Interactive · USB Power Delivery

65W GaN Charger — Power Lab

Tap a port to occupy it. The charger follows a fixed power-distribution profile — the exact output of each port depends on which ports are in use. Watch it renegotiate live.

0W negotiated of 65W 0 ports active

⚡

VoltCore 65GaN · USB-PD 3.0

total output
65W

Click a port to occupy / free it

▤ Power-distribution profile live row highlighted

Ports in use	C1	C2	C3	A

⚠️

Shared low-power rail: USB-C3 and USB-A draw from one 5V⎓3A (15W) rail. If a low-power device is on USB-A — or a phone is trickle-charging (battery ≥ 80%) — the normal output of USB-C3 is reduced. It's not recommended to charge a watch or sub-5W device on USB-A.

⚙ How the split works

Output isn't a free-for-all — it follows a fixed profile. USB-C1 / C2 are the full-power PD rails, USB-C3 is a lower PD rail, and USB-A is the legacy QC/SCP rail. Occupying a port re-applies the profile for that exact combination — that's the flicker you see.

⌁ The shared low rail

USB-C3 and USB-A sit on one 15W rail. Used alone, each can take more; used together they split a single 5V⎓3A budget (≈7.5W each) — shown by the amber bracket linking them on the charger.

A↔C Protocols

PD — Power Delivery: USB-IF standard; negotiates voltage & current dynamically.
QC — Quick Charge: Qualcomm fast charge on the USB-A rail.
SCP / FCP — Huawei: Low-voltage/high-current (SCP) and legacy high-voltage (FCP).