Basic information
True Wireless Stereo (TWS) This device offers users a wireless, compact and efficient listening experience. This device uses Bluetooth technology to connect the earbud to a source device such as a smartphone, providing uninterrupted audio without the need for cumbersome cables. This TWS device works on Bluetooth version V5.3, which is known for its low latency, better connection stability and lower power consumption than the previous version. The required input voltage for this device is 5V, with a current rating of 1-3A, ensuring fast and stable charging.
The device's charging port is a micro USB, a widely used standard for charging small electronic devices. With a standby time of up to 480 hours, this device offers extended periods of inactivity without the need for frequent recharging. This earbud is powered by a 30mAh battery, while the case that stores and charges the earbuds houses a significantly larger 1200mAh battery. This allows for multiple charges of the earbuds, ensuring continuous use over long periods.
The internal circuitry of this TWS device is crucial in managing power distribution, signal conversion and charging functionality. The board number for this circuit is XYT-T62C, a unique identifier for the circuit design used in the device. Notably, the device has a 7-segment display (6 pins), which is probably used to display essential information such as battery level or charging status. The circuit contains a total of three integrated circuits (ICs), responsible for specific functions within the device.
Power IC
Power IC plays an important role in this TWS device. This IC (IP5403), labelled with specification number 234400DA, handles power-related functions in this device. The IP5403 is an 8-pin IC designed to handle multiple power management functions, which are critical for the efficient operation of a TWS device.
One of the primary duties of this IC is to control the charging of the earbuds. Given the small size of the earbuds and their limited battery capacity (30mAh), this task requires precise voltage and current control. The Power IC ensures that the earpiece's battery is charged safely and efficiently without overloading it, preventing damage over time. Another important role of this power IC is to manage the charging of the power bank (case battery). With a much larger capacity of 1200mAh, the case saves significant energy to charge the earbuds multiple times. The IP5403 distributes power between the case and the earbuds.
This power ICT handles the overall power control of the entire circuit. This IC ensures that all components are supplied with the appropriate voltage required for proper functioning. These include a 7-segment display, managing power sent to other ICs and components, and ensuring smooth operation without overheating or power spikes. By managing multiple power sources and managing their outputs, the IP5403 plays a critical role in the stability and efficiency of TWS devices.
Analogue digital converter (ADC) IC
The second significant IC in the circuit is the analogue digital converter (ADC), which converts the analogue signal into digital data that is processed by the device's internal system. Although the specific IC number for this component is not provided, it is a 16-pin IC designed to handle signal conversion.
In this TWS device, the ADC primarily converts the analogue signals generated by the charging process into digital signals that can be interpreted and displayed. For example, as the device charges, the analogue voltage levels must be converted to a readable format for the 7-segment display. This display shows the current charging voltage, allowing users to monitor the charging status and ensure that the device is charging properly.
Charging
IC Number: L120
Battery Charging Voltage: 4.2-5Volt
Charging Time: 30-40Minit
EarBuds Charging Time Glow LED Colour: Green
Charging Time Load Ampere: 0.35A
Charging Time Load Voltage: 4.77 Volt
Charging and boosting coil
The charging mechanism of this TWS device is centred around both the earbuds and the case, ensuring efficient power delivery for extended use. This TWS case has a 1000mAh battery that provides enough power to charge the earbuds multiple times.
Charging takes place at a voltage between 4.2 and 5 volts and the charging time for the entire case is around 30-40 minutes. At this time, the power management system, controlled by L120 and IP5403 IC, ensures that the right amount of current (0.35A) and voltage (4.77V) is supplied to the battery. The green LED light indicates that the earbuds are charging and gives users a clear signal that the charging process is in progress.
An important component of this charging system is the boost coil. This coil acts to raise the voltage to a level that can be sent to the USB port. The Boost Coil enables the device to act as a power bank, allowing users to charge other earbuds such as mobile phones using the energy stored in the TWS case. By increasing the voltage, the coil ensures that the power transferred is sufficient to effectively charge external devices.
Frequently Asked Questions (FAQs)
What are the controls for TWS earbuds?
1. It should be used so that water is not blocked. 2. It should be well stuck in the ear so that it does not fall down, there is a possibility of breaking the earpods. 3. Care must be taken not to overcharge
What are the Circuit parts of TWS earbuds?
battery, power IC, charging IC, ADC IC, USB connector, 7-segment display.
What is the on voltage of TWS?
Charging Voltage 4.2-5volt , Battery Voltage 3.9-4.4volt.
Earbuds Battery Voltage?
Charging voltage 3.9-4.2 volt, battery voltage 3.3-3.9volt.
How do TWS earbuds work?
Very simple in working principle. A total of 2 are AirPods/Earbuds headphones, 2 are equipped with Bluetooth modules and programmed in IC, one will be connected with the other, and one is equipped with a touch sensor. Touching the sensor turns Bluetooth on and off and calls can be controlled.
What is the load voltage during AirPods/Earbuds charging?
4.77 voltage.
What is the name of the power IC of the Earbuds/Airpods?
IP5403 - 234400DA
What is the name of the Charging IC of the Earbuds/Airpods?
L120
This Is Load Voltage During Earbuds Charging?
The load voltage when charging TWS earbuds is 4.77V, which is close to the charging voltage range, ensuring efficient charging.
What Is The Power IC of Earbuds?
The power IC is IP5403 - 234400DA, responsible for managing the power distribution within the TWS earbuds.
What is The Charging IC of Earbuds?v
The charging IC is L120, responsible for regulating the charging current and managing the charging indicators.
What is the Bluetooth version used in this TWS device, and what are its advantages?
This TWS device uses Bluetooth version V5.3. The advantages of Bluetooth V5.3 include lower latency, better connection stability, and lower power consumption compared to earlier versions. This ensures a seamless wireless experience and more efficient battery use in both the earbuds and the case.
What is the function of the Power IC in the TWS circuit?
The Power IC, specifically the IP5403 - 234400DA, is responsible for managing power distribution in the device. It controls the charging of both the earbuds and the case, ensuring that each component receives the correct amount of voltage and current. It also manages overall circuit power, preventing overheating and power spikes.
How does the Analog Digital Converter (ADC) IC contribute to the device's functionality?
The ADC IC converts analogue signals, such as voltage levels during charging, into digital signals that the device can display on the 7-segment display. This conversion allows users to monitor the current charging voltage, ensuring that the device is charging properly and providing real-time feedback.
What is the battery capacity of the earbuds and the charging case in this TWS device?
The earbuds have a 30mAh battery, while the charging case has a significantly larger 1200mAh battery. This allows the case to store enough energy to charge the earbuds multiple times before needing to be recharged itself.
How does the L120 Charging IC manage the charging process?
The L120 Charging IC controls the input charge from the Micro USB port to the batteries. It ensures that the batteries in both the earbuds and the case receive the correct voltage (4.2-5V) and current (0.35A). Additionally, it triggers the LED light to indicate that charging is in progress.
What is the purpose of the boost coil in the TWS device?
The boost coil increases the voltage in the device to a level sufficient to charge external devices through the USB port. This allows the TWS case to function as a power bank, enabling users to charge other devices, such as mobile phones, using the energy stored in the TWS case.
What type of display is used in this TWS device, and what information does it show?
This TWS device uses a 7-segment display (with 6 pins), which likely shows essential information such as the current charging voltage, battery level, or charging status. This display is driven by the Analog to Digital Converter IC, which converts voltage data into a readable format.
Analogue-to-digital converter how long does it take to fully charge the earbuds and the case?
The charging time for both the earbuds and the case is approximately 30-40 minutes. During this time, the charging IC (L120) ensures that the batteries are charged safely and efficiently.
What safety features are integrated into the TWS circuit to protect the batteries?
The Power IC (IP5403) and Charging IC (L120) work together to regulate the voltage and current, preventing overcharging and overheating. The precise control over power distribution ensures that the batteries are not overloaded, which protects the device from damage and extends battery life.
What are the key specifications for input voltage and charging current in this TWS device?
The input voltage for this TWS device is 5V with a current rating of 1-3A, ensuring stable and fast charging. During the charging process, the load current is 0.35A, and the load voltage is 4.77V. This helps maintain efficient charging for both the earbuds and the case.