Hello,
I have a question about the TPS2421-2 startup reaction on the Fault signal (/FLT).
Whenever I set the enable Pin low (/EN) the component starts to switch on the output. But as you can see the /FLT is triggered (low).
My questions:
- Is this a normal behavior or just a circuit problem?
- Do you know why /FLT goes low?
Below I attached the schematic and the measurement results.
- Schematic:
- Measurement results:
Startup 1:
You can see the enable (/EN) goes low, the component starts drive the output.
But as you can see the /FLT is triggered (low).
Startup 1:
Same measurement as above.
In this picture you can see the effect.
Startup 2:
Same measurement as above.
As you can see, also on shutdown the /FLT signal goes low.
Shutdown 1:
You can see the behavior on shutdown.
Shutdown 1:
Same measurement as above.
As you can see, also on shutdown the /FLT signal goes low.
Thanks for your support!
Best regards,
Marc
