Negative to Negative DC-DC

A.S.Bhushan

Expert 1060 points

Other Parts Discussed in Thread: TPS61170, LM5001

We have to design Negative to Negative DC-DC converter as per below

Vin: -15 to -30Vdc

Vout: -15V, 50mA

Please suggest me any IC or design to meet the above requirement.

over 5 years ago

0 Garrett Roecker over 5 years ago

TI__Mastermind 21720 points

HI A.S Bhushan,

Thank you for reaching out with your questions.

I think the TPS61170 might be a good solution for this application.

Here is an article that discusses how to design the TPS61170 as a negative input to negative output converter.

Thanks,

Garrett

0 Jasper Li over 5 years ago

TI__Mastermind 46905 points

Hi A.S.Bhushan,

as the input voltage could be up to -30V, you would need to select a device with higher than 30V input voltage, such as LM5001. and the circuit is similar as the article suggested by Garrett.

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Negative to Negative DC-DC