SoundPeats Capsule3 Pro continues the family-style design style in terms of appearance. In terms of functional configuration, it is equipped with a 12mm biological diaphragm dynamic driver, supports LDAC codec, and brings better sound detail performance. Support dual-feed hybrid ANC, 3-mic call noise cancellation and transparent mode, active noise cancellation depth can reach 43dB. Support game mode, the latency can be as low as 70ms, and the game experience is smooth and synchronized with sound and picture. Earbuds have a single battery life of up to 8 hours, and can reach 52 hours of comprehensive battery life when used with a charging case.
We have teardown SoundPeats products before, including: SoundPEATS Mini Pro HS, SoundPEATS Air3 Deluxe HS and SoundPeats TrueAir2. Let’s take a look at the internal structure and configuration information of this product.
01/ SoundPeats Capsule3 Pro charging case teardown
Teardown the charging case and take out the cockpit structure.
The inner structure of the charging case shell, and the function keys set the keycap rebound structure.
The bottom structure of the cockpit, the main board is fixed by screws, and the cable is connected to the main board through the ZIF connector.
The structure on one side of the charging cockpit is equipped with a cable connecting the indicator light and the Hall element.
The structure on the other side of the charging cockpit is fixed with a battery unit.
Remove the screws and remove the motherboard. There is also a small board for charging the earbuds below, which is fixed by screws and connected to the main board by metal shrapnel.
The main components inside the charging case include the motherboard, battery, a small board for charging earbuds and an FPC cable.
The bottom structure of the charging cockpit, two magnets are fixed by glue to absorb earbuds and charging case cover.
Two metal shrapnel connectors are set for the circuit on the side of the small board that charges the earbuds.
The circuit on the other side of the small board that charges the earbuds, and three metal shrapnels are used to connect to the main board.
The charging case built-in lithium battery model: PATL 741543, nominal voltage: 3.7V, charging limit voltage: 4.2V, rated capacity: 500mAh 1.85Wh, from PATL small lithium new energy.
The positive and negative nickel sheets of the battery are welded to the wires, and the protection circuit is located on the main board.
The two indicator lights on the cable are used to feedback the status of bluetooth pairing and charging through different colors.
The hall element of AD201 silkscreened at the end of the cable is used to sense the magnetic field change when the charging case cover is turned on/off, and then inform the charging case MCU to control the pairing or disconnection of the earbuds with the connected device.
The circuit on the side of the motherboard of the charging case.
The circuit on the other side of the charging case motherboard.
The main board is connected to the three metal contacts of the earphone charging board.
The ZIF connector that connects the cable to the motherboard.
LPS LP7810 ultra-high-efficiency charging compartment management chip is a TWS charging compartment management chip with built-in 30V input withstand voltage linear charging and I2C programmable TWS charging compartment management chip. The chip has charging, boosting, NTC management, LDO, and other multiple protection circuits. Support two-way communication with earbuds, charging parameters can be set through the I2C bus, and send an interrupt signal to the MCU when a specific event occurs. In addition, LP7810 integrates two LED drivers, which is convenient for the design of light display scheme.
Cooperating with LP4080, LP7810 can achieve 93% battery-to-battery system efficiency, and greatly increase the battery life of the charging compartment by 20%. At the same time, it supports high-current fast charging within 250ma without getting hot, so as to meet the battery life of three minutes of charging and two hours of talking. The package of LP7810 is 3mmx3mm QFN-16 package.
According to 52audio, there are currently Black Shark, SoundPeats, Xiaomi, Honor, OPPO, Huawei, Redmi, realme, Lenovo, Sony, Nokia, Motorola, Edifier, Soundcore, 1MORE, QCY, Razer and many other audio brands. The product adopts LPS power management chip.
XySemi XB5332B lithium battery integrated protection chip, integrated power MOSFET, high-precision voltage detection circuit and delay circuit. The XB5332B is housed in an ultra-small SOT23-5 package with only one external component making it an ideal solution for limited space in battery packs.
The XB5332B has all the protection functions required in battery applications, including overcharge, overdischarge, overcurrent and load short-circuit protection, etc. Accurate overcharge detection voltage ensures safe and fully utilized charging. Low static power consumption.
According to 52audio, the TWS earbuds of Xiaomi, Redmi, MONSTER, Motorola, Rapoo, Anker, QCY, VANKYO, SONG, Honor, Edifier and many other brands have adopted the XySemi lithium battery protection solution.
Bluetooth pairing function button, patch welding.
An unlabeled MCU microcontroller.
02/ SoundPeats Capsule3 Pro earbuds teardown
Enter the earbuds teardown section and open the cavity along the earbud head parting line.
The internal structure of the earbud front cavity, the internal components are connected to the internal motherboard of the headset stem through a cable, and the cable is pasted with cloth tape to isolate the battery.
The internal structure of the rear cavity of the earbud is equipped with a battery unit, and the battery is isolated with a shielding sticker, and the battery wire is welded to the cable.
Take out the speaker, and set the rear feed noise cancellation microphone at the end of the cable.
The front diaphragm of the earbud dynamic speaker is covered with a layer of biological fiber, which brings a more mellow and full-bodied mid-low frequency effect.
The back of the dynamic speaker is welded with the cable, and two tuning holes are set on the edge to improve the acoustic performance.
After actual measurement, the size of the dynamic driver is about 12mm, which is consistent with the official announcement.
The MEMS microphone of laser engraving iB252 2527 is a feed-back noise cancellation microphone, which is used to pick up noise from inside the ear canal.
Take out the battery unit inside the rear cavity of the earphone, and use a steel shell button battery, which is insulated by wrapping it with high-temperature tape.
The internal structure of the earbud rear cavity, the cable is connected to the main board in the headset stem, and glued to fix and seal. A magnet is set in the cavity for adsorption and fixation with the charging case.
The earbud has a built-in steel shell button battery positive electrode, engraved with parameter information, model: M1040S2, voltage: 3.85V, capacity: 0.135Wh, from MIC-POWER. The negative pole of the battery is engraved with a QR code for product traceability.
Take off the back cover of the headset stem.
The inside of the cover is provided with a touch detection patch and a bluetooth antenna, and the exposed copper is connected to the main board.
The internal structure of the headset stem cavity, the main board is fixed by positioning columns.
The cables of the internal components of the earbud front cavity are connected to the motherboard through the BTB connector.
The bottom structure of the headset stem cavity, two circular rubber sleeves are the sealing structure of the microphone, which is used to improve the sound collection performance.
The circuit on the side of the earbud motherboard.
The circuit on the other side of the earbud motherboard.
A metal dome attached to the touch detection pad.
A metal shrapnel connected to the bluetooth antenna.
Silkscreen 1y hz touch detection IC.
The earbud is equipped with WUQI WQ7033AR bluetooth audio SoC, integrated Hybrid (FF+FB) ANC, and the maximum noise cancellation depth reaches 43dB. Support LDAC high-definition audio codec technology and 3-MIC AI ENC noise cancellation to achieve high-quality listening experience in complex environments. At the same time, it adopts the leading HIFI5 DSP+RISC-V chip architecture design, and has the industry’s first-class power consumption performance. The ultra-low power consumption design provides the earbud with a single 8-hour battery life. With a 12mm dynamic driver, enjoy Hi-Res high-definition music experience.
WUQI WQ7033A series is a bluetooth audio SoC for the mid-to-high-end market, supporting BT/BLE 5.2 dual-mode protocol stack and a new generation of bluetooth audio technology standard LE Audio. Built-in high-performance HiFi 5 DSP and NPU (Neural Network Processing Unit) to support complex multi-microphone uplink noise cancellation algorithm and keyword wake-up, while taking into account low power consumption. Integrated Hybrid (FF+FB) ANC, can support earphones applications with high bandwidth and deep noise cancellation. Provides rich interfaces and high integration, suitable for advanced noise cancellation TWS earbuds and other low-power products that require complex audio processing and voice AI capabilities.
According to 52audio, there are already Soundcore, JBL, MONSTER, haylou, QCY, SoundPEATS, Noise and other well-known brands of headphones using bluetooth chips from WUQI.
Two Scientic SDHL1608F4R7MT fully magnetically shielded precision wound inductors around the main control chip are one of the SDHL1608 series. Inductance value: 4.7μH±20%, DC resistance: 700mΩ±10%, saturation current: 450mA, temperature rise current: 400mA, used to power the internal circuit of the bluetooth chip.
According to 52audio, Scientic inductors have been adopted by JBL, Redmi, OnePlus, Soundcore, FIIL, realme, QCY, Haylou, Monster and other brands.
The 16.000MHz crystal oscillator provides the clock for the bluetooth chip.
LPS LP4080H ultra-high efficiency linear charging fast charging chip. It contains a linear charger to charge the Li-Ion battery in the earbuds, with CHGb charge status indication and ENb input to disable the charger if needed.
LP4080H cooperates with LP7810 charging compartment management chip to support 250mA current charging. In standby mode, the LP4080 draws only 600nA from the battery. The chip has functions such as ultra-low dropout charging management, warehouse entry and exit detection, 1-wire private communication protocol, and 5 logic signals. Through the 1-wire protocol, users can flexibly adjust the float voltage, power-on signal, reset signal, etc.
The MEMS feed-forward noise cancellation microphone of Laser Engraving iB251 2527 adopts the same model as the feed-back noise cancellation microphone, which is used to pick up external environmental noise.
The MEMS microphone of the third laser engraving iB251 2527 is a call pickup microphone, which is used for voice call function to pick up human voice.
All components of SoundPEATS Capsule 3 Pro noise cancellation true wireless earphones.
03/ Summary
In terms of appearance, the charging case of SoundPeats Capsule3 Pro adopts oval design, matte texture, small and portable. The earbuds adopt a handle-shaped in-ear design, combined with a variety of materials, and with the decorative piece designed by IML technology, the product is very textured. The body curve design simulates ergonomics, and three different sizes of soft silicone eartips provide a comfortable and stable wearing experience.
In terms of internal structure configuration, the charging case has a built-in PATL 500mAh soft pack battery, and the earbuds are equipped with a MIC-POWER 0.135Wh steel case button battery. Power management adopts LPS LP7810+LP4080 ultra-high efficiency fast charging solution. The combination of the two can achieve 93% battery end-to-battery system efficiency, and the battery life of the charging case can be extended by 20%, bringing a comprehensive battery life of up to 52 hours to the SoundPeats Capsule3 Pro earbuds, effectively enhancing product competitiveness.
In other respects, the charging case uses the XySemi XB5332B lithium battery integrated protection IC, which is responsible for the overcharge, overdischarge, overcurrent and load short circuit protection of the built-in battery. The earbud is equipped with a 12mm bio-diaphragm unit, 3 MEMS microphones, and the main control chip is WUQi WQ7033AR bluetooth audio SoC. Integrated Hybrid (FF+FB) ANC, supports multi-MIC AI ENC noise cancellation and LDAC high-definition audio codec technology. The periphery is equipped with two Scientic SDHL1608F4R7MT fully magnetic shielded precision winding inductors for power supply.
Source: 52audio
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