Support 11V3A 33W fast charge, evaluate the GOOD-SHE dual-port fast charger

Shenzhen GOOD-SHE Technology Co., Ltd. (hereinafter referred to as GOOD-SHE) is a company specializing in the production and processing of chargers, data cables, power adapters and other products. It has a complete and scientific quality management system. Over the years, we have continued to innovate to adapt to the development of the global electronics industry, and provide many new and old customers with high-quality and low-cost adapter products.span>

Introduction of GOOD-SHE 33W Dual Port Charger

The GOOD-SHE 33W charger has an overall white appearance, and the shell material is a flame-retardant shell.

As shown in the picture, the charger is equipped with fixed pins, the pin type is American standard, universal national standard socket.

The charger is equipped with a 1C1A dual USB fast charging interface. The USB-A has an orange inner tongue, which is in line with the characteristics of fast charging.

It can be seen that the contacts inside the USB-A are widened, which is also designed to carry large currents. Among them, USB-C supports 5-20V full voltage range, supports up to 33W fast charge power, and USB-A supports 18W fast charge.

Specific parameter information is printed on the surface of the pin. The specific model of the charger is GS-W30A0933, which supports a wide voltage input range of 100-240V.

In terms of volume, the length of the charger measured with a caliper is about 44.09mm (without pins).span>

The width is about 43.13mm.

The thickness is about 26.64mm.

It can be concluded that the measurement parameters of the charger are about 44.09x43.13x26.64mm, the volume of the charger is about 50.65cm³, and the maximum output is 33W, and the power density is about 0.65W/cm³.

Compared with Apple’s 30W charger, it is smaller in size and has more ports than the latter.

The net weight is about 55.1g.

Protocol and charging test/strong>

In terms of protocol, use the POWER-Z KT002 of ChargerLAB to read the fast charge protocol of the USB-C interface, which basically covers most of the fast charge protocols on the market. The display of the test meter is almost all green, and green represents USB-C support Fast charge agreement.

The PDO message is measured here, USB-C supports 5-20V full-voltage gear, and additionally supports 3.3-11V3A and 3.3-16V2A two sets of PPS fast charging gears.

Finally, read the fast charging protocol of the USB-A interface. Compared with USB-C, it only lacks support for PD, PPS, and QC4+ fast charging.

Enter the charging test link, use USB-C to charge Xiaomi 11, the power is 8.85V 3.65A 32.40W, and successfully shake hands with PPS fast charge.

The summary of the test data of the USB-C interface shows that the device is in a fast charging state as a whole, and 15V or 20V high-voltage fast charging can be provided for iPad and notebooks.

It can be seen from the histogram that the Mi 11 has the highest power, and the power histograms of other devices tend to be relatively flat, and most of them are in a fast charging state.

In the test part of the USB-A interface, the power of Meizu 18 Pro using USB-A can reach 28.45W, which has exceeded the nominal maximum power value. It can be seen that the USB-A still reserves a certain power margin in the power design. Amount of.

It can also be seen from the histogram that the power of Meizu 18 Pro is far ahead. Most other Android models can trigger QC fast charging, and Huawei models can trigger SCP fast charging.

The USB-A interface here is mainly for fast charging of mobile phones. The actual test supports fast charging of Huawei SCP and QC fast charging of other Android models.

It can also be seen from the histogram that the power of Meizu 18 Pro is far ahead. Most other Android models can trigger QC fast charging, and Huawei models can trigger SCP fast charging.

In the multi-port simultaneous output part, 2 ports are used to charge 2 devices at the same time. The actual measurement of dual ports belongs to the same output design.

In addition to the charging compatibility test, the whole process of charging the device was tested this time. The charging object was selected as the iPad Pro for the 33W power. The following is the whole process of the actual test.

The picture above is a test of charging the iPad Pro using the USB-C of the GOOD-SHE 33W charger. The whole process is divided into four stages and ends in 2 hours and 13 minutes.

Drawing the entire charging process into a graph, it can be seen that 33% of the power is charged in half an hour, 66% in 1 hour, and 2 hours and 13 minutes are required to fully charge.

The temperature control of the charger is tested. The test condition is to allow the charger to continuously output the power of 20V1.5A 30W for 1 hour and then use the thermal imager to collect the surface temperature of the charger. The test environment is based on a thermostat at 25°C.

The highest temperature collected on the surface of the charger after 1 hour was 60.9°C.

The highest surface temperature of the charger on the other side is 57.2°C.

If electrical appliances are often plugged into sockets and not used, they will consume electricity, but they are very small. After the power meter test, the no-load power consumption of the GOOD-SHE 33W dual-port charger at 220V 50Hz is 0.045W, and the energy loss in one year is about 0.39KW·h. If the market price of electricity is 0.6 yuan/KW·h, then charge The electricity bill for a year is about RMB 0.23.

The no-load power consumption at 110V 60Hz is 0.02W. Converted, the electric energy consumed in one year is about 0.17KW·h. If the market price is 0.6 yuan/KW·h, the annual electricity bill of the charger is about 0.1 yuan.

The charger is essentially a conversion device, and there will be losses in the process, which will be dissipated in the form of heat. We usually see that the parameters on the charger output 100W or 65W is the maximum output power that the charger can provide for the device, but the power drawn by the charger from the socket is often greater. The following is the GOOD-SHE 33W dual-port charger at 220V 50Hz The conversion efficiency test was carried out under the conditions of AC input and 110V 60Hz AC input. The test results are as follows：

Under 220V 50Hz, the output power of the Gushi 33W dual-port charger in each voltage range is fully drawn for testing: the input power of the AC terminal and the output power of the USB terminal of the plug-in board are measured at the five positions, and the charger can be obtained by calculation. The conversion efficiency ranges from 87.10% to 90.51%.

Under 220V 50Hz, the output power of the GOOD-SHE 33W dual-port charger in each voltage range is fully drawn for testing: the input power of the AC terminal and the output power of the USB terminal of the plug-in board are measured at the five positions, and the charger can be obtained by calculation. The conversion efficiency ranges from 87.10% to 90.51%.

This is a ripple test using a GOOD-SHE 33W dual-port charger under 220V 50Hz AC input. The ripple test is divided into no-load (the Y-axis current in the histogram is 0A) and heavy load (the Y-axis current in the histogram is not 0A) ) Two kinds. The highest ripple is 89.6mVp-p, and the charger is in a 20V1.5A output state; the lowest is 16.8mVp-p, and the charger is in a 5V0A no-load state.

At 110V 60Hz, the highest ripple is 75.2mVp-p, and the charger is in 9V3A output state; the lowest is 13.6mVp-p, and the charger is in 5V0A no-load state.

Ripple test summary

In the national standard, the charger ripple requirement is not higher than 200mVp-p. Under the input voltage of 110V 60Hz and 220V 50Hz for the Gushi 33W dual-port charger, all output power ripple peak-to-peak values are lower than the standard of 200mVp-p, which performs well.

The appearance of this 33W dual-port charger from Good-she is a common design, equipped with US-standard fixed pins, and a universal national standard socket. The charger is equipped with 1C1A dual USB fast charging interface. USB-C supports 5-20V full-voltage gear, which can fast charge notebooks. It supports 3.3-11V3A and 3.3-16V2A PPS fast charge gears and multi-quick charge protocol. The actual charging compatibility is good. The USB-A interface supports 18W fast charging, but the power can exceed 20W in the actual test. Both USB-C and USB-A can provide high-power fast charging for the device, and the overall performance is good.