TPS22958: Is Output voltage control possible with PWM?

Hi Nick,

Technically, the device will respond to a high and low signal as it is imparted on the ON pin but using this device here is not ideal. The major concern is that across our load switch portfolio, we have very few devices capable of switching fast enough to support a fast PWM signal which severely limits your frequency. Due to the soft start nature of the device, the time period has to be long enough that the triangle-like ramp up is effectively a square-like wave else your PWM duty calculations will be noticeably inaccurate.

Load switches are built to transmit DC power from input to output. Using these switches in a PWM application is not recommended but may be possible depending on your timing and voltage requirements

Thanks,

Shreyas

Hi,

Thank you for the quick reply.

This makes complete sense that these switches are not designed for PWM.

I will change the design to switch Mosfets directly.

Thank you very much for your help.