USB-C Power Delivery

PD trigger chips, voltage contracts, PPS and cable limits: one USB-C cable for data and recoil power.

Firearms

USB-C Power Delivery · Deep Dive

USB-C Power Delivery

Twenty volts down the same cable as the mouse data.

PD trigger chips, voltage contracts, PPS and cable limits: one USB-C cable for data and recoil power.

Photo: Adafruit USB Type C Power Delivery Dummy Breakout (HUSB238 PD trigger board) by Adafruit

Search every volume:

?

How to search

sten gun
pages with both words
"sten gun"
the words together, as a phrase
sten OR sterling
either one (| works too)
sten -replica
leave out pages that mention “replica”

Without quotes, the last word also matches longer words that start with it (sten finds Stenophylla), and close word forms count (rifle finds rifles). Tick Exact words to match whole words only.

Whole deep dives are listed first, then the pages inside them.

    Volumes

    1. Vol 1 How USB Power Delivery Works — Contracts, Voltages and the Rules a Sink Must Keep Source capabilities, fixed and programmable objects, the extended power range, what a charger of each wattage must offer, the limits a sink accepts in return, and the voltage that actually arrives at the gun
    2. Vol 2 Can a PD Charger Replace the 24 V Brick? — 20 V, PPS, 28 V and AVS Against the Rail Window The forcing ratio each contract gives a regulated coil, why a shot fits under a 3 A contract, why 20 V plus a boost is worse than it looks, why 28 V sits on the clamp, which chargers actually offer 28 V, and the contract that matches the brick
    3. Vol 3 Sink Controllers — Eight Chips Compared, and the Three Worth Designing In CH224, IP2721, HUSB238A, STUSB4500, Infineon CYPD3177, TI TPS25751 and TPS26750, Diodes AP33772S: what each asks for, what it does when it cannot get it, whether it switches the rail, whether it touches the data pair, and why Infineon's CCG3PA is the wrong side of the cable
    4. Vol 4 Trigger Boards and Decoys — Ready-Made PD Sinks for the Bench and the Cable Box Adafruit's HUSB238 breakout, SparkFun's STUSB4500 board and the two-dollar 28 V decoys: what each really does on a charger that cannot give what it asks, the five checks before trusting one, and where a trigger board belongs in this project and where it does not
    5. Vol 5 Cables, Connectors and the GX Decision — Where PD Can Live in a Wired Gun Three places to put the PD sink and what each does to D31, a USB-C receptacle in a printed shell, the cable classes and their limits, USB data and recoil power on one cable, and what PD adds to charging the wireless gun's pack
    6. Vol 6 Recommendations and the Bench — What to Buy, What to Decide, and Nine Measurements The PD plan in one page, the proposed decision rows, the analyser question answered with what the lab already has, and the tests on the ADP3450 that turn this dive's worst cases into numbers