User's Manual

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ABOUT THE DEVELOPMENT BOARD
Power supply
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Power supply
The development board provides a 3.3V
DC
switching power supply. Either a bench
power supply or an AC wall adapter supplies input power to the development board.
The required input voltage range is 9–30V
DC
.
Input power jack,
J1
The input power jack, J1, is a barrel connector that accepts 9-30 VDC. The power
jack is labeled J1 on the development board. This figure schematically represents
the power jack’s polarity:
Input power
supply
The output current of this regulator is limited to 3 amps and the Connect Wi-Wave
module draws no more than 1.5 amps. Using these values as a guideline, and using
an 80% efficiency for the switching regulator, the input power supply should be
rated to provide at least 6 watts of power.
Important: The development board does not use USB power. You must always use
the input power jack, J1, to power the development board.
Power supply
Input power jack, J1
Ground 9-30VDC +/- 5%