Negative input DCDC solution or design

Yen Ting Chu

Intellectual 1350 points

Other Parts Discussed in Thread: PMP20371

Hi Team,

May I know if there is any suitable solution, either device or reference design, for the following spec?

Input voltage: -48V (negative 48V)

Output voltage: 12V

Output current: 8A

Thanks,

Best regards,

Andy Chu

over 8 years ago

0 Youhao Xi over 8 years ago

TI__Guru* 79835 points

This requires an inverting buck-boost, and a close ref design is PMP20371 (see www.ti.com/.../PMP20371)

0 Yen Ting Chu over 8 years ago in reply to Youhao Xi

TI__Intellectual 1350 points

Hi Youhao,

Thanks for your feedback. I see the Vout in the reference design is 14.5V. How should the hardware designer modify the schematic, such that output voltage would be 12V? Thanks.

Best regards,
Andy Chu

0 Youhao Xi over 8 years ago in reply to Yen Ting Chu

TI__Guru* 79835 points

Hi Andy,

Since we already communicated through email, and the issue has been resolved a few weeks ago, let me close this thread here.

Thanks,
Youhao

Power management

Power management forum

Negative input DCDC solution or design