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OpenMarine › MacArthur HAT › General discussion v
Max voltage

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Max voltage
gordan Offline
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#1
Question  2024-06-09, 11:49 AM
Hi,

   Power management - MacArthur HAT v1.2 Documentation (macarthur-hat-documentation.readthedocs.io) clearly says that the input and SW voltage should be 12V. However we know that the voltage provided by alternators is higher than 12V and that the Power module Pololu - 5V, 3.2A Step-Down Voltage Regulator D36V28F5 accepts up to 50V.

  What is the actual maximum voltage that may be safely used for power and SW input? 

Thanks!
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Adrian Offline
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#2
2024-06-10, 05:04 AM
While the power module could handle higher voltages, the protection circuit on the MacArthur HAT is designed for a 12V system. The maximum voltage is around 15.6V, defined by the TVS diode D1.
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