Do laptops use ATX? If not, what do they use instead?

[38034580]

Do laptops use ATX? If not, what do they use instead?

[Grabhanem]

3 minutes ago, 38034580 said:

Do laptops use ATX? If not, what do they use instead?

Laptops don't use any particular form factor; instead, each motherboard is custom-designed for each laptop model.

[38034580]

1 minute ago, Grabhanem said:

Laptops don't use any particular form factor; instead, each motherboard is custom-designed for each laptop model.

What power interface is used instead?

[WhitetailAni]

1 minute ago, 38034580 said:

What power interface is used instead?

Whatever the manufacturer decides.

[38034580]

Just now, FakeKGB said:

Whatever the manufacturer decides.

How do laptops turn off the power on shutdown?

[WhitetailAni]

Just now, 38034580 said:

How do laptops turn off the power on shutdown?

What do you mean?

[38034580]

How do laptops cut power to its internal parts at shutdown? 

1 minute ago, FakeKGB said:

What do you mean?

 

[WhitetailAni]

Just now, 38034580 said:

How do laptops cut power to its internal parts at shutdown? 

 

Uhh... by sending a power-off signal to the battery, kinda like ATX? I don't know for sure - I don't design laptops.

[Electronics Wizardy]

Just now, 38034580 said:

How do laptops cut power to its internal parts at shutdown? 

 

The powersupply on the board cuts off voltage rails that aren't needed on the board. There are buck/boost converteres on all laptop boards that take power from the ac power brick or battery and conver it to voltages that the chips need.

[38034580]

Just now, Electronics Wizardy said:

The powersupply on the board cuts off voltage rails that aren't needed on the board. There are buck/boost converteres on all laptop boards that take power from the ac power brick or battery and conver it to voltages that the chips need.

So the PFC is built into the motherboard?

[SlayerOfHellWyrm]

Better question, why? What are you trying to do, or, what do you want to know?

They don't really have any standards for motherboards, or power. How the units shut down depends on the hardware in the laptop. They will receive the shutdown command the same as any other computer, but how internals handle that is dependent on the laptop, BIOS, circuitry, etc.

My gut tells me you are looking to do something you shouldn't be...

 

[Electronics Wizardy]

1 minute ago, 38034580 said:

So the PFC is built into the motherboard?

Do you mean power factor correction by pfc?

 

The laptop never sees ac, there is a external power brick that converts the ac into dc first.

[38034580]

1 minute ago, Electronics Wizardy said:

Do you mean power factor correction by pfc?

 

The laptop never sees ac, there is a external power brick that converts the ac into dc first.

I mean something like the 3.3/5/12 multi voltage outputter as in a desktop PSU.

[Electronics Wizardy]

Just now, 38034580 said:

I mean something like the 3.3/5/12 multi voltage outputter as in a desktop PSU.

Yea there are buck and boost converts built into the board that make voltage rails as needed.

[SlayerOfHellWyrm]

Just now, 38034580 said:

I mean something like the 3.3/5/12 multi voltage outputter as in a desktop PSU.

This makes me even more suspicious that you're trying something you should not be...

[Grabhanem]

Just now, 38034580 said:

I mean something like the 3.3/5/12 multi voltage outputter as in a desktop PSU.

Those voltages are generally generated as needed at whatever point they're needed, rather than using a dedicated power supply, for space reasons.