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Higher USB power

Moderator: Roscoe Primrose

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tomp

Post subject: Higher USB power

Posted: June 1st, 2021, 1:51 pm

Joined: February 28th, 2013, 3:31 pm
Posts: 1782

A new specification has been proposed to allow up to 240W of power availability on a USB C connector.

https://audioxpress.com/news/usb-specif ... usb-type-c

Tom

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Pelliott321

Post subject: Re: Higher USB power

Posted: June 1st, 2021, 2:08 pm

Joined: January 15th, 2015, 7:19 am
Posts: 1700
Location: Baltimore MD

Hard to believe the USB type C connector can handle that much power

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Roscoe Primrose

Post subject: Re: Higher USB power

Posted: June 1st, 2021, 2:12 pm

Site Admin

Joined: February 28th, 2013, 10:38 am
Posts: 1687

Pelliott321 wrote:

Hard to believe the USB type C connector can handle that much power

Power isn't the issue, current is. That 240W is 5A at 48V....

Roscoe

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I can explain it to you, but I can’t understand it for you.

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David McGown

Post subject: Re: Higher USB power

Posted: June 1st, 2021, 2:16 pm

Joined: February 28th, 2013, 1:19 pm
Posts: 915

Need to beef up the wire gauge to handle the current. 240W at 48V/5A is alot to push down thin wire for a typical USB Type C cable. Safe current for 24 ga. copper is around 3.5A, would need to go to at least 22 ga. wire.

David

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Pelliott321

Post subject: Re: Higher USB power

Posted: June 1st, 2021, 2:17 pm

Joined: January 15th, 2015, 7:19 am
Posts: 1700
Location: Baltimore MD

potato potadoe

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tomp

Post subject: Re: Higher USB power

Posted: June 1st, 2021, 2:54 pm

Joined: February 28th, 2013, 3:31 pm
Posts: 1782

It's amazing that the new spec is 10 times the original USB. Before you know it they will probably come with a whole house generator attached. :crazy:

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Roscoe Primrose

Post subject: Re: Higher USB power

Posted: June 1st, 2021, 3:03 pm

Site Admin

Joined: February 28th, 2013, 10:38 am
Posts: 1687

Pelliott321 wrote:

potato potadoe

How do you figure?

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HAL

Post subject: Re: Higher USB power

Posted: June 1st, 2021, 4:34 pm

Joined: January 13th, 2016, 9:14 pm
Posts: 791

Yes, using the new GaN SMPS USBC 45watt supply and the cable is rated for 100 watts. That is 20V@5A, but the current does not go up at lower voltages. Probably due to connector pins in the USBC plug/jack more than wire diameter.

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DaveR

Post subject: Re: Higher USB power

Posted: June 1st, 2021, 7:35 pm

Joined: February 19th, 2017, 9:43 am
Posts: 531

tomp wrote:

A new specification has been proposed to allow up to 240W of power availability on a USB C connector.

https://audioxpress.com/news/usb-specif ... usb-type-c

Tom

Why?

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I have too much stuff - https://www.pleasebuymystuff.com

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tomp

Post subject: Re: Higher USB power

Posted: June 1st, 2021, 8:34 pm

Joined: February 28th, 2013, 3:31 pm
Posts: 1782

Apparently a lot of people are making USB add ons that are power pigs.

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