Hardware
Rev 2 Oct.19
37
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2.9 Power Management
The mangOH Yellow has two primary power supplies (the micro-USB Client connector and Expansion connector),
and a rechargeable backup battery power supply option. The hardware can also be reconfigured to replace the
Expansion connector with the micro-USB Console connector as a primary supply.
illustrates these
power supplies, their voltage/current specifications, and how they supply various components on the
mangOH Yellow platform.
The power switch is used to turn the mangOH Yellow on/off, regardless of which power supply is being used.
Table 2-12: Power Configuration Changes
Change type
Change effect
Method
Change duration
Hardware
Change VIN source from expansion
connector power pin to micro-USB
Console connector.
Populate R809,
depopulate R800
Permanent
Table 2-13: Power Switch Options
Primary
power
connected
Battery
connected
Switch Position
(Toward center — ON
toward outside — OFF)
Result
No
No
Any
No power to board, switch has no effect.
Yes
No
Center (ON)
Primary power supplied to board.
Outside (OFF)
Board is off.
Yes
Yes
Center (ON)
Primary power supplied to board.
Battery recharges automatically.
Outside (OFF)
Board is off.
No
Yes
Center (ON)
Battery power supplied to board.
Outside (OFF)
Board is off.
