All Questions
12
questions
3
votes
6
answers
1k
views
What is an intuitive explanation on how a buck and boost converter transfer energy?
I can understand how a buck converter can step down the voltage but only with the formulas. I am struggling to understand intuitively how the inductor stores energy and releases it in a way so that ...
- 31
7
votes
2
answers
748
views
How do buck regulator modules with integrated inductors manage to be so small?
This 20 A buck regulator module from TI is 6.5x7.5x4 mm and has an internal 330 nH inductor.
This 6.5x6.5x3.1 mm 330 nH inductor from Coilcraft has an RMS current rating of 18.8 A and is the smallest ...
- 95
2
votes
1
answer
56
views
Buck converter inductor waveform having high ripple and slow charging and fast discharging [closed]
The following shows the voltage (green) and current waveform (yellow) across an inductor in a buck converter designed to step down 30 V to 15 V with 0.2 A output current.
The inductor values according ...
0
votes
1
answer
75
views
Buck and boost converter inductor confusion
I have seen that a boost converter uses the spikes of an inductor to step up the capacitor voltage as this spike is stored on the capacitor.
Why don't we get a similar effect in the buck converter? A ...
- 671
1
vote
2
answers
1k
views
Minimum Inductance for Buck converter to maintain CCM
In a buck converter, consider all components to be ideal; the
output voltage is kept constant at 5 V by controlling the duty
cycle. The input voltage varies between 10 V to 40 V, the
output power is ...
4
votes
2
answers
899
views
What is this ringing in the inductor current?
I am working on a buck-boost converter and I see this ringing in the inductor current. It happens on turn on of the high side FET (See attached Image). First of all is this ringing normal?
Is there ...
0
votes
3
answers
379
views
Multi-phase buck converter inductor selection
This question is regarding the inductor design (uncoupled) in a multiphase buck converter.
In a multiphase converter, the inductance per phase requirement is higher than the corresponding single phase ...
- 3,032
5
votes
2
answers
1k
views
Where does the inductor energy go in a buck converter when the load is suddenly disconnected?
It is known that inductors resist a change in current. So, my question is that in a buck converter, what prevents the output voltage from going all the way up due to inductor resisting a current ...
- 109
0
votes
1
answer
185
views
Buck Converter - Closed Loop - Effect of decreasing inductance and increasing capacitance
Output voltage as a function of output current is plotted from oscilloscope data for a closed loop buck converter.
Switching frequency is kept the same in both the cases.
CASE 1 : Inductance = 2....
- 13
1
vote
2
answers
2k
views
How do I understand the effect when the load current is over the inductor's saturation current?
Got a question about the effect after the current over the saturation current in a buck DC-DC regulator.
I'm thinking of a theory that due to the fact that the inductance will be downgraded if Isat ...
- 681
3
votes
5
answers
608
views
Ripple current in synchronous buck converter
I am designing a synchronous buck converter and I am at the bread board stage in my design. I wanted to check the current waveform through the inductor, but I do not have a current probe available. I ...
- 314
0
votes
2
answers
1k
views
AC Power loss of inductor in a buck converter
I have a custom piece of equipment that gives a value for AC power loss (Pac) for an inductor plugged into an internal buck converter circuit. The custom equipment has an oscilloscope which is ...
- 314