Questions tagged [error-amplifier]
The error-amplifier tag has no usage guidance.
36
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Error amplifier selection
I'm simulating the "voltage error amplifier circuit" referenced from this article
In the article, "Vcontrol" will drop to zero when "Vout" is larger than the reference ...
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1
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Why is this LDO circuit not working?
I am trying to generate 5 V with this circuit for a load of 100 mA with a 2% tolerance in the output voltage. I don't want to use LDO ICs due to various reasons.
My intention here is to enable/disable ...
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1
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UC3842 optocoupler feedback confusion
I am having a slight confusion regarding the selection compensation pin of the UC3842 IC and the current mode control system given in the datasheet.
Why is there an RC combination at the feedback of ...
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Understanding this linear series-pass regulator circuit
Please refer to the schematic extract above which is the positive half of a bipolar voltage regulator in an amplifier. It is a mostly classic design but there is a part I don't understand. The part I'...
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Building the Error amplifier circuit part of UC3843
I am trying to build an error amplifier circuit on PSIM almost identical to the
In the datasheet, they used
Now, I want to ask in what ways is different than a normal Op-Amp element in PSIM.
...
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1
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555
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DC-DC converter error amplifier output
I am new to DC-DC converter electronics. I was wondering what the output of the error amplifier/compensator looks like.
Is the output of the compensator being driven to the Vref value set on the non-...
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How come I'm not getting the same output at the EAout, with the unity-gain buffer EAOUT output follows the +IN input
The EAout pin does not output the same signal as +IN, the signal is coming from a voltage divider after full bridge rectification
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Need help understanding error amplifier compensation
This application note (for the PWM controller I am using, UC3825B) details about error amplifier compensation for the built-in error amplifier.
It says it will be compensated to cross 0 dB at (...
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The output of PI controller using opamp is not working [closed]
I am designing a closed loop system for dc-dc converter for that I am using error amplifier and pi controller. For error amplifier and PI controller I am using OP177A opamp. The error amplifier ...
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1
answer
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Comparator vs Error amplifier vs OP-amp [closed]
Could you do me a favor? It is my first time to use "StackExchange".
I wonder the different point of these three components.
Comparator vs Error amplifier vs Op-amp (and OTA)
As I found they ...
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1
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369
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TL494 error amplifier pin maximum voltage input
I'm designing a 60V SMPD for my CNC milling machine using a TL494.
I've have successfully driven the gate drive transformer which can in turn drive the MOSFETs. I am able to get 60 up to 70V output ...
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Total voltage error at the output of the Op-Amp
I have this circuit (shown below), I need to calculate the total error voltage at the output of the Op-Amp due to R3 and Vos.
U1 is the LM741, which has Vos = 5mV and ib = 80nA.
Till now I’ve ...
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666
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UC3843 Clamping Error Amplifier Voltage
I'm trying to design a constant current solenoid driver using UC3843 PWM IC.
The datasheet is available at https://www.ti.com/product/UC3843
Since I'm only utilizing constant current function using ...
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3k
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Error amp compensation on pwm controller
I'm trying to build a half bridge smps for 325 VDC to 30 VDC using SG3525 controller IC.
I have no idea on how to use the error amp on this chip, especially the compensation pin.
[
[
I have seen in ...
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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 ...
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