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Home › Teardowns › UGREEN Wireless Charging Pad (CD186) Teardown Review

UGREEN Wireless Charging Pad (CD186) Teardown Review

Floyd
4 yearsagoTeardowns
0 0

Recently, one of UGREEN's newly launched wireless charging pad (CD186) became a bestseller. At 49RMB(7USD), with its Apple and Android universal support, and 5W/Apple 7.5W/Samsung 10W wireless charging, it offers much higher cost-performance ratio than its 99RMB(14USD) counterparts. Now let's give it a teardown to get a deeper look.


I. Unboxing

UGREEN Wireless Charging Pad (CD186) Teardown Review-Chargerlab

It comes with a sleeve and brown carton package.

UGREEN Wireless Charging Pad (CD186) Teardown Review-Chargerlab

Specifications on the back.

UGREEN Wireless Charging Pad (CD186) Teardown Review-Chargerlab

Input: 5V2A, 9V1.67A. Max output: 15W. Model: CD186.

UGREEN Wireless Charging Pad (CD186) Teardown Review-Chargerlab

Package contents: wireless charging pad, USB-A to Micro USB cable, warranty card, and user manual.

UGREEN Wireless Charging Pad (CD186) Teardown Review-Chargerlab

USB-A to Micro USB cable.

UGREEN Wireless Charging Pad (CD186) Teardown Review-Chargerlab

UGREEN logo on the center front, with random dots all over the surface, a clean and lively look.

UGREEN Wireless Charging Pad (CD186) Teardown Review-Chargerlab

It has a diameter of 100mm and a non-slip rubber pad on the back.

UGREEN Wireless Charging Pad (CD186) Teardown Review-Chargerlab

The shell is made of PVC with a tactile coating to avoid slipping.

UGREEN Wireless Charging Pad (CD186) Teardown Review-Chargerlab

It looks like an elegant flying saucer, what do you think?

UGREEN Wireless Charging Pad (CD186) Teardown Review-Chargerlab

Micro USB input port on the side.

UGREEN Wireless Charging Pad (CD186) Teardown Review-Chargerlab

It has a thickness of 11.5mm, which is about 1/3 of the diameter of a 1 Yuan RMB coin, and is ultra-thin and portable.

UGREEN Wireless Charging Pad (CD186) Teardown Review-Chargerlab

It weighs 112.1g(4.0oz).

UGREEN Wireless Charging Pad (CD186) Teardown Review-Chargerlab

There is an LED indicator on the side. Steady green light indicates that it is charging or charging is completed. The green light flashes to indicate that the position of the phone is off or there is something blocking the charging.

UGREEN Wireless Charging Pad (CD186) Teardown Review-Chargerlab

Using the wireless charging aging tester, we read a "PPP" which means it passed the 5W, 7.5W and 10W wireless charging. So it supports normal 5W, Apple 7.5W, and Samsung 10W wireless charging.

UGREEN Wireless Charging Pad (CD186) Teardown Review-Chargerlab

iPhone XS Max on the UGREEN wireless charging pad (CD186).

UGREEN Wireless Charging Pad (CD186) Teardown Review-Chargerlab

It starts charging instantly when we put the phone on top.

UGREEN Wireless Charging Pad (CD186) Teardown Review-Chargerlab

Specifications on the bottom.


II Teardown

UGREEN Wireless Charging Pad (CD186) Teardown Review-Chargerlab

Removing the rubber ring on the bottom reveals 6 screws.

UGREEN Wireless Charging Pad (CD186) Teardown Review-Chargerlab

Unscrew and open the shell.

UGREEN Wireless Charging Pad (CD186) Teardown Review-Chargerlab

In the middle is a wireless charging coil, and in the middle of the coil is the thermistor for temperature measurement.

UGREEN Wireless Charging Pad (CD186) Teardown Review-Chargerlab

The wireless charging circuit board is relatively simple, with only two main ICs.

UGREEN Wireless Charging Pad (CD186) Teardown Review-Chargerlab

A large iron plate on the back for heat dissipation and counterweight.

UGREEN Wireless Charging Pad (CD186) Teardown Review-Chargerlab

From the bottom, on the iron plate is a heat-dissipating silicone pad, a magnetic separator, and the coil.

UGREEN Wireless Charging Pad (CD186) Teardown Review-Chargerlab

JURCC's special resonant capacitor for wireless charging, 0.4μF, withstand voltage 100V.

UGREEN Wireless Charging Pad (CD186) Teardown Review-Chargerlab

The coil solder joints are full and the end is wrapped with a heat shrinkable tube to prevent the coil enameled wire from being scratched.

UGREEN Wireless Charging Pad (CD186) Teardown Review-Chargerlab

It adopts a wireless charging solution from Xiamen Newyea which consists of NY7503S, SY03, a small amount of resistance capacity, and coils totaling about 50 components.

UGREEN Wireless Charging Pad (CD186) Teardown Review-Chargerlab

Xiamen Newyea NY7503S wireless charging transmitter chip is a 10W highly integrated wireless power transmitter IC, compatible with WPC Qi 1.2.4 specification, with efficiency up to 80%, and support FOD and other protection functions.

UGREEN Wireless Charging Pad (CD186) Teardown Review-Chargerlab

Detailed specification of the Newyea NY7503S.


UGREEN Wireless Charging Pad (CD186) Teardown Review-Chargerlab

The Newyea SY03 is a highly integrated wireless power transmitter analog front end that contains all of the analog components required to implement a WPC compliant transmitter. The Sy03 integrates a full-bridge power driver with MOSFETs, current sense amplifier, bootstrap circuit, communication demodulator, linear regulator and protection circuit. The SY03 can work with transmitter controller to create a high-performance wireless transmitter that complies with both the WPC V1.2.4 Extended Power Profile (EPP) and Baseline Power Profile (BPP). Once an EPP receiver is detected, the transmitter will provide with up to 15W of output power. If a BPP receiver is present, the transmitter will deliver only up to 5W of output power.The system supports foreign object detection (FOD) by continuously monitoring the amount of power transferred and comparing that to the amount of received power, as reported by the receiver. In order to do this, the SY03 measures the input DC current very accurately using a current sense amplifier. Besides, the SY03 also supports input under-voltage lockout (UVLO), over-current protection (OCP), short-circuit protection (SCP) and over-temperature protection (OTP). These protections further enhance the reliability of the total wireless power transmitter system.

UGREEN Wireless Charging Pad (CD186) Teardown Review-Chargerlab

Detailed specification of the Newyea SY03

UGREEN Wireless Charging Pad (CD186) Teardown Review-Chargerlab

Micro USB port.

UGREEN Wireless Charging Pad (CD186) Teardown Review-Chargerlab

UGREEN logo, below is the temperature probe solder joint.

UGREEN Wireless Charging Pad (CD186) Teardown Review-Chargerlab

It is designed with two indicator lights, only one is soldered for mass production.

UGREEN Wireless Charging Pad (CD186) Teardown Review-Chargerlab

All the components.


III ChargerLAB conclusion


1. Being a cost-effective product, the UGREEN wireless charging pad (CD186) adopts a highly integrated chip solution with very few peripheral components.

2. Despite the low price, it features dual heat dissipation by using heat-dissipating silicone and metal plate to effectively control the influence of temperature rise on wireless charging efficiency during the charging process. The attention to detail and user experience is appreciated.

3. The wireless charging pad adopts Xiamen Newyea NY7503S+SY03 wireless charging solution. This solution has many advantages including wide range of authentication, multiple functions and high integration. The two main chips can form a complete wireless charging solution, which greatly simplifies design and mass production process.

Source: chongdiantou

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