降压开关整流器

在降压器中的基本要求是降低输入电压。虽然线性稳压器可以满足这一需求，但并不能实现高效。基于“BUCK”的开关整流器现在已经出现并应用了一段时间，便利，易于应用的器件使实际电路更易实现。文中对降压开关整流器的实现作了阐述。ApplicationNote35August1989Step-DownSwitchingRegulatorsJimWilliamsAsubstantialpercentageofregulatorrequirementslostinthisvoltage-to-current-to-magneticeld-to-cur-involvesteppingdowntheprimaryvoltage.Althoughrent-to-charge-to-voltageconversion.Inpractice,thelinearregulatorscandothis,theycannotachievethecircuitelementshavelosses,butstep-downefciencyisefciencyofswitchingbasedapproaches1.Thetheorystillhigherthanwithinherentlydissipative(e.g.,voltagesupportingstep-down(“buck”)switchingreg