Power Connections; Example Boosterpack Connection With Devpack; Vbus Led (Ds6) And 3V3 Led (Ds7) - Texas Instruments MMWAVE-DEVPACK User Manual

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2.3

Power Connections

The DevPack is powered by the micro USB cable. However, the onboard LDO is enabled only when the
BoosterPack connected to the DevPack is powered. This is to prevent the DevPack from powering up
before the BoosterPack. This is done by looking for 3.3 V on the PGOOD_3V3 line available J4 connector,
pin#14.
When the two boards are powered, the VBUS LED (DS6) and 3V3 LED (DS7) glow, as shown in
SWRU506 – May 2017
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Figure 4. Example BoosterPack Connection with DevPack
Figure 5. VBUS LED (DS6) and 3V3 LED (DS7)
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Figure 5.
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MMWAVE-DEVPACK