The scenario
A drone requires reliable GPS positioning; this circuit powers the GNSS module from a 12V battery, provides an antenna connection, and ensures quick satellite reacquisition with a backup supply.
What is in this drawing
Read the decisions behind it.
01
LDO regulator for clean 3.3V supply
02
Schottky diode isolation for backup domain
03
Rechargeable backup battery on V_BCKP
Integrating a GNSS module into battery-powered drones or mobile platforms where low noise and fast time-to-first-fix are critical.
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