LM5060-Q1: How to implement it the LM5060 controlled 4 MOSFETs ? Is there reference design?

Hi Lewis,

Thanks for reaching us.

I will get back on this on Monday.

BR, Rakesh

Hi Rakesh,

Thanks a lot for your reply. It looks very helpful for me.

So if I've current shunt resistors in used, can I also refer to the article of Choosing the right sense resistor layout and the TPS24772EVM-685 user guide for reference guide? It should be with same principle for the design in placement and layout.

https://e2e.ti.com/blogs_/b/powerhouse/archive/2014/10/30/choosing-the-right-sense-resistor-layout

http://www.ti.com/lit/ug/slvuag2/slvuag2.pdf

Thanks much,
Lewis

Correct. Lewis.

What is your application use case? end product ? protection requirements ? and system specifications ?

BR, Rakesh

Hi Rakesh,

Appreciate for your feedback.

As I know it's used in a computing system in automotive and the protections of OC/OV is needed for requirement.

Excuse me for more questions.

I'm thinking of the difference of configurations of the MOSFETs front end with current sense resistors.

e.g.

Config. 1. The current sense resistors use 4pcs and the MOSFETs use 4pcs, it's easier to make the shunt resistor to MOSFETs the placement & layout neat and symmetric on same layer.

=> The power current flow could go more average through the MOSFETs, the sense resistor may need to more take care of the layout for accuracy.

Config. 2.  Use 1pcs sense resistor(if power rated is enough) and 4pcs MOSFETs, it seem to be harder for well-organized the placement & layout on same layer.

=> The current goes through the MOSFETs could have higher tolerance than config.1, however, the sense is easier to do because only 1 shunt resistor.

For overall consideration, looks like the config. 1 might be better, because the MOSFETs would be more safe due to less impact from the trace impedance than config. 2.

What do you think?

Thanks much,

Lewis

Hi Rakesh,

Got it and thanks a lot for your support.

Thanks much,

Lewis