QCY HT05 is true wireless earphones recently released by QCY. The earbuds have a noise cancellation depth of up to 40dB and are equipped with a 10mm graphene dynamic driver. It supports Bluetooth 5.2 and is equipped with WUQI high-performance flagship chip. Newly upgraded six-mic and ENC noise cancellation, providing six modes including transparency mode, the sound quality is improved, and the vocal transmission is clearer. It also adopts a strong anti-wind noise design and has a total battery life of about 30 hours.
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$32 – QCY HT05 Review
01/ QCY HT05 Charging Case Teardown
First, separate the cockpit structure of the charging case from the upper and lower lids of the charging case.
The bottom structure of the cockpit of the charging case, and the protective foam is arranged above the battery unit.
Separate the battery unit, the main board of the charging case is arranged under the battery, and is connected with the battery through the power cable.
A bar-shaped soft-pack lithium battery with a rated capacity of 350mAh and a rated voltage of 3.7V, from PATL.
Detach the charging case main board unit from the charging case cabin.
The cockpit bracket structure of the charging case is shown, with magnets for the adsorption and positioning of earbuds.
Front circuit structure of charging case motherboard unit.
Button keycap structure.
The location of the two LED indicators.
Silkscreen 25BAC integrated lithium battery protection IC.
The LPS LP7801D power management chip is a single-chip solution IC designed for small-capacity lithium battery charging/discharging applications. Integrated linear charge management module, ultra-low power consumption synchronous boost discharge management module, built-in power MOS, external programmable charging current, maximum charging current 1A.
LP7801D integrates charging indication, input overvoltage protection, and constant temperature electrical functions. Discharge part, boost output 5.1V, load current capacity 500mA, standby power consumption 1uA, with EN control function. Control EN can completely shut down the output voltage, built-in over-current, over-temperature protection functions, operating frequency 1.2MHz, support 2.2uH small inductance applications. Provides simple and easy-to-use solutions for the application of small-capacity lithium battery systems. The package form of LP7801D is ESOP-8.
According to 52audio, audio products of Black Shark, Xiaomi, Honor, OPPO, Huawei, Redmi, realme, Lenovo, Sony, Nokia, Motorola, Edifier, Soundcore, 1MORE, QCY, Razer and many other brands have adopted LPS power management chip.
A black power inductor.
Metal thimbles on the motherboard for earbuds charging.
The circuit structure on the back of the motherboard unit of the charging case.
The Type-C power input socket on the motherboard of the charging case.
A non-standard microcontroller on the motherboard of the charging case.
02/ QCY HT05 earbuds teardown
Separate the front and rear cavities of the earphone along the earphone shell.
A battery pack is arranged inside the rear cavity of the earphone.
The internal structure of the front cavity of the earphone is provided with a speaker unit.
Uncover the speaker unit and set the noise cancellation microphone under it.
The front of the speaker unit.
The back of the speaker is wired with multiple test points.
The speaker is connected to the battery and the microphone circuit structure through two cables.
A MEMS microphone is provided on the circuit board of the BTB cable. Laser carving R25P ONXK’s MEMS noise cancellation microphone.
After actual measurement, the speaker diameter of QCY HT05 earphones is about 10mm.
Remove the battery outer bracket and remove the battery unit.
The BTB cable structure at the bottom of the earphone’s rear cavity is sealed and fixed with black glue.
Battery shield cover.
A soft pack lithium battery with a capacity of 0.16Wh.
The front of the BTB cable structure.
The back of the BTB cable structure.
The male seat of the BTB cable structure.
The rear cavity of the earphone is an opening structure set on the motherboard.
The BTB cable socket on the earphone motherboard unit.
Remove the header stem cover.
Touch electrodes are arranged inside the headset stem cover.
A mainboard unit is arranged inside the headset stem.
There is an earphone adsorption magnet inside the headset stem.
The front circuit structure of earphone motherboard.
The earphone is equipped with WUQI WQ70XX series bluetooth audio SoC, which adopts leading low-power and high-performance DSP+RISC-V chip architecture design. Integrated Hybrid (FF+FB) hybrid ANC, can achieve 40dB noise cancellation, has three levels of noise cancellation depth, covering different usage scenarios. At the same time, it supports multi-MIC AI ENC noise cancellation to meet the high-quality listening experience in complex environments.
In terms of superior performance, WUQI WQ70XX is a high-standard bluetooth audio SoC chip that supports BT/BLE 5.2 dual-mode protocol stack. Built-in high-performance DSP and NPU (Neural Network Processing Unit) to support complex multi-microphone uplink noise cancellation algorithms while taking into account low power consumption. At the same time, it integrates Hybrid (FF+FB) ANC, which can provide rich interfaces and high integration. It is suitable for advanced TWS noise cancellation earphones and other low-power products that require complex audio processing and voice AI capabilities.
According to 52audio, many earphones of well-known brands such as Soundcore, MONSTER, Haylou, JBL, QCY, SoundPEATS, Noise, Walmart and so on have adopted the WUQI bluetooth chip.
The charging metal contacts on the earphone motherboard.
Scientic SDHL1608F4R7MT fully magnetic shielded precision wire wound inductor is 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.
SDHL1608F4R7MT is one of the SDHL1608 series. It adopts 0603 (Inch size) SMD package, with 1μH to 22μH standard gear sensitivity optional, small volume and high current. Suitable for TWS earbuds, IOT devices, smart watches, smart bracelets, communication modules, facial recognition modules and other applications.
According to 52audio, Scientific inductors have been adopted by well-known brands such as JBL, Redmi, OnePlus, Soundcore, FIIL, realme, QCY, Haylou, and Monster.
The BTB socket on the earphone motherboard.
The circuit structure on the back of the earphone motherboard.
Two LED indicators on the earphone.
Laser carving R25P 09XK MEMS noise cancellation microphone.
Winsemi WSDF23A2N2H fully integrated lithium battery protection IC, WSDF23 series products are highly integrated solutions for the protection of single-cell Li-ion/Li-polymer rechargeable battery packs. It adopts ultra-small DFN4L-1×1 package, built-in advanced power MOSFET, high-precision voltage detection circuit and delay circuit. It has all the protection functions required by batteries such as overcharge, overdischarge, overcurrent, short circuit, etc., and the power consumption is very low when working, and it also has a CTL shipping mode setting function. The WSDF23 series is suitable for all applications of various information products that require long-term power supply from lithium-ion or lithium-polymer rechargeable batteries.
According to 52audio, at present, TWS earbuds of FIIL, QCY, Edifier, Honor, BULL and other brands have adopted the Winsemi lithium battery protection chip.
Another Scientic SDHL1608F4R7MT fully magnetic shielded precision wire wound inductor.
16.000 MHZ crystal oscillator, provides clock for bluetooth chip.
Metal dome for connecting touch ICs.
Laser carving R25P 09XK’s MEMS pickup microphone.
All components of QCY HT05 true wireless noise cancellation earphones.
03/ Summary
In terms of appearance design, it is officially announced that the design of QCY HT05 is inspired by xylitol chewing gum, with a unique angular curve, oval shape, and delicate skin-friendly texture.
In terms of internal structure, the charging case adopts the Type-C interface to input power and has a built-in PATL 350mAh battery. The power management chip adopts LPS LP7801D, which is specially designed for small capacity lithium battery charging/discharging applications. Integrated charging and discharging module, input protection, maximum charging current 1A, standby power consumption 1uA. A non-standard single-chip microcomputer is also used for charging case control.
The earphone motherboard unit, battery and speaker unit are connected in series through the BTB connector. Using 10mm dynamic driver, equipped with WUQI WQ70XX bluetooth audio chip, low power consumption and high performance design. Supports Bluetooth 5.2 and integrates Hybrid (FF+FB) hybrid ANC function. The periphery adopts Scientific full magnetic shielding precision winding inductor to supply power to the internal circuit. In addition, the left and right earphones are equipped with a total of six microphones, which can accurately process ambient sounds and pick up vocals more clearly. The built-in battery capacity of earphone is 0.16Wh, and it adopts Winsemi WSDF23A2N2H fully integrated lithium battery protection IC. Support shipping mode to meet the long-term shipping or storage needs of TWS earbuds.
Source: 52audio
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