I'm sure you've noticed that switching-regulator ICs come in a wide variety of frequencies. I would say that the typical range is kHz to 2. Whether you are working with a buck or boost topology in your SMPS circuit, the rolloff frequency of the output will be inversely proportional. View credits, reviews, tracks and shop for the Vinyl release of "Switch Mode" on Discogs. In the SMPS supplies where higher frequencies are used, a PWM or PFM controller may be used to regulate how the MOSFET, power transistor or thyristor is turned. To obtain a constant output DC voltage V2 a filter is required. The simplest type of filter is an LC-configuration. Usually the switching frequency is between. To prevent instability, it is necessary to operate in constant off-time mode. This is achieved with the HV circuit by connecting the timing resistor between. Switch-mode power supplies switch with a frequency that is either fixed, adjustable, or synchronized to an external clock. The value of the switching. My question is this: if I change the input frequency, will this effect the output voltage as higher frequencies in SMPS results in smaller inductors? In electronics, switching frequency refers to the rate at which an electronic switch performs its function. Switching frequency is an important design and. the influence of switching frequency on buck converter performance in terms of is a typical buck SMPS circuit with D-CAP3™ control mode.