Author Topic: Help with ic chip (HP Probook x360 440G1)  (Read 597 times)

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Offline zabounisTopic starter

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Help with ic chip (HP Probook x360 440G1)
« on: November 15, 2022, 05:49:04 pm »
Hi, this is from an HP Probook x360 440 G1 motherboard (L28241-601).
As you can see on the picture, i'm trying to source the specific blown chip. I cannot read whatever is printed on the chip. The only digits visible are: "08" FM. Does anybody have a slight idea what is this chip or an alternative one. Seems like a driver for the above mosfets.


« Last Edit: November 15, 2022, 06:20:28 pm by zabounis »
 

Online fzabkar

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Re: Help with ic chip (HP Probook x360 450G1)
« Reply #1 on: November 15, 2022, 06:14:44 pm »
Are you saying that this single chip drives both MOSFETs?


ISL95808HRZ-T, Renesas, High Voltage Synchronous Rectified Buck Dual MOSFET Driver, marking 08, DFN-8:
https://www.renesas.com/us/en/document/dst/isl95808-datasheet
« Last Edit: November 15, 2022, 06:33:59 pm by fzabkar »
 

Offline zabounisTopic starter

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Re: Help with ic chip (HP Probook x360 440G1)
« Reply #2 on: November 15, 2022, 06:23:29 pm »
Ι assume yes. There is no other ic driver chip around them, and it is exactly above them. Also i can see a trace from the second mosfet's gate going directly to one of this chip's legs. The other gate of the mosfet dissapears in a via. I will check with the multimeter to see if it also ends up to this chip.

 

Online fzabkar

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« Last Edit: November 15, 2022, 06:41:37 pm by fzabkar »
 

Offline zabounisTopic starter

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Re: Help with ic chip (HP Probook x360 440G1)
« Reply #4 on: November 15, 2022, 06:43:32 pm »
Cheers mate!!!

It seems like this one. i checked that Pin 1 and Pin 5 are the gate driver pins and yes this little guy is driving both mosfets.
 


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