Apple Iphone 15 devices are not getting charged via USB-C port in a digital AV adapter

What you’re seeing is related to how power negotiation and USB-C routing are handled by the iPhone 15 and these adapters — especially when trying to use both HDMI output and charging simultaneously.

The core issue: most USB-C Digital AV adapters are designed with Macs or iPads in mind, where power and data are negotiated differently. On iPhone 15, which is still relatively new to the USB-C world, the device can be picky — especially if the adapter is trying to handle both HDMI and power while also offering a USB-A data/audio path. When you plug in your charger, the iPhone sees a conflict in power/data routing and shuts down both charging and HDMI/audio output, which is why everything stops working.

Regardless, there still a few other things you can try until this gets resolved:

• Try Apple’s official USB-C Digital AV Multiport Adapter (Model A2119): This is the only adapter that has a reasonable success rate with iPhone 15, though it’s still not perfect in all scenarios. You’ll want to plug the charger (at least 20W USB-C PD) into the USB-C port before connecting the adapter to the iPhone. Then, plug in HDMI and USB-A if needed. This order sometimes helps avoid the failure you're seeing.
• Use a powered USB-C hub with HDMI that explicitly lists iPhone 15 compatibility: Look for USB-C hubs that have a PD passthrough and explicitly mention support for iPhone 15 in reviews or product descriptions. Some from Anker and HyperDrive are beginning to account for this.
• Use AirPlay for AV instead: Since you're outputting audio and video, consider an Apple TV or AirPlay-compatible device.
• Use a Lightning to USB-C adapter (Model A2119 + Lightning AV): This sounds backwards, but some users have used their old Lightning AV adapter with the USB-C to Lightning adapter (official Apple one) to retain compatibility with iPhone 15.