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Is It Possible: Type-C to 12V 6 Pin

DerpyDino
By DerpyDino
in Hobby Electronics
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Just wondering if I could use a Type-C port as a weak 6 pin. Just an extra umph.
And before you ask, no, my laptop does not support Thunderbolt 3.

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no. USB is rated for 5A max, at 12V that means 60w. a PCIe 6pin is rated to do 75w, so it is not enough

CPU: i7-2600K 4751MHz 1.44V (software) --> 1.47V at the back of the socket Motherboard: Asrock Z77 Extreme4 (BCLK: 103.3MHz) CPU Cooler: Noctua NH-D15 RAM: Adata XPG 2x8GB DDR3 (XMP: 2133MHz 10-11-11-30 CR2, custom: 2203MHz 10-11-10-26 CR1 tRFC:230 tREFI:14000) GPU: Asus GTX 1070 Dual (Super Jetstream vbios, +70(2025-2088MHz)/+400(8.8Gbps)) SSD: Samsung 840 Pro 256GB (main boot drive), Transcend SSD370 128GB PSU: Seasonic X-660 80+ Gold Case: Antec P110 Silent, 5 intakes 1 exhaust Monitor: AOC G2460PF 1080p 144Hz (150Hz max w/ DP, 121Hz max w/ HDMI) TN panel Keyboard: Logitech G610 Orion (Cherry MX Blue) with SteelSeries Apex M260 keycaps Mouse: BenQ Zowie FK1

 

Model: HP Omen 17 17-an110ca CPU: i7-8750H (0.125V core & cache, 50mV SA undervolt) GPU: GTX 1060 6GB Mobile (+80/+450, 1650MHz~1750MHz 0.78V~0.85V) RAM: 8+8GB DDR4-2400 18-17-17-39 2T Storage: HP EX920 1TB PCIe x4 M.2 SSD + Crucial MX500 1TB 2.5" SATA SSD, 128GB Toshiba PCIe x2 M.2 SSD (KBG30ZMV128G) gone cooking externally, 1TB Seagate 7200RPM 2.5" HDD (ST1000LM049-2GH172) left outside Monitor: 1080p 126Hz IPS G-sync

 

Desktop benching:

Cinebench R15 Single thread:168 Multi-thread: 833 

SuperPi (v1.5 from Techpowerup, PI value output) 16K: 0.100s 1M: 8.255s 32M: 7m 45.93s

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Posted
9 minutes ago, Jurrunio said:

no. USB is rated for 5A max, at 12V that means 60w. a PCIe 6pin is rated to do 75w, so it is not enough

USB-C PD can do 20V 5A, convert that to 12V and it should be able to deliver 75 watts. Still a very bad idea™.

 

Not to mention you actually need to do signalling to draw power from USB-C. It's not a good choice if you want just a dumb power delivery wire.

¯\_(ツ)_/¯

 

 

Desktop:

Intel Core i7-11700K | Noctua NH-D15S chromax.black | ASUS ROG Strix Z590-E Gaming WiFi  | 32 GB G.SKILL TridentZ 3200 MHz | ASUS TUF Gaming RTX 3080 | 1TB Samsung 980 Pro M.2 PCIe 4.0 SSD | 2TB WD Blue M.2 SATA SSD | Seasonic Focus GX-850 | Fractal Design Meshify C | Windows 10 Pro

 

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HP Omen 15 | AMD Ryzen 7 5800H | 16 GB 3200 MHz | Nvidia RTX 3060 | 1 TB WD Black PCIe 3.0 SSD | 512 GB Micron PCIe 3.0 SSD | Windows 11

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If you don't need to always provide up to 75w the pci-e 6pin wants, then... with an 18w-30w external phone charger maybe. 

 

You get one of those chips that negotiates the voltage (to talk to the phone charger and switch between 5v/9v/12v/20v), a microcontroller (or comparator) and a mosfet and you make a board. 

 

When you plug usb c into your board, the chip asks the charger to switch from 5v to 12v. Your microcontroller monitors the incoming voltage and when it goes to 12v and stays there for more than a couple seconds, it enables the mosfet and sends that 12v to the 6pin connector to power whatever.

If you want to support 20v input, you'd have to add a 20v to 12v step-down dc-dc converter, or if you want to be extra fancy, you'd add a SEPIC (step-down/step-up dc-dc converter) which can take 5v ... 20v and produce 12v and then you may even skip the negotiation chip (though sending 30w at 5v through usb-c cable is unlikely and a really bad idea.

 

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