Author Topic: RC filter design connected between current sense resistor and current sense pin  (Read 1514 times)

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Offline Arb32Topic starter

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Hi,
I wanted to design a RC filter connected between the current sense resistor and current sense pin for eliminating noises, I have gone through many articles and datasheet of lm5030 but didn't find how to select the values of R and C, I have attached a example here with another ic,here r19 is current sense resistor ,r22 and c13 form the rc filter,also attaching datasheet of ic
 

Offline Faringdon

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filter as hard as you can, without loosing the shape and magnitude of the sense signal........just get rid of the leading edge spike....use the simulator to help you......give me spec and i will send you sim....then you can experiemtn with rc filter values.

Its usually anywhere from 100p/100R to 1n/1k
'Perfection' is the enemy of 'perfectly satisfactory'
 

Offline Arb32Topic starter

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Thanks will try this soltion,if unable to do will send thesimulation file here
 

Offline Faringdon

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yes , here is sim in ltspice of push pull
You can experiment with sense filter
I think i sent it to you before but i cant remember, so i send again here.
'Perfection' is the enemy of 'perfectly satisfactory'
 
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