Questions tagged [pole-compensation]
The pole-compensation tag has no usage guidance.
28 questions
1
vote
1
answer
72
views
Help with understanding the frequency response of a simple error amplifier
I am trying to obtain the frequency response of an error amplifier I designed the circuit of which is shown on the left and the obtained frequency response in Simplis can be seen on the right.
I am ...
- 25
1
vote
1
answer
213
views
Does pole-splitting narrow or widen the bandwidth?
Razavi gives the answer of why the compensation capacitor should not be placed between the gate and drain of M3 transistor.
Below are the quotations of his question and answer:
Question:
Explain why, ...
- 113
0
votes
2
answers
444
views
Pole location in simple RC circuit
Could someone help me to find the pole expression in the circuit shared below? The expression of the zero is: (Wz=-1/(R8*C2)), but I'm unable to find the pole location due to R8 (without it I would be ...
- 341
2
votes
1
answer
289
views
Compensator design for control systems
Currently, I'm working on linear control course from Nise's book. In the root-locus design chapter, some methods were explained for lag and lead compensator design which uses root-locus properties. ...
- 31
1
vote
1
answer
623
views
Relation of Eigenvalues with poles and zeros
I have modeled a system showing the following properties.
It has some negative eigenvalues.
All poles are placed in a left-half plane.
Some zeros are right-half plane.
In my knowledge, eigenvalues ...
- 31
6
votes
1
answer
251
views
How are formulas for "in the loop compensation" of capacitive load derived?
I tried to understand https://www.analog.com/media/en/analog-dialogue/volume-38/number-2/articles/techniques-to-avoid-instability-capacitive-loading.pdf
The feedback circuit is as follows:
so I have ...
- 584
0
votes
0
answers
729
views
Pole zero cancellation amplifier circuit
I've built the circuit which looks like this:
At the input comes pulses from 30 volts biased photodiode.
After adding parallel 4.7 nF and 10kΩ for pole zero cancellation everything works fine, in AC ...
- 103
0
votes
2
answers
228
views
How to find the value of capacitor in a compensated attenuator?
I am learning about compensated attenuators and I do not understand the way that the book suggests to create CF.
Is there a link or an image about the way that the book recommends to find the value ...
- 37
1
vote
1
answer
190
views
Flyback bode plot & type 2 comp
I'm trying to compensate a flyback boost circuit.
Unfortunately I seem to be failing to make the gain of the system ever cross 0 dB. I feel like I'm missing something obvious... Like a pole? I'm ...
- 3,586
4
votes
3
answers
950
views
Understanding on frequency compensation on driving capacitive loads with an op-amp
I am trying to understand an example circuit of frequency compensation on driving capacitive loads with an op-amp from:
https://www.allaboutcircuits.com/technical-articles/how-to-drive-large-...
- 41
0
votes
2
answers
2k
views
Understanding Electric Distribution Pole Anatomy
Can you please take a look at these two overhead distribution pole images (US and Canada) and let me know what are the 1,2,3, and 4 wires in each images?
Can you also let me know what is main ...
- 103
1
vote
0
answers
235
views
How does this compensation network work?
By accident I stumbled upon this Linear Technology application note (LT1074/LT1076 Design Manual):
https://www.analog.com/media/en/technical-documentation/application-notes/an44fa.pdf
Just for fun I ...
- 584
2
votes
1
answer
723
views
Regarding Miller compensation
Can anybody briefly explain about Miller compensation?
What is the need of pole splitting?
How does it improve both the unity gain bandwidth and phase margin?
0
votes
0
answers
284
views
Understanding type III compensation network for Buck-Boost DC/DC converter
I'm trying to design a circuit based on Linear Technology's LTC3533 Buck-Boost DC/DC Converter for my own project.
One of the last things I have left to do is to calculate the feedback loop ...
- 39
1
vote
0
answers
88
views
Phase Lag Compensator
I have a question on lag compensators in general.
Why do they increase both the rise time and the settling time? Is it due to the introduction of a slow pole?
Much thanks!
- 25
1
vote
2
answers
274
views
How is this pole compensated
I have an amplifier in a closed loop, the diagram looks as follows:
The DC gain is simple which \$ -Rf/R1 \$. If I make \$ -Rf=2\cdot R1 \$ the the DC gain is two. This is verified using AC analysis ...
- 319
0
votes
2
answers
3k
views
voltage to current converter using op-amp and MOS
I came across voltage to current (V2I) converter circuit. and I found Iout=Vin/R1. I have a few questions about it:
I believe the op-amp is in the negative configuration because v(3) & v(2) both ...
0
votes
2
answers
827
views
Type-III Compensator design for Half-Bridge DC-DC converter control [closed]
Can anybody guide/share some technical documents which can help me to design type-III compensator for DC-DC Half-bridge?
- 7
0
votes
0
answers
148
views
How to determine these resistors in 2-pole 2-zero feedback loop compensation
I'm trying to build a 2-pole 2-zero feedback loop compensation for controlling a full bridge dc-dc converter. It's my first time doing this and I'm following the book power supply cookbook. Book is ...
- 319
0
votes
2
answers
418
views
Does any practical RC circuitry exist which will perfectly cancel out a pole?
Firstly, some basic theory….
The transfer function of a simple low pass filter is:-
This transfer function has one pole. The gain goes from 1 to almost zero as frequency increases and the phase goes ...
user173271
3
votes
2
answers
2k
views
What does Dominant pole/Pole mean related to capacitors and filters or Electronics in general for intuitive understanding
I am trying to understand the feedback compensation techniques of DC-DC Buck converters. And I drift to more and more small questions which make me want to understand the basics of poles/zeroes/...
user220456
0
votes
4
answers
2k
views
Negative feedback and op-amp poles
I'm trying to get a better understanding of frequency compensation for op-amps. I'll start off with a very specific questions and then get into the context. For a certain op-amp, open loop gain is ...
- 15
12
votes
2
answers
980
views
What is causing this long tail in the transient reponse?
I have a fifth order transfer function for which I designed a controller using pole-zero cancellation technique on a root locus. I am targeting \$<5%\$ overshoot and \$<2s\$ settling time. ...
- 1,191
3
votes
1
answer
1k
views
Pole Zero Cancellation on a Root Locus
Problem Design a controller in the feed-forward path to minimize the effects of the two pairs of dominant poles. Use the pole-zero cancellation technique via the root locus diagram.
I have a 5\$^{th}\$...
- 1,191
1
vote
1
answer
365
views
-20 db/decade Gain Slope requirement for Stability?
I have been learning Analog Filter designing. I started with Loop Compensation in power supply. I came across a document. It ...
- 962
0
votes
1
answer
284
views
VFA vs. CFA Compensation Capacitor Comparation
Here, I am referring to voltage-feedback amplifier (VFA) and current-feedback amplifier (CFA). A basic schematic is given below for each.
I.) VFA
II.) CFA
I am curious about the position of ...
- 2,452
1
vote
2
answers
2k
views
Poles and Zeros of Two Pole Compensation
I am known with the basics of what poles and zeros of transfer function are and how to determine them, but I certainly don't know how to apply such poles and zeros to the gain curve, which describes ...
- 2,452
2
votes
5
answers
11k
views
Understanding of Dominant Pole Compensation
According to Miller Effect, within amplifying devices such as transistors that have inverting voltage gain higher that one, there should be increased input capacitance with increased voltage gain of ...
- 2,452