Baseus Car Charger QC PD 30W BS-C15C

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Official specifications: I got it from Amazon.com.au

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I got the charger in a cardboard box.

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The box included the charger, warranty chart and a manual.

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Measurements
Load%20sweep%2011.6V%20QC5V

The overload protection is at around 3.2A at 5V output.

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THe same at 9V

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And at 12V

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And the same with 24V input.

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The PD output has the same limit.

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Load%20sweep%2011.6V%20PD12V

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Up to 15V

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But at 20V the output maximum current is limited to 2.2A (It is more than rated).

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The 5V output works down to 6V input

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12V output need 13V input or it will be low.

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The PD output also needs about 6V to deliver 5V output.

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15V output will reset when voltage drops below the 20V limit, but it is possible to activate it again (My test equipment do not do that).

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The electronic is testing the output for a load when nothing is connected.

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I did this test at 3A on the QC output.
The temperature photos below are taken between 30 minutes and 60 minutes into the one hour test.

Temp6865

M1: 44.9C, HS1: 48.5C

Temp6866

HS1: 61.2C

10ohm

Noise at 0.5A output is 4mV rms and 65mVpp

5ohm

Noise at 1A output is 8mV rms and 149mVpp

2ohm

Noise at 2.5A output is 6mV rms and 125mVpp

10ohmQC9V

Noise at 0.9A output is 4mV rms and 80mVpp

10ohmQC12V

Noise at 1.2A output is 4mV rms and 84mVpp




Tear down

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I could screw the bottom off and then pull the circuit out.

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The electronic is hidden behind this shield.

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Here is the input fuse, the inductor and the dual output transistor to turn each output on separately.

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Some soldering and I could get the shield off.

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Below it is the switcher and dual charge controller (U1: Marked SW3510) and two switcher transistors (Q1 && Q2). Each output has it own sense resistor (R9 & R14: 2 x 0.005ohm).



Conclusion

This charger is mostly for one device at a time, not for two. It only has one converter, this means when using PD or QC it will often disable the opposite output. The automatic output switch did also turn on/off a couple of extra times.

The output power is fine for a single device and the charger supports just about everything, it also has low noise and good overload protection.



Notes

I got this charger from reader "Mostly Melbourne"

Read more about how I test USB power supplies/charger
Compare car chargers and other DC supplied chargers