AC to DC without transform

KJ Liu

Other Parts Discussed in Thread: UCC28740, UCC28C43, UCC28600, UCC28910, UCC28730, UCC28881, UCC28700, UCC28880, UCC28722, UCC28C42, UCC28911

Hi Sir,

Since the area concern , my ask ask that the AC DC solution that doesn't need transform. Is there any advice and the spec is as below

VAC: 80~220

Vout: 24 or 48v

power :60w

over 7 years ago

0 John Stevens over 7 years ago

TI__Expert 7395 points

KJ,
Are you saying this is a non-isolated design? You could do an AC/DC buck with a controller like UCC28C43 or you could do a non-isolated flyback with UCC28600 or UCC28740?
Besides space, what other performance is important to you?
Regards,
John

0 KJ Liu over 7 years ago in reply to John Stevens

Intellectual 530 points

LT9602_CN.pdfHi John,

Yes, I am talking about non-isolated design , it looks the UCC25C43 still needs the transform as flybuck structure or it could support other structure. My customer is looking the structure as attached

0 John Stevens over 7 years ago in reply to KJ Liu

TI__Expert 7395 points

KJ,
We have some AC/DC buck designs. You could use our UCC28730, UCC28C42 family, UCC28700, UCC28722, or similar. For lower power designs you could use UCC28910, UCC28911, UCC28880, or UCC28881 as an AC/DC buck.
See these reference designs for use case examples:
www.ti.com/.../PMP20686
www.ti.com/.../PMP10783
www.ti.com/.../PMP10833

Regards,
John

Power management

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AC to DC without transform