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8.
Power Management Overview
8.1 Block Diagram
The 96Boards CE specification defines how power arrives to the board and few supplies that the board needs to provide.
The on board power requirement for each 96Boards implementation depends on the SoC and the set of peripherals specific to
that implementation.
The SD 600eval board uses three buck regulators U16, U17 and U18.
U17 generates [email protected]. This voltage feeds power to PMIC PMM8920, USB HOST power limit switches and provides power to
the Low Speed Expansion Connector.
U18 generates 4.5V@ 5.5A. This is supplementary supply for V
PH
supply of PMIC, to enhance the current capability.
U16 generates 3.3V@2A. This voltage feeds to 3.3V compatible devices on SD 600eval board.
PMM8920 generates up to 31 different voltage rails on SD 600eval board.
8.2 DC Power Input
The 96Boards CE specification calls for a power to be provided to the board in one of the following ways:
•
An 8V to 18V power from a dedicated DC jack.
The SD 600eval board supports this requirement through the use of J2, ‘SYS_DCIN’ power connector.
Note:
The SYS_DCIN can be as low as 6.5V on the SD 600eval board.
•
An 8V to 18V power from the SYS_DCIN pins on the Low Speed Expansion Connector.
Note:
The SYS_DCIN can be as low as 6.5V on the SD 600eval board.
The SD 600eval board supports incoming power through this connector.
•
A USB Type C port at 5V.
Note:
The SD 600eval board does not implement USB Type C port and cannot be powered over USB.
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