Low power 12V to 15V Flyback converter with LM3481

Matt_1222

Other Parts Discussed in Thread: PMP10098, LM3481

Hello,

I'd like to build a DCDC converter from +12Vdc to +15Vdc isolated with 30mA output capability.

I have seen the low power schematics PMP10098 but I'd like something which works with +12VDC input and provide +15V output voltage.

Moreover, we require to get a good efficiency around 80% for this isolated conversion.

How can I update the schematics please ?

Thank you for your support.

over 8 years ago

0 Ambreesh Tripathi over 8 years ago

TI__Expert 6860 points

Hi Matt,

I created a schematic for your design need and also did some simulation . The attached schematic should be able to meet your requirements .

Depending on the isolation needs , you may chosse coupled inductor as a magnetics for the flyback .

May i know in what aplication you intend to use this design .

Doc Sep 19 2016 7-17 PM.pdf

--Ambreesh

0 Matt_1222 over 8 years ago in reply to Ambreesh Tripathi

Prodigy 160 points

Hello,

Thank you for your answer.
I wanted to simulate your schematic with TINA but the model of LM3481 seems to not work in transient.

Do you have a simulation file to share ?

Thank you for your support.

0 Ambreesh Tripathi over 8 years ago in reply to Matt_1222

TI__Expert 6860 points

Hi Matt,

I simulated the design in Simplis (www.simetrix.co.uk/.../demo.php) . I can share the simulated schematic if you can mail me at ambreesh@ti.com .

--Ambreesh

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Low power 12V to 15V Flyback converter with LM3481