this information to the transmitter for foreign object detection (FOD) and improved wireless charging.
Inside the SY7100 is an 8-bit MCU core, 256 bytes of RAM, and 8K bytes of ROM storage for repeatable rewritable. The integrated multi-channel 12-bit SAR ADC can be used for application functions such as voltage, current, and NTC temperature sensing. In addition, the SY7100's internal timer, UART, I2C controller, and PWM functions facilitate the use of other peripheral device designs.
SY7100 with the SY880X/881X/882X series of charging bin SOC chips that have been mass-produced, Siyuan Semiconductor provides customers with a complete TWS earphone charging case system solution with wireless charging function, simplifying the complexity of customer project design and development, and improving the efficiency from project development to product launch!
Siyuan SY8815
Siyuan Semiconductor's SY8815 Bluetooth headset charging bin solution is specially designed for Bluetooth headset bin, with integrated charging module and discharge module inside. The SY8815 charge current is externally adjustable, and the discharge module integrates two output current limit switches, providing independent load presence detection and load insertion detection, and supporting output current detection.
SY8815 discharge enable control, the MCU can directly control the discharge function of the chip through EN. SY8815 integrates a single-line status code output, which is convenient for the chip to report the chip status to the MCU. SY8815 is very suitable for the design of Bluetooth headset charging case, greatly simplifying the peripheral circuits and components, and providing a simple and easy-to-use solution for the application of Bluetooth headset charging case.
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I love the audio network summary
As a 24-channel hearing aid product with about 1,000 yuan, the left-point in-ear hearing aid can help people with hearing impairment to hear again. Similar to the design of TWS earphones, it is fashionable and simple to wear, and will not cause psychological burden. The charging case not only supports wired charging, but also supports wireless charging, and has a maximum charging speed of 5W, making daily use more convenient. The highly integrated charging bin chip simplifies the peripheral circuitry and components, making it a simpler and easier to use solution.
Shenzhen Siyuan Semiconductor Co., Ltd. was established in 2011 and is a national high-tech enterprise. The company focuses on the innovative design of analog-digital mixed-signal SoC chips, and is committed to providing leading power management system-level chip solutions for smart wearables, data centers, energy storage systems, new energy vehicles and other industries, including power management SoC chips, lithium battery charging management chips, fuel gauge chips, power management PMICs, high-voltage DC-DC conversion chips, low-voltage and high-current multi-phase DC-DC, wireless charging chips, and multi-cell battery AFE chips.
In the field of consumer electronics, Siyuan Semiconductor has successively ranked first in the market share of mobile power supply and TWS Bluetooth headset charging warehouse SoC chips, and has become a leading enterprise in the industry. Cooperative customers include Xiaomi, OPPO, OnePlus, realme, Transsion, Meizu, 1MORE, Baidu, NetEase, Edifier, JBL, Harman, Motorola and other well-known brands at home and abroad to form strategic cooperation to serve hundreds of millions of consumers around the world.