LM3481: Question about LM3481

Jimmy Huang

Part Number: LM3481
Other Parts Discussed in Thread: LM25118,

Hello：

now there are two questions about LM25118 + LM3481,

1、Bcuk boost converter, output is not stable 12VDC. When the input is 12VDC and there is no load, the output is only 9VDC

2、The efficiency of flyback is only 60%. When the input is 12VDC and the output is 48VDC, hang the load of 0.6A

LM25118 has been asked in another thread!!!

over 3 years ago

0 Harry Hofner over 3 years ago

TI__Mastermind 19595 points

Hello Jimmy,

Thanks for reaching out to us via e2e.

Unfortunately I cannot see the pictures you have added (I can only see three symbols, but not the actual content).

Please use the insert - Image/video/file function.

I will need as many details as possible: Schematics, exact part numbers of the components (transformer, FET, Diode, etc), Input and output voltages/currents etc.

Ideally, a screenshot of the primary inductor/transformer current would be helpful.

Thanks,

Harry

0 Jimmy Huang over 3 years ago in reply to Harry Hofner

Genius 3515 points

Hello Harry:

This is Schematics of project, I will let customer provide Input and output voltages/currents, Thanks!!!

0 Harry Hofner over 3 years ago in reply to Jimmy Huang

TI__Mastermind 19595 points

I have neither received the informtion about the Input and output voltages/currents nor heard back for two weeks, so I am closing this thread now.

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LM3481: Question about LM3481