All Questions
9
questions
0
votes
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answers
60
views
Best power supply configuration
I'm making a power supply board with a buck converter for a 2A maximum and I would to know which is the best configuration between these two:
Is it best to put the input filter, a parallel damped LC ...
- 61
1
vote
0
answers
99
views
Input filter for switching regulator
I'm trying to create an input filter for a switching regulator for automotive application.
My aim is to make a supply board, where from 24V come out 12V (from the buck) then 10V and 5V (from two LDOs)....
- 61
2
votes
1
answer
1k
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Input filter to reduce conducted emissions caused by DC/DC converter
This material from ROHM explains the input filter design for a DC/DC converter.
The filter circuit is given below.
I understood the design of Lf, Cf2, Cd and Rd.
If you see the 3rd page (design of ...
- 2,593
0
votes
1
answer
103
views
Feedback loop design (buck converter): Output capacitance- effective value or nominal value to be considered?
In this TI datasheet of TPS62180, it was mentioned that the LC filter combination should be selected from a set of predefined values. I understand this is usually the case for an internally ...
- 3,032
1
vote
1
answer
76
views
Why is the input capacitor calculation different in TI datasheet?
Below is the input capacitor calculation from TI datasheet
Why is it different from standard buck calculation given below?
Another TI dcoument
- 3,032
0
votes
0
answers
174
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Load impedance simulation of buck converter
I would like to design a buck converter that will feed a printed circuit board that contains an inductive load like a DC motor and a relay, and some capacitive circuits like RLC filter. I have started ...
- 1,020
0
votes
2
answers
147
views
Placing an RLC input filter at the input of a buck
Since bucks have current spikes at the input side, it's best to use an input filter as you get better noise reduction than using an output filter (afaik).
Using a regulator IC however, that is, one ...
- 469
2
votes
1
answer
509
views
Filter before or after switching regulator?
I will be passing a power line (12V-60Vdc depending on the circumstance) with a lot of noise, 300Hz and above, riding on it through a buck regulator. I want to remove this noise with a filter. I don't ...
- 59
3
votes
1
answer
717
views
Is it useful to think of SMPS input capacitance as part of an LC filter?
I'm at the stage of learning about switched-mode power supplies that I'm focused on understanding the role of input capacitance. Just for background, I'm working with a buck topology for this ...
- 7,172