MC33063A: SEPIC configuration, 10-24V in, 15V out

Rich Thompson

Part Number: MC33063A
Other Parts Discussed in Thread: LM5001

I'm looking for a cost effective regulator for a battery product where the input voltage could be 10-24V, and I need a regulated 15V output at around 150mA max,

I thought the MC33063A could do it, but I can only find examples of buck OR boost, not both. can it be done? are there examples? is there a better option?

Thanks

Rich

over 7 years ago

0 Jasper Li over 7 years ago

TI__Mastermind 46905 points

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"

0 Rich Thompson over 7 years ago in reply to Jasper Li

Prodigy 220 points

Hi Jasper

That's a shame as I already use the 33063. not sure how the SW voltage is exceeded in this condition?

Anyway, thanks, I'll check the LM5001 out instead

Rich

0 Jasper Li over 7 years ago in reply to Rich Thompson

TI__Mastermind 46905 points

refer this application for the SEPIC "www.ti.com/.../slyt309.pdf", there is SW voltage in page 2.

0 Rich Thompson over 7 years ago in reply to Jasper Li

Prodigy 220 points

thanks, that's very helpful

Rich

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MC33063A: SEPIC configuration, 10-24V in, 15V out