EK-TM4C1294XL: Target VBUS

Victor L-S

Part Number: EK-TM4C1294XL

Hello Amit,

Rather than using the "always on" +5V on the X11-2 connector, I was hoping to use the controllable TARGET_VBUS to power my daughter card. Upon examining the schematics I discovered the trace to X11-60 is a 6 mil rendering it unusable without some kludging.

Might you tell me what the purpose of this line is?

Thank you,

Victor

over 8 years ago

0 Amit Ashara over 8 years ago

TI__Guru**** 244400 points

Hello Victor

X11 is the bread board connector so that the LaunchPad can be connected with a right angle connector to a bread board to allow interfacing the maximum number of signals from the Main MCU.

0 Victor L-S over 8 years ago in reply to Amit Ashara

Intellectual 925 points

Hello Amit,

Let me rephrase...

Was TARGET_VBUS (X11-60, 6 mil trace) intended to provide power or simply to indicate power. Elsewhere the trace is 15 mil.

Thanks,

Victor

0 Amit Ashara over 8 years ago in reply to Victor L-S

TI__Guru**** 244400 points

Hello Victor

It is meant to provide power. However do note that LaunchPad are meant for evaluations only. So the rules can be relaxed.

0 Victor L-S over 8 years ago in reply to Amit Ashara

Intellectual 925 points

Hello Amit,

Yes...very relaxed in this case :)

Thanks,

Victor

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EK-TM4C1294XL: Target VBUS