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What is VBUS supply range

VBUS is the module's only power input. It accepts 3.7 to 5.1 V, typically 5.0 V. Anything above 5.1 V damages the module, so the carrier must bring its supply down into this range first.Also called: module supply voltage, VBUS voltage

What VBUS is

The name VBUS comes from USB, where it is the 5 V power line. The video module runs from a single VBUS rail that accepts 3.7 to 5.1 V, typically 5.0 V, which sits right around the USB 5 V level. All VBUS pins on the module must be tied together on the carrier and fed from that one rail.

More than 5.1 V causes damage

The spec is explicit: more than 5.1 V damages the module. A 12 V adapter, a 24 V vehicle or industrial supply, or the 9 / 15 / 20 V that USB-C PD negotiates must never go straight to VBUS. Step it down to about 5 V with a DC-DC converter on the carrier first.

Sizing the carrier supply

Allow at least 1 A per module, tie all VBUS pins together, and place 22 μF + 100 nF decoupling near the edge connector. Keep ripple at or below 50 mVpp (10 Hz – 20 MHz). If the same carrier also has a USB-C-to-HDMI converter or an HDMI splitter chip, include their current in the supply budget.

On ANLYA modules

ATE9430T / ATE9430R / ATE9460 / ATE9461 all take VBUS 3.7 – 5.1 V. ATE9460 draws 500 – 800 mA (2.5 – 3.8 W) with VBUS on pins 53 / 55 / 57; ATE9461 draws 500 – 600 mA (2.3 – 2.8 W) with VBUS on pins 18 / 20 / 22 / 24; current for the 4K30 family is TBD. The ATE946X-KIT DEMO boards accept Type-C 4.5 – 12 V and step it down on the board; the module itself still runs on 3.7 – 5.1 V.

FAQ

Q1Can the video module run directly from 12 V?
No. VBUS accepts only 3.7 – 5.1 V, and more than 5.1 V damages the module. Step 12 V, 24 V or high-voltage USB-C input down with a DC-DC converter on the carrier first.
Q2How much power does the module use, and how big should the supply be?
ATE9460 uses 2.5 – 3.8 W and ATE9461 2.3 – 2.8 W at VBUS 5.0 V; figures for the 4K30 family are TBD. Allow at least 1 A per module on the carrier.
Q3The evaluation kit takes 12 V over Type-C. Why can't the module?
The ATE946X-KIT DEMO boards include a step-down stage: Type-C 4.5 – 12 V comes in and is reduced before it reaches the module. Your own carrier needs the same stage.

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