the MC33063A SW voltage is only 40V, so i think it can't use for SEPIC at your condition. you can have a look at LM5001, there are several designs about sepic using this device, such as " www.ti.com/.../PMP10151"
Part Number: TPS40170 Other Parts Discussed in Thread: LM5175
Hello All,
I came across TPS40170, which I wish to use in my application as DC\DC buck converter. I plan to use it in Automotive application. The aim is also to monitor the input currents…