Original OEM Fast Car Charger FB-001-QC2.0

DSC_3806

Official specifications: I got it from ebay dealer: cnfu7527

DSC_3805

No fancy box for this charge, just an envelope and a plastic bag, but it did include a USB cable.

DSC_3807 DSC_3811

DSC_3808
DSC_3810

The fake QC specifications.

DSC_3812 DSC_3809

DSC_3813 DSC_3814



Measurements

Load%20sweep%2011.6V%20%231

The QC marked output can deliver about 2.6A

Load%20sweep%2014.6V%20%231

Load%20sweep%2024.0V%20%231

And slightly less at 24V supply

Load%20sweep%2011.6V%20%232

The 2.1A marked output is exactly the same.

Load%20sweep%2011.6V

And also when they are used in parallel.

Voltage%20sweep%202.2A%20input%20current

Voltage%20sweep%202.2A

No%20load%20voltage%20sweep

Load%20test%202.1A

There was no problem running 1 hour with 2.1A load.
The temperature photos below are taken between 30 minutes and 60 minutes into the one hour test.

Temp6294

M1: 34.4°C, HS1: 57.4°C

Temp6295

M1: 39.3°C, HS1: 51.4°C

10ohm

At 0.5A the noise is 61mV rms and 353mVpp.

5ohm

At 1A the noise is 64mV rms and 406mVpp.

2.5ohm

At 2.0A the noise is 74mV rms and 556mVpp.



Tear down

DSC_4084

I could easily pull the front off, but getting the circuit board out I broke a capacitor!

DSC_4085

On this side is the two capacitors, the inductor and a led.

DSC_4087


DSC_4088 DSC_4090

DSC_4089

DSC_4086

The "fuse" is a zero ohm resistor. The switcher (U1: HC8813) is a 2.1A chip with 10V to 30V input range and support for cable compensation.

DSC_4091


Being a 12V device there is no need to test with high voltages.



Conclusion

This charger is a fake, it do not in any way support QC. With that said, it is an acceptable 2.1A charger, it is without any auto coding and has some noise.



Notes

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