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EK-TM4C1294XL: Powering the microcontroller

user5028846
Prodigy 20 points
Part Number: EK-TM4C1294XL
Other Parts Discussed in Thread: TPS2052B

Good morning everyone.

I have a few questions to ask. I have been using the EK-TM4C1294XL to try some code to see how it performs using the ICDI Debugging port connected to my computer. Now i need to mount it to a prototype and power the microcontroller with a battery. To accomplish that, i've bought a LM7805 regulator using the fixed-output scheme to power it from a battery of 12V by the BoosterPack interface.

My first concern is that I can't find in the schematic the BoosterPack pin that i should connect the regulator's output to. The JP1 scheme (Power Control Jumper) doesn't show if the pin n°1 is mapped to another pin of the BoosterPack interface.

Also, should i care about TPS2052B not providing current limit protection using the LM7805? Must I also connect an specific GND to the regulator's GND ?

Finally, can I compile and run a program using the ICDI-Debug USB while powering the microcontroller with the BoosterPack interface?

I hope you have not been overwhelmed with my questions. 

I apologize for my bad english. it's not my native language.

I hope somebody can help me out.

Best wishes,

José

  • 0
    TI__Guru 72500 points
    Hello José,
    Welcome to the forum. First of all, you English is very good (much much better than my Spanish).
    Connect the 5V from the LM7805 to BoosterPack B1-1 and B2-1. Also connect GND from the LM7805 to B1-2 and B2-2. I suggest you protect the LM7805 with a fuse (2A fast blow should work). Remember to move the jumper on JP1 to "boosterPack". Yes you will be able to connect to the ICDI-debug USB and continue to debug.