LM5160-Q1: current capability

Daniel Wang (auto)

Expert 3110 points

Part Number: LM5160-Q1
Other Parts Discussed in Thread: LM5181-Q1, LM5181

Tool/software:

Hello team,

I want to check is LM5160-Q1 suitable for light load when current is lower than 0.1A.

Besides, do you have calculation sheet used for fast design, could you share if you have?

Thanks.

over 1 year ago

0 David Baba over 1 year ago

TI__Mastermind 39080 points

Hello Daniel,

If your max IOUT is 0.1A there are other options. Not sure what specification you are trying to meet?

There is a design calculator, see link below.

LM5160DNTBK-CALC Calculation tool | TI.com

David.

0 Daniel Wang (auto) over 1 year ago in reply to David Baba

TI__Expert 3110 points

Hello David,

Thanks for your reply.

Below are their requirement, the max transient voltage is 60V, which is used in 24V system

I checked the roadmap, found LM5181-Q1 and LM6168-Q1 are suitable as well, kindly ask for your recommendations.

Thanks

0 David Baba over 1 year ago in reply to Daniel Wang (auto)

TI__Mastermind 39080 points

Hello Daniel,

do you need an isolated output? If so, suggest the LM5181.

hope this helps,

David.

0 Daniel Wang (auto) over 1 year ago in reply to David Baba

TI__Expert 3110 points

Hello David,

I have one more question:

How to calculate the output voltage and number of turns of the primary auxiliary winding in the isolated power supply of the Flyback topology, there is no relevant formula in the specification of LM5181-Q1.

Thanks.

0 EricLee over 1 year ago in reply to Daniel Wang (auto)

TI__Guru 56861 points

Hello Daniel

You can find the LM5181 design calculator at https://www.ti.com/tool/download/LM5181DESIGN-CALC. Please find STEP2. Flyback Transformer.

-EL

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LM5160-Q1: current capability