Author Topic: Help identifying 6360 X1944 USB Power Controller (QFN-40)  (Read 947 times)

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Offline JusTideaFIXTopic starter

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Help identifying 6360 X1944 USB Power Controller (QFN-40)
« on: October 25, 2023, 01:54:16 pm »
Please help me determine the model of the IC USB power controller and find the datasheet.
Marking 6360 X1944
Installed in the power circuit of a mini PC M6 (Morefine) single-board computer between the USB Type-C input and secondary power circuits.
According to one of the protocols (QC or PD), it requests 12 Volts from the USB source.
Without IC directly from 12 V the PC works. But of course, it can no longer work from Powerbank (it could before the breakdown).
Pinout:
 17 Type-C CCx USB Power Derivery Communication Line (5 kOhm Pull Down)
 20 Type-C CCx USB Power Derivery Communication Line (5 kOhm Pull Down) other side of USB-C
 21 GND
23 USB 2.0 Type-C Data
24 USB 2.0 Type-C Data
25 GND
26 GND
27 GND
 36 Vin from USB Type-C VBUS
38 Vin Sense (Feedback)? 100 Ohm Type-C VBUS
40 GND
« Last Edit: October 28, 2023, 06:44:34 pm by JusTideaFIX »
 

Offline fzabkar

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Re: Help identifying 6360 X1944 USB Power Controller (QFN-40)
« Reply #1 on: October 25, 2023, 10:12:01 pm »
This IC doesn't appear to have high power inputs and outputs, in which case it can't be a power switch. There is a 100 ohm resistor in series with Vcc, so it is clearly a low power device. Moreover, I'm wondering what is involved in "power control", since the AC adaptor appears to be a fixed 12VDC / 3A device. :-?

BTW, I'm wondering whether D18 is reserved for a 12V TVS diode. If so, then it could have saved the IC.

FWIW, here are the FCC filings:

https://fccid.io/2AM5Z-M6
« Last Edit: October 25, 2023, 10:22:44 pm by fzabkar »
 
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Offline JusTideaFIXTopic starter

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Re: Help identifying 6360 X1944 USB Power Controller (QFN-40)
« Reply #2 on: October 26, 2023, 11:00:31 pm »
This IC doesn't appear to have high power inputs and outputs, in which case it can't be a power switch. There is a 100 ohm resistor in series with Vcc, so it is clearly a low power device.
Yes, I was wrong. Already corrected pinout
Moreover, I'm wondering what is involved in "power control", since the AC adaptor appears to be a fixed 12VDC / 3A device. :-?
Correct, AC adaptor fixed 12VDC. A faulty chip is needed to work from USB smart chargers and powerbanks.
BTW, I'm wondering whether D18 is reserved for a 12V TVS diode. If so, then it could have saved the IC.
I think yes. This would prevent damage
FWIW, here are the FCC filings: https://fccid.io/2AM5Z-M6
Unfortunately this information is useless to me.
Image of the board without a chip:
 

Offline fzabkar

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Re: Help identifying 6360 X1944 USB Power Controller (QFN-40)
« Reply #3 on: October 26, 2023, 11:25:58 pm »
I was looking at the internal photos of the PCB, trying to identify the manufacturers of the other chips. Most of the chips seem to be sourced from mainstream manufacturers. However, the audio chip (CJC6811A) was manufactured by Wuhan Guanghuaxin Technology. I can't find any information about this company, let alone their web site.

This blog discusses the IC:

https://inf.news/en/digital/a9f10f6d6bc93fe4f632ffb8263ad0d9.html

Also, there is a network IC with an "Intel" marking which I cannot find anywhere.

Therefore, I suspect that your mystery IC could be some "off-brand" part.
 

Offline coromonadalix

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Re: Help identifying 6360 X1944 USB Power Controller (QFN-40)
« Reply #4 on: October 27, 2023, 05:05:25 pm »
seeing the surface chip ??? could be a rebrand, have you tried acetone of strong cleanup stuff ?? to see if its just some " paint job  masquerade ? "
 


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