The Red Magic 3a is a gaming smartphone released by Nubia, a subsidiary of ZTE Corporation. This device is specifically designed to cater to the needs of mobile gamers with its powerful performance and unique features. One of the standout features of the Red Magic 3a is its impressive display. It sports a 6.65-inch AMOLED display with a resolution of 1080 x 2340 pixels. This display offers sharp and vibrant visuals, making it perfect for gaming and multimedia consumption.
Detailed specifications of the LD8526.
8-inch AMOLED screen has ultra-thin bezels and boasts a class-leading vivid display with 120Hz refresh rate , and 1300 nits of daytime-ready peak brightness. To give a couple more comparison points, the OnePlus 7 Pro managed 11 hours and 50 minutes, while the Google Pixel 3 only made it to 7 hours and 21 minutes.
This display offers sharp and vibrant visuals, making it perfect for gaming and multimedia consumption. It also supports a 90Hz refresh rate, which ensures smooth and fluid motion during gameplay. Under the hood, the Red Magic 3a is powered by the Qualcomm Snapdragon 855 processor, which is one of the most powerful and efficient chipsets available in the market.
Nubia Red Magic 30W USB PD PPS Charger Teardown Review
On April 28th, Nubia's Red Magic 3 gaming smartphone was officially released at the Beijing RNG E-sports Center. In addition to the Qualcomm Snapdragon 855 processor, the Red Devil 3 is also equipped with a 5000mAh ultra-large capacity battery which supports 27W USB PD fast speed charge, compatible with QC4.0. The following is the teardown of the included charger of the Red Magic 3 gaming smartphone.
A look at the in box charger
The included charger of the Red Magic 3 gaming smartphone has a pure black casing with a plastic film on the surface. The charger is manufactured by Shenzhen Kunxing Technology Co., Ltd., and the shape looks very familiar.
The charger comes with unfoldable prongs. In terms of size, the length, width, and thickness of this charger are 52.3mm, 43.2mm, and 23.8mm respectively.
The product model was NB-A930A-USBA-1, supported a single USB-C port output. A look at charger surface, the QC protocol specification were 5V/3A, 9V/3A, 12V/2.5 A, the maximum output was 30W. The fixed PDO of the charger are 5V/3A、9V/3A、12V/2.5A、15V/2A, and also compatible with PPS 3.3V to 11V output range. The charger was made by Shenzhen Kunxing Technology Co., Ltd.
The weight of the charger is about 61g.
Using ChargerLAB POWER-Z KT001 to detect the output protocol of this charger, the display showed USB DCP 5V/1.5A, QC2.0, QC3.0 protocol
The power profile of this charger supported four fixed PDO outputs with 5V/3A、9V/3A、12V/2.5A、15V/2A, and two PPS output with 3.3-11V/3A、3.3-16V/2A.
Teardown
Pry open the charger case and pull out the internal PCB board.
A large amount of glue was used to fix and dissipate heat between the components on the front side of the PCB. The transformer marked part number of the core type and the date of manufacture.
The input end was distributed with a delay fuse, an NTC surge suppression resistor, a common mode inductor, and three primary filter electrolytic capacitors.
An electrolytic capacitor from BERYL at the input, all three capacitors share the same specification of 400V 15μF, a total of 45μF.
The delay fuse, 2A 250V.
3D-7 NTC surge suppression resistor.
The Y capacitor which belongs to the CD series MLCC by Matsuda Electronics.
PC817 optocoupler for output voltage feedback.
The output USB-C port is fixed to a small PCB daughterboard. Due to the end of the small PCB daughterboard is very close to the primary side, it is wrapped with tape for insulation. Nearby the daughterboard is an optocoupler with glue insulation and there are two solid capacitors for output filtering.
The two output filter capacitors are also from BERYL, the specifications are 560μF 25V.
The blue Y capacitor is glue to the transformer.
Inside the PCB board, there are sufficient spacing reserved between the primary and secondary side.
The input rectifier bridge.
The PWM controller LD5763GS from Leadtrend. The LD5763CGSU is a green mode PWM IC built-in with brown-in/out functions in an SOP-8 package. It minimizes the component counts, circuit space, and reduces the overall material cost for the power applications.
The LD5763CGSU features HV start, green-mode power-saving operation, and internal slope compensation, soft-start functions to minimize the power loss and enhance the system performance.
With complete protection including OPP (Over Power Protection), OVP (Over Voltage Protection), fast OSCP (Output Short Circuit Protection) and brown-in/out protection, LD5763CGSU prevents the circuit from being damaged under abnormal conditions.
Furthermore, the LD5763CGSU features frequency swapping and soft driving function to reduce the noise and improve EMI.
The SVF7N65C primary side power MOS, 7A 650V, from Silan Micro.
Detailed specifications of the SVF7N65C.
Skysilicon synchronous rectification driver and LD8526 MOSFET on the secondary side. Leadtrend LD8526 is a secondary side synchronous rectification (SR) driver IC designed for PD. It was suited for flyback low side and high side synchronous rectification in CCM, DCM and QR mode. LD8526 can generate its own supply voltage through low output voltage or high side rectification applications to charge the battery, suited for PD application, which output voltage range from 3V to 20V. In light load condition, LD8526 will enter green mode to reduce operation current by stopping the SR MOSFET driving function.
Detailed specifications of the LD8526.
Remove the USB-C PD daughterboard from the mainboard reveals the Leadtrend LD6610GQMW, in QFN4x4 package.
LD6610 passed USB IF certification and TID number was 1061012. LD6610 also passed Qualcomm QC4/4+ certification. LD6610 was a highly integrated USB-C PD controller integrated with MOSFET control circuit and microcontroller. It embedded 8-bit MCU to process PD protocol and supports QC4/4+ and QC3.0, QC2.0 and other fast charge protocol.
Detailed specifications of the LD6610.
On the back is an output VBUS switching MOSFET and 5mΩ current sampling resistor. The current sampling resistor is used for constant current regulation, output short circuit and overcurrent protection.
VBUS switching MOSFET from Shenzhen SI Semiconductors.
Conclusion
The included charger of the Nubia's Red Magic 3 gaming smartphone adopted Leadtrend's fast charging solution and BERYL capacitors. The overall design is simplified yet highly integrated, achieving compact size and high power.
In terms of performance, this charger supports QC2.0/3.0/4.0 and USB PD PPS fast charging, suited for most mobile phones with fast charging protocol support.
A large amount of glue was used to fix and dissipate heat between the components on the front side of the PCB. The transformer marked part number of the core type and the date of manufacture.
This processor, combined with the Adreno 640 GPU and up to 8GB of RAM, delivers exceptional gaming performance with high frame rates and smooth gameplay. In terms of storage, the Red Magic 3a comes with ample space to store games, apps, and media files. It offers up to 128GB of internal storage, which can be further expanded with a microSD card slot. One of the key selling points of the Red Magic 3a is its cooling system. It features an advanced cooling system with an internal turbo fan that helps dissipate heat during intense gaming sessions. This feature ensures that the device stays cool, even during extended periods of heavy gaming. The Red Magic 3a also boasts a powerful battery to support long gaming sessions. It packs a non-removable 5,000mAh battery, which provides enough power to keep you gaming for hours without needing to recharge. Additionally, it supports 27W fast charging, allowing you to quickly get back into the game when the battery runs low. In terms of camera capabilities, the Red Magic 3a is equipped with a 48-megapixel primary camera on the rear and a 16-megapixel front-facing camera for selfies and video calls. While the camera performance may not be the main focus of this gaming-oriented device, it still manages to capture decent photos and videos. Overall, the Red Magic 3a is a compelling choice for mobile gamers who are looking for a powerful and feature-packed smartphone. Its impressive display, powerful performance, advanced cooling system, and long-lasting battery make it an excellent option for gaming on the go. With its affordable price tag compared to other gaming smartphones on the market, the Red Magic 3a offers great value for money..
Reviews for "Unlocking the Potential of Red Magic 3a: Tips and Tricks"
1. John - 2 stars - I was really excited to get my hands on the Red Magic 3a, but unfortunately, I was left disappointed. The phone's performance was sluggish, and I experienced lag and stuttering while using it. The battery life was also underwhelming, as it drained quickly even with minimal usage. Additionally, I found the build quality to be subpar, with the phone feeling cheap and flimsy in my hands. Overall, I regret purchasing the Red Magic 3a and would not recommend it.
2. Sarah - 3 stars - While the Red Magic 3a had some positive aspects, it fell short in several areas. The design of the phone was bulky and not very aesthetically pleasing. The camera quality was average at best, with photos appearing grainy and lacking detail. I also had issues with the fingerprint sensor, as it often failed to recognize my fingerprint, requiring multiple attempts to unlock the phone. Furthermore, the user interface was not user-friendly and took some time to navigate. Given these drawbacks, I would suggest looking for other options before considering the Red Magic 3a.
3. Michael - 2 stars - My experience with the Red Magic 3a was less than satisfactory. The phone had a tendency to overheat, especially during extended gaming sessions, which greatly affected the overall performance. The screen quality was also disappointing, with colors appearing washed out and lacking vibrancy. Additionally, the phone lacked any standout features and felt outdated compared to other phones in the same price range. Overall, I found the Red Magic 3a to be a lackluster device and would not recommend it to others.