The Soundcore Sport X20 is equipped with an 11mm dynamic driver and support Bass Up bass enhancement technology. The powerful sound quality provides stronger power for exercise. You can also create your own personalized hearing via the Soundcore APP. It supports adaptive active noise cancelling (ANC), provides deep and wide noise cancelling, and can adaptively adjust the noise cancelling mode according to the ambient noise to ensure comfortable wearing.
Soundcore Sport X20 supports AI call noise cancelling, based on a 6-microphone system and AI noise cancelling algorithm to providing clear calls. In terms of interaction, physical button is used to provide precise control while avoiding accidental touches during exercise. The single battery life is up to 12 hours (ANC=7H), and the total battery life is up to 48 hours.
We have previously teardown the Soundcore products including: Soundcore Liberty 3 Pro, Soundcore Liberty Air 2 Pro, SoundcoreLife P3, Soundcore Life Dot 2, Soundcore LIFE P2 MINI, Soundcore Liberty 2 Pro, Soundcore Liberty Air 2, Soundcore LIBERTY AIR, Soundcore Spirit Pro and Soundcore S1. Let’s take a look at the detailed teardown report of Soundcore Sport X20.
01/ Soundcore Sport X20 Charging Case Teardown
Disassemble the charging case shell and take out the charging bin structure. The bottom of the charging bin is equipped with a motherboard, battery and FPC.
The motherboard is fixed with screws and connected to the FPC via a ZIF connector.
The motherboard structure for charging earphones on the FPC is fixed with hot melt posts.
The inner structure of the cover opening button is equipped with a magnet. When the magnetic force direction changes when the button is pressed, the case lid will automatically pop open. The indicator motherboard is set inside the structure.
Remove the cover opening button structure, and the bluetooth pairing button is set on the FPC below.
Remove the screws and remove all the components fixed at the bottom of the charging bin.
Pick up the connector and separate the FPC.
The circuit on one side of the charging case motherboard.
The circuit on the other side of the charging case motherboard.
Injoinic IP5518 TWS charging case management SoC is a multifunctional power management SoC that integrates MCU, 5V boost converter, lithium battery charging management, and battery level indication – providing a complete power solution for TWS charging case. The high integration and rich functions of IP5518 require only a few peripheral devices when applied, effectively reducing the size of the overall solution and reducing BOM costs.
The IP5518 chip has a built-in 5V output, synchronous rectifier boost DC-DC. The power tube is built-in to provide a maximum output current of 300mA, and the boost efficiency is as high as 93%. The switching frequency of the DC-DC converter is 1.5MHz, which can support low-cost inductors and capacitors. The linear charging of IP5518 provides a maximum charging current of 500mA, and the maximum charging current can be flexibly configured. The built-in IC temperature and input voltage intelligently adjust the charging current function.
IP5518 can realize independent detection of TWS earbuds, and automatically enter charging mode after detecting that the earphones are placed in the charging case. The earphones automatically enter sleep mode after being fully charged, and the quiescent current can be reduced to 20uA. The full current detection accuracy of the earphones can be flexibly customized, and the full current detection accuracy is up to 1mA. IP5518 has a built-in MCU, and can flexibly customize 4/3/2/1 LEDs or 188 digital tube power display. Built-in 12-bit ADC can accurately calculate the battery power.
Power management chip peripheral power inductor.
ZIF connector connected to FPC, from OCN, model: OK-F302-13115.
Overvoltage and overcurrent protection IC with screen printing CRYyC.
OCS OCH4002 micro power unipolar Hall effect sensor switch, used to sense the magnetic field changes when the charging case is opened/closed, and then notify the charging case MCU and earphones to pair or disconnect with the connected device.
Charging case built-in lithium-ion battery model: M652040, nominal voltage: 3.72V, rated capacity: 580mAh 2.158Wh, production date: February 2024. The battery is equipped with a circuit protection board and protected by high-temperature insulating tape.
Tear off the insulating protective film, the circuit on one side of the battery protection board. A lithium battery protection IC, MOS tube and thermistor are set.
The MOS tube with screen printing 8205A works with the lithium battery protection IC. The lithium battery protection IC with silkscreen 3O1B is responsible for overcharge, over-discharge and over-current protection of the battery.
Pogo Pin connector for charging earphones.
Bluetooth pairing function button.
Disassemble the cover button structure, and fix the indicator light FPC inside – the light guide provides light for the bar indicator on the button.
Remove the FPC. 6 LED lamp beads are used to feedback the bluetooth pairing and charging status.
02/ Soundcore Sport X20 Earphones Teardown
Disassemble the earphone cavity. A transparent plastic part is set inside the front cavity on the right to isolate it from the rear cavity.
The battery is fixed on the upper layer inside the rear cavity and welded to the FPC.
Disassemble the FPC and remove the transparent plastic part. The left side is the internal structure of the front cavity, and the speaker is fixed with glue.
Take out the speaker, and connect the rear-feedback noise cancelling microphone at the end of the FPC.
Take out the FPC and components inside the front cavity.
The front diaphragm of the dynamic driver built into the earphone.
The back of the dynamic driver.
After actual measurement, the diameter of the dynamic driver is about 11mm.
The S508 MEMS microphone is a feed-back noise cancelling microphone, which is used to pick up noise from the inside of the ear canal and further eliminate noise.
Remove the battery inside the back cavity, and the FPC is connected to the motherboard at the bottom of the back cavity.
Remove the back cover of the earphone. There is a bluetooth antenna in the middle of the cover. There are microphone pickup holes on both sides, and a waterproof and breathable membrane is set.
The motherboard structure inside the cavity is connected to the FPC through a BTB connector.
Pick up the connector and take out the earphone motherboard.
The circuit on one side of the earphone motherboard.
The circuit on the other side of the earphone motherboard. BES BES2600IUC is a highly integrated and cost-effective bluetooth audio SoC. Supports dual-mode Bluetooth 5.3 and multi-device connection. Supports hybrid noise cancelling and has powerful application processing capabilities.
Crystal oscillator that provides clock for the bluetooth chip.
The N2 3B957 MEMS microphone is a feed-forward noise cancelling microphone, which is used to pick up external environmental noise.
The other one N2 3B957 MEMS microphone is a call microphone, which is used to pick up the caller’s voice.
Function button for operation control.
Metal dome for connecting bluetooth antenna.
BTB connector for connecting FPC, from OCN, model: OK-114GF012-35.
Integrated lithium battery protection IC with silkscreen 3s IZ.
Built-in soft-pack button battery in the earphone, nominal voltage: 3.85V, rated capacity: 60mAh 0.231Wh.
BTB connection for connecting FPC to motherboard, from OCN, model: OK-114GM012-35.
All components of Soundcore Sport X20 true wireless noise cancelling earphones.
03/ Summary
Soundcore Sport X20 adopts ear-hook design, which provides a more stable wearing experience through soft silicone earhook. The earhook supports rotation and telescopic functions, which can better adapt to the needs of different users.
The charging case is equipped with a 580mAh lithium battery and a circuit protection board for overcharge, over-discharge, and over-current protection. The motherboard uses the Injoinic IP5518 charging management SoC, which integrates MCU, 5V boost converter, lithium battery charging management, battery level indication function, etc. The single chip provides a complete power solution, effectively reducing the size of the overall solution and reducing BOM cost. It also uses the OCS OCH4002 Hall element for the lid opening connection function.
The earphone has a built-in 60mAh soft-pack button battery, equipped with an 11mm dynamic driver and three MEMS microphones for sound pickup. The main control chip is the BES BES2600IUC bluetooth audio SoC, which supports Bluetooth 5.3, dual-device connection and hybrid noise cancelling.
PS: Translated from 52audio
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