Power net portal is a special schematic object used to define a power or ground net. Power ports allow you to conveniently indicate a power net at any location in the design. Power nets of the same designator automatically connect throughout your design #portal #power
A generic fixed inductor for rapid developing circuit topology. *You can now change the footprint and 3D model at the top level anytime you want. This is the power of #generics
@copilot Hello, I want to make an OTG card that allows a USB C to expand a USB A for data transfer and a USB C for fast charging and that this allows data transfer and charging automatically
Creating an OTG (On-The-Go) card that facilitates both data transfer and charging through USB-C and USB-A ports is a fascinating project. To achieve this functionality, you would essentially be designing a hub that can handle both data and power distribution efficiently. Here's an overview of the design considerations and components you might need:
USB-C for Data and Charging: You'll need a USB-C port that can handle both data and power. USB-C is capable of power delivery (PD) for fast charging as well as data transfer. You will require a USB-C controller that supports USB Power Delivery (PD) protocol to manage power direction and data flow.
USB-A for Data Transfer: The addition of a USB-A port for data transfer will require a hub controller that can manage USB data lines. This controller will orchestrate the data flow between the USB-C and USB-A ports.
Automatic Switching for Data and Power: To automate the process of data transfer and charging, you will need a smart circuit that can detect when a device is connected and whether it requires power, data transfer, or both. This might involve some sort of microcontroller or dedicated IC that can handle USB port detection and switching.
Power Management for Fast Charging: Incorporating fast charging through the USB-C port will necessitate a power management IC that supports fast charging standards (like USB PD). This IC must be capable of negotiating power delivery contracts to provide an optimal charging rate.
Given these considerations, here is a simplified connection strategy for your OTG card:
USB-C Port: This will be the main interface for connecting your OTG card to a host device or for attaching a device that needs charging.
Connect the USB-C port to a USB PD controller IC to manage power delivery for fast charging.
Also, interface the USB-C port with a hub controller that can manage data transfer between USB-C and USB-A.
USB-A Port: This serves as the output for devices requiring a USB-A connection for data.
Connect the USB-A port to the hub controller to manage data flow from the USB-C port.
For the hub controller and USB PD controller, there are several ICs available from manufacturers like Texas Instruments, STMicroelectronics, and Cypress that offer integrated solutions for USB power delivery, fast charging, and data management.
Keep in mind, in addition to the electronic components and circuit design, you will need an appropriate PCB layout that minimizes interference, supports high-speed USB data rates, and adheres to USB-C specifications for power delivery. Using a tool like Flux can greatly facilitate the PCB layout process, especially with features like Automated Impedance Control for high-speed differential pairs, which are essential for USB data lines[1].
This project requires careful consideration of the USB specifications, particularly around power delivery and data transfer protocols. Each component selected must comply with the standards to ensure compatibility and optimal performance.
Hey, I'm copilot! I can help you with all kinds of stuff in your project. Reach me at any time by tagging me on comments or in the chat with my handle, @copilot.
1y
Someone is typing...
Passive Components
Resistor Power Rating
Beta
Checks that the power traveling across a given resistor is under its rating with 50% headroom.
imanzi