Dear support team!
In our application we use the TPS62175 with a very low output current (120mA) and therefore in DCM -> the device should then remain in power save mode.
According datasheet the device shall then use the minimum on-time of (80ns).
When calculation the corresponding switching frequency I got the following result:
f_PSM = 2*Iout / (ton² * Vin/Vout ( (Vin-Vout) / L) ) = 2*0.12A / (80ns² * 12V/5V ( (12V-5V) / 10uH) ) = 22.3 MHz
For me it seems quite a high result (typ. the DC/DC converter should have 1MHz). Is this correct or what is my mistake?!