Hello All,
I'm using multiple TPS544C25 devices and power sequencing it.
All the 4 units looks good but CH3, 1.2V rails looks that it oscillates for some time before getting to the the final rails.
The sequence is CH2, CH1, CH3, CH4
What would you recommend testing to debug it?
Thanks,
SunSet
Hello Mathew,
unfortunately the problem is still there and is shown on multiple boards.
The configuration is below, and it shows how the Channels should get turned on.
The phase margin of a non working units is 60deg, while the gain margin is 13.7 dB.
Out of the configuration do you see any problem?
The second plot shows that CH3 (enable) for the channel shown in CH1 does not disable CH1.
Indeed Ch1 is on even if the enable is off.
Thanks,
SunSet
