Das Szenario
A designer needs a SEPIC converter schematic to step up/down a 4.5–12V input to a regulated 12V 1A output using the LM3478 controller.
Was diese Zeichnung zeigt
Die dahinterstehenden Entscheidungen verstehen.
01
Use SEPIC topology for input voltages that can be above, equal to, or below the output
02
Select 100µH inductors and 10µF coupling cap to handle 1A load at 500kHz switching
Battery-powered applications where the input voltage varies widely and must be boosted or bucked to a fixed output.