Hello,
We're using a large number of TPS22946 (280psc) to control power supply for level shifters in our signal multiplexer design. And we observe that some of the switches are not turning on once EN signal is applied. It happens sporadically on 3-10 channels out of 280. When probing with oscilloscope, once EN is set, there seem to be no signs of overcurrent protection, voltage stays zero. After couple of power cycles the issue for particular channel resolves and correct operation can be observed. But later on it comes back again.
In our design we're not using OC output and it is left floating. Can it be related to the issue we observe?
Thank you for any information.
Best Regards,
Oleksandr