LM5148: LM5148

Ramaprasad K S

Part Number: LM5148
Other Parts Discussed in Thread: LM5117

Hi,

Can we control (regulate) voltage and current in LM5148 IC?

LM5148 IC having current and voltage controlled mode?

0 Orlando Murray over 2 years ago

Hi Ramaprasad,

LM5148 does not natively support constant current CC output, it does have peak current limiting.

You can add an external circuit for CC operation, see appnote below.

The LM5117 is actually better for CC/CV operation.

Hope this helps,

-Orlando

0 Ramaprasad K S over 2 years ago in reply to Orlando Murray

Hi Orlando,

Any alternate is there for LM5117 ? Because we are plan to use Input is 15V and Output is 13.8V.

We need better duty cycle also LM5117 will not meeting that duty cycle.

Can you suggest better alternate of LM5117 with higher duty cycle?

0 Ramaprasad K S over 2 years ago in reply to Ramaprasad K S

Any alternate is there for LM5117 ? Because we are plan to use Input is 15V and Output we want 13.8V and Iout is 20A.

We need better duty cycle. LM5117 will not meeting that duty cycle.

Can you suggest better alternate of LM5117 with higher duty cycle?

0 Orlando Murray over 2 years ago in reply to Ramaprasad K S

You can use LM5148 with that external circuit shown in figure 1.

However LM5117 will work with that duty cycle if you lower the switching frequency to 150kHz or less.

Hope this helps,

-Orlando

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