For DC to DC conversion like buck, boost or both, I think majority of them either controller with external power switch, or the monolithic with internal are running above hundreds of Khz up to Mhz range.
I'm aware that the inductor and the capacitors might be physically larger at lower frequency, other than these factors, are there other concerns like efficiency maybe if running < 100 Khz ? or maybe others ?
Please share some of your thought or experience regarding this.
Btw, maybe my Google-Fu is so lame, is there any synchronous rectification product that runs < 100 Khz ?
TIA
I'm aware that the inductor and the capacitors might be physically larger at lower frequency, other than these factors, are there other concerns like efficiency maybe if running < 100 Khz ? or maybe others ?
Please share some of your thought or experience regarding this.
Btw, maybe my Google-Fu is so lame, is there any synchronous rectification product that runs < 100 Khz ?
TIA