jamesportman
Member
Hi,
I've had a look around and can't see anything definitive, so any help is appreciated.
I have set up a 1.5F super cap which keeps the teensy running for a short time after power is removed.
If you wait for the cap to discharge then reconnect the power, the teensy starts up fine.
However, if you remove the power, wait a few seconds for the teensy to drop out, then reconnect while the cap still has maybe 2 volts left, the teensy will not fire back up.
The voltage will be back to up to 4.8-5v so it should be running really.
It would be equivalent to powering up a teensy with 2 volts on a bench supply then ramping the PSU up to 5v quite quickly.
Is this brown-out protection or similar?
Any ideas about how to work around it?
I've had a look around and can't see anything definitive, so any help is appreciated.
I have set up a 1.5F super cap which keeps the teensy running for a short time after power is removed.
If you wait for the cap to discharge then reconnect the power, the teensy starts up fine.
However, if you remove the power, wait a few seconds for the teensy to drop out, then reconnect while the cap still has maybe 2 volts left, the teensy will not fire back up.
The voltage will be back to up to 4.8-5v so it should be running really.
It would be equivalent to powering up a teensy with 2 volts on a bench supply then ramping the PSU up to 5v quite quickly.
Is this brown-out protection or similar?
Any ideas about how to work around it?