Hello,
I am currently testing your TPS62736 device using the TPS62736EVM-205 evaluation module. I have adjusted the output voltage of the device to 3.7V by changing the values of R1 (499k, don't care about VIN_OK), R2 (4.02M), and R3 (9.31M).
While testing the pass-mode behavior of this device, I observe a periodic ~ 80ns switching event to GND on the SW pin. This event is present with all input voltages between the UVLO and 3.7V, output loads of "no-load" and 1mA (I have not tried other loads, but I suspect this pulse will still be present).
Is this a "feature" of the device?