DC DC converter lm5030 current sense

[Arbit1]

does anyone know how to connect current sense pin on lm5030

 

[KlausST]

Hi,

the datasheet knows.

I guess you need to be a bit more precise with your question.

Klaus

 

[Easy peasy]

yes, as above as shown, the current signal, possibly with a light RC filter ( 330 ohm, 220pF ) is fed to the pin as shown above

 

[Arbit1]

View attachment 171076
yes, as above as shown, the current signal, possibly with a light RC filter ( 330 ohm, 220pF ) is fed to the pin as shown above

Thanks, do you have any idea how value of these current sense resistor and capacitors is determined

 

[Easy peasy]

yes, of course I do ....

 

[KlausST]

Hi

Unless you give more details: it seems you don't want to read the datasheet on your own. You want us to read the datasheet and write down the informations here in your thread.

So please tell us more about what you did do far and what worries you in detail.

Klaus

 

[Easy peasy]

1st you ask how is it connected, then you ask another question as to how to calculate sizes - how about learning to read data sheet and app notes - of which there are plenty online ... ?

 

[cupoftea]

here is a push pull situation for you to run on the free ltspice simulator.
You can use it to change the sense filter and get some idea. Hardware is best but in the first place you can use the sim.

Give me your spec and i will design it for you and give it in the sim....unless you want to do this yourself, its up to you

 

[cupoftea]

Basically, if you are filtering a current sense resistor signal, then you need to use as much filtering as possible, but still retain the basic shape and magnitude of the signal........and you want to get rid of the leaading edge spike....but if the controller has LEB time then you dont need to completely get rid of the leading edge spike.