Hello, I am designing a small board with the LS1012A ARM Processor. The board will likely consume about 16W of power. I will need to design a reserve power circuit to supply power to the board for a short amount of time. Does NXP have any devices that I could use to monitor the input power and switch over to some supercaps to provide a short time of power to the board, say 2 seconds or so, enough time for the Processor to finish what it was doing and go through the power down sequence of the Linux OS.
Thanks,
Joe
Solved! Go to Solution.
Jose,
Hello, thank you very much for responding to my post. This is very helpful.
Have a great day,
Joe
Hi Joe,
The LS1012A by itself have a 1W typical power dissipation, unfortunately I do not have access to the total power consumption of the LS1012ARDB-PB Development board, but you can enter a new community thread in the QorIQ community to ask this question, you can find this community in the following link: https://community.nxp.com/community/qoriq?tid=community
Have a great day,
Jose
Hi Joe,
There is a reference design board for the QorIQ LS1012A using the VR5100 as the power management IC I charge of powering the system according to the LS1012A requirements, you can find details of the reference design in the reference manual that you can download from the following link: https://www.nxp.com/support/developer-resources/software-development-tools/qoriq-developer-resources...
Plus, you can find the schematic and board design files by downloading the LS1012ARDB-PB Design files (REV D) on the following link: https://www.nxp.com/support/developer-resources/software-development-tools/qoriq-developer-resources...
The VR5100 have an integrated circuit used as battery backup:
From the On mode, when the voltage at VIN drops below the undervoltage falling threshold, UVDET, the state machine transitions to the Coin Cell mode.
The LICELL pin provides for a connection of a coin cell backup battery or a “super” capacitor. If the voltage at VIN goes below the VIN threshold (VTL1), contact-bounced, or removed, the coin cell maintained logic is powered by the voltage applied to LICELL.
Check the VR5100 datasheet for more details: https://www.nxp.com/docs/en/data-sheet/VR5100.pdf
Have a great day,
Jose
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Hello, do you know the power consumption for the LS1012ARDB-PB Development board? I find it very exciting that it use Power Over Ethernet.
Joe
Jose,
Hello, thank you very much for responding to my post. This is very helpful.
Have a great day,
Joe