I came across the TPS51225RUKR IC while learning how to repair my dell inspiron laptop . I did not know what this IC was and so I am writing this note. The TPS51225RUKR is a synchronous buck controller IC designed by Texas Instruments (TI) , commonly used in laptops (including Dell sys…
I came across the TPS51225RUKR IC while learning how to repair my dell inspiron laptop . I did not know what this IC was and so I am writing this note. The TPS51225RUKR is a synchronous buck controller IC designed by Texas Instruments (TI) , comm…
In my earlier notes, I described the laptop power-up sequence , detailing which components and ICs receive power first. Continuing my investigation into laptop repair, I discovered that the NPCE885PA0DX - I/O controller chip also known as the KBC(K…
I described earlier the laptop power up sequence, that which part and IC receives the power supply first. Continuing my notes on laptop repair I found out that NPCE885PA0DX - I/O controller chip also known as KBC(Keyboard Controller) is the first…
The PIC24FJ128GA110 is a 16-bit microcontroller made by Microchip Technology , part of their PIC24F family . It's designed for general-purpose embedded applications where low power, moderate performance, and rich peripheral support are require…
This is my another note on Laptop repair at home . Looking the dell inspiron schematic, I found that the Nuvoton NPCE885PA0DX I/O controller IC that I already wrote about is also called KBC or Keyboard Controller. There are also terms relating sig…
I’ve been learning how to repair Dell laptops for the past two weeks. I previously wrote about the DC power supply input circuit and listed all the components I found, including MOSFETs like SI7121DN and FDV301N , as well as various capacitors an…
While learning how to repair my laptop I started with the DC power input jack. Then I studied this power supply circuit and the components used described in my note Dell Inspiron Power Supply Revisted For Repair . I collected the information on th…
Previously I wrote about the various mosfets like FDV301N MOSFET and SI7121DN MOSFET used in the power supply part of the dell laptop. I am writing this note on NPCE885PA0DX IC which is I/O controller chip that I found is used in my dell inspi…
While learning to repair my laptop I found MOSFETs with 8 pins in the schematic. SI7121DN MOSFET is one example of such mosfet which is new to me and back in the engineering college I never encountered or hear of 8 pins MOSFET. I am writing this …
