LMR38020: Inverting buck boost

Brian Wang0928

Genius 14000 points

Part Number: LMR38020
Other Parts Discussed in Thread: LM5161

Tool/software:

Team, Is this device able to implement the IBB as below condition? thanks.

Vin：48V

Vout：-15V

Iout：300mA

over 1 year ago

0 Richard Fu22 over 1 year ago

TI__Mastermind 30915 points

Hi Brian,

Yes, it should be able to support the IBB application. If there is a chance that the input may rise higher than 48V, you may also promote the LM5161, which is 100-V, 1A rated device.

Thanks,

Richard

0 Brian Wang0928 over 1 year ago in reply to Richard Fu22

TI__Genius 14000 points

Thanks. Yes, customer agree with 100V offer good design margin for IBB.

Is there related ref. design or design calculation tool of IBB with LM5161?

Regards

Brian

0 Richard Fu22 over 1 year ago in reply to Brian Wang0928

TI__Mastermind 30915 points

Hi Brian,

We do not have a reference design currently with the IBB. Please refer to the application note to get started:

https://www.ti.com/jp/lit/an/snva856b/snva856b.pdf?ts=1724372125755&ref_url=https%253A%252F%252Fwww.google.com%252F

Thanks,

Richard

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LMR38020: Inverting buck boost