Modifying 30w laptop power supply.

[Hammez1]

Hello,

I have a 30w USB-C laptop power supply.
This power supply is capable of outputting 5, 12, and 20v.
Its standard output is 5v, but I need it to output 12v.
Is there any way I can change this?

Thanks in advance for any help.

Hammez

 

[Delta Prime]

No.
USB PD 2.0 supports five power supply levels: 15W, 27W, 45W, 60W, and 100W.It uses a protocol that enables two devices to negotiate voltage, current, and direction of power this “handshaking” enables the USB PD to become a bi-directional power source at the same time allows data flow over the USB cable. These functions are called DFP (Downstream Facing Port) and UFP (Upstream Facing Port) respectively. Sorry, kiddo.
The USB PD Revision 3.1 is backward compatible & it increases the power level from the existing USB standard 2.0 up to 240Watts along with increase voltages 20V, 36V & 48Volts fixed; enables up to 140W, 180W & again 240watts.
https://www.usb.org/usb-charger-pd

 

[73's de Edd]

Sir Hammez . . . . .

You say . . . .

I have a 30w USB-C laptop power supply.

Now, to potentially be of more help to you, on your situation can you give us further exacting details.
Is the situation being that this specific 30w USB-C laptop power supply that you now have, is just being a cast off supply, gifted from a friend, curbside find, flea market or thrift store item?
Otherwise, it is not one that is normally dedicated to normal use of a laptop that you have . . .or other ? equipment of yours ?

If the situation is that you have it and now want to use it as a stand alone item and and want to " permanently" convert its 5V ? amps ? output to 12VDC instead.
Can you give its brand and model number and any specs of voltage and current capability at each voltage output level being printed on its case..

Visually . . . . . does it look like access to its circuit board innards within the case is possible . . . . or it is having an ultrasonically bonded case and will require cutting open its case ?
What will this newly acquired 12VDC output be powering and at what max amperage current consumption ? . . . . with particular interest, if its being an AM radio ?

Thaaaaaaassssit

73's de Edd.

 

[Hammez1]

Sir Hammez . . . . .

You say . . . .

I have a 30w USB-C laptop power supply.

Now, to potentially be of more help to you, on your situation can you give us further exacting details.
Is the situation being that this specific 30w USB-C laptop power supply that you now have, is just being a cast off supply, gifted from a friend, curbside find, flea market or thrift store item?
Otherwise, it is not one that is normally dedicated to normal use of a laptop that you have . . .or other ? equipment of yours ?

If the situation is that you have it and now want to use it as a stand alone item and and want to " permanently" convert its 5V ? amps ? output to 12VDC instead.
Can you give its brand and model number and any specs of voltage and current capability at each voltage output level being printed on its case..

Visually . . . . . does it look like access to its circuit board innards within the case is possible . . . . or it is having an ultrasonically bonded case and will require cutting open its case ?
What will this newly acquired 12VDC output be powering and at what max amperage current consumption ? . . . . with particular interest, if its being an AM radio ?

Thaaaaaaassssit

73's de Edd.

Hello,
I will endeavour to get the info you require.

Firstly- it will be used in its converted state to run a small soldering iron that requires 12v @ 3Amax (27-30w).

On teardown videos the case was opened by squeezing the sides with a adjustable cresent wrench.

The charger is just what I had lying around in my drawer of random electrical stuff, with the right connection for the soldering iron.

The make and model are; Dell HA30NM150.

This charger is capable of outputting; 20v @ 1.5A/12v @ 2A/5v @ 2A

Hope that helps.

Hammez

 

[Harald Kapp]

You can interface a "USB PD Trigger" module to force the output to 12 V or 20 V. Be aware that you then should connect your load to the PD trigger module. Do not use this in connection with a USB HUB. The permanently provided 12 V will damage any components attached that do not support 12 V.

 

[Martaine2005]

It would be interesting to know the exact current of the soldering iron.
You say the soldering iron is 3A max but the power supply is 2A.

 

[Bluejets]

run a small soldering iron that requires 12v @ 3Amax

So get a pc power supply that already has a 12v output(or near to) , most will drive around 20 Amp if required, cost maybe 2cents on flea market or garage sale.

 

[Hammez1]

You can interface a "USB PD Trigger" module to force the output to 12 V or 20 V. Be aware that you then should connect your load to the PD trigger module. Do not use this in connection with a USB HUB. The permanently provided 12 V will damage any components attached that do not support 12 V.

Thanks for the suggestion.
That got it working.

Hammez