LM5015 in Isolated 5W VIN=6-11Volt VOUT=12Volt design

Rupert Penderis

Other Parts Discussed in Thread: LM5015, LM5160

I am looking at using the LM5015 in an Isolated 5Watt VIN=6-11Volt VOUT=12Volt design.

I have looked at numerous other TI regulators and this seems to be the only one in the price range that fits the voltage/power parameters.

It does not seem to be supported by Webench - why is this?

Has anyone used this and will I achieve 5Watts when the input is at 6Volts?

I am concerned at the 1A switching limit on the internal FETs and the switching efficiency.

over 10 years ago

0 EricLee over 10 years ago

TI__Guru 58461 points

This is old device started before WEBENCH ramped up. That's why.

6V in, 5W out seems risky since the switch current limit is only 1A. You have to consider efficiency and the ripple current.

Please visit LM5160 product folter. I think this device supports your requirements.

Regards,

0 Rupert Penderis over 10 years ago in reply to EricLee

Prodigy 20 points

Hi Eric
Thanks for your reply about Webench - I was wondering.
Unfortunately, your suggested IC will not work as it is not isolated and it is a Buck (step-down) converter.
As I am looking for an increase in voltage in some areas a forward or flyback converter will work.
I will continue looking.
Best regards

0 EricLee over 10 years ago in reply to Rupert Penderis

TI__Guru 58461 points

LM5160 supports Fly-Buck configuration. http://www.ti.com/lit/an/snva727/snva727.pdf

Regards,

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LM5015 in Isolated 5W VIN=6-11Volt VOUT=12Volt design