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+5V USB - 24V @0.25A Boost Converter PCB - Steven Wang

• +5V USB - Max. 24V Synchronous Boost Converter PCB @0.25A Max Load Current Consumption (6W)

  I/O:

• Input Voltage USB Connector (we only care about the following pins really):

  • +5V

  • GND

• Output Voltage Connector

  • Up to +24V

  • GND

• Features:

  • 5V-Max. 24V Boost Converter @ 0.25A (Maybe higher current?)

  • Status LEDs for both +5V and Max. +24V voltage rails

Note:

Output voltage should be easily adjustable (To standard values).

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• Output Voltage

  • Adjustable to these standard voltages:

    • 5V

    • 12V

    • 18V

    • 24V

  • Allowing for voltages in between is fine, but getting to these values would be nice!

• Output Current

  • Targeting 0.25A Output minimum at all adjustable voltage values

    • The highest minimum output power of which will be 24V*0.25A=6W

  • Being able to handle higher output current than this is absolutely fine under the requirement that it doesn’t vastly increase cost or development time.

• Efficiency

  • The use case for this board is take output from a 120VAC Single Phase to 5V USB standard power converter and use that output as the input to this board

  • Looking at a standard wall adapter I see they can do 1-2.5 A of output current at 5V so with some basic math, 24V*0.25A=6W & 1A*5V=5W, so efficiency is a concern in this case

  • Anything above 80% efficiency will work for us, but the higher the better for our use case!

  • Previously using a synchronous buck converter was considered imperative due to efficiency concerns, but a decision matrix should be used to evaluate it’s necessity vs cost.

• Cost

  • We don’t want cost to gate this project’s progress. Evaluate efficiency and difficulty vs cost via decision matrixes!

  • There are no hard requirements.

• Timeline

  • In order for this board to be most useful we would like it all debugged and functional before competition in May 2023 such that it can be utilized for debugging at that time.

  • Beyond that soft requirement it is entirely up to you. Once the Asana is back, we will utilize that to track progress.

• Input Output Connectors:

  • Vin

    • Take a pick of USB-C or whatever other standard USB you want.

    • Only need +5V and GND pins, (presumably no ERC +D and -D pins)

  • Vout

    • XT60PW-F

    • PWR and GND

• Other Features:

  • Status LEDs for both Vin and Vout voltage rails

  • Since the output voltage is adjustable, an LED indication to the user roughly where their output voltage is would be nice.

  • Bonus if you’re feeling crazy is roughly indicating the output current and other states of the converter though this is far from a requirement

RF Communications Emulator Project

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