Questions tagged [ripple]
Small unwanted residual periodic variation of a direct current (dc) output.
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Why is an inductor rather than a capacitor used to smooth switch mode regulators
I understand (at least at a high level) how to use both capacitors and inductors to reduce noise but I don't understand the advantages/disadvantages of each approach or why one is chosen over the ...
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Small-Ripple Approximation In Buck Converter Analysis
In almost all DC-DC converter books, they introduce the small-ripple approximation to make the derivation of the the Vout-Vin relationship easy.
Usually, they assume that the output of the converter ...
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Issue from my buck/boost converter
After my simulation, I am getting this in my output, which does not look good at all. I find it difficult to find a spice model for DC/DC isolator that can give me a positive, negative supply, and ...
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Delay of ripple carry adder
I denote delay timing as "@ value". As you can see the picture above, C_in0(carry in 0), A0(input A's 0th bit), and B0 are initially ready so there is no delay which means they all have @0 ...
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Noise in measurement
I'm having a problem when I measure a voltage from a lead battery. I provide my circuit so you can understand better whats happening.
For example I measure a 24 V battery, goes to a resistor divider ...
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DC-link capacitor selection for electric vehicle
I'm currently trying to build a model of a three-phase inverter to be used in electric vehicles. The selection of a film DC-link capacitor is mainly dependent on the allowed voltage ripple, which is ...
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LTSpice voltage source understanding
I came across this Short Video on Youtube by MicroType Engineering, link here.
His simulation on LTSpice was the below:
I tried the simulation on LTSpice myself. However I am curious as to what the ...
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Acceptable overshoot, accuracy, and control bandwidth of a buck converter
I am designing a closed loop buck converter and was wondering what would be the acceptable values/performance for control parameters like accuracy, control bandwidth, and overshoot.
I know that the ...
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Buck Converter Voltage Ripple at Output
I just made a 32V to 16V 2 Amps buck converter with a 10mH inductor, I'm having an issue with the voltage ripple output. Too many spikes, and it's generally not consistent. Electrolytic and Film ...
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How does the RMS voltage capture the time varying part in the conversion ratio of the half wave rectifier?
I am studying conversion ratio of a halfwave rectifier from here.
It says that
Conversion ratio (also called "rectification ratio", and confusingly, "efficiency") η is defined as ...
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Am I calculating/considering linear regulator voltage ripple correctly?
I need a clean and power efficient -1.22V supply for a ADC driver fully-differential op-amp, the main power source will be a Lipo battery cell.
I'm considering ADM8828 followed by a LT1964. The LT1964 ...
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LMP91000 noise issue when using MCP4725 as Vref
I am using the analog front end LMP91000 IC to make a potentiostat circuit. The build-in step resolution of the LMP is not enough for my sensor measurement purpose. I found people having this same ...
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I2C bus pollutes power rail
Working on a new revision of a design with a new I2C LED driver connected to
SAM S70 Cortex-M7, I noticed some high speed ripple on 5V rail when using a 1Ghz scope.
The PCB has 2 I2C buses and both ...
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Designing a pi filter (C-L-C) for the output of a TPS62740 buck converter
We are using a TPS62740 IC as DC-DC converter.
We are getting ripple at the output in the range of 10 mV to 12 mV, so we are thinking to add a pi (C-L-L) filter at the output of the DC-DC converter.
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Designing a small footprint DC/DC converter
This is my first time diving into DC/DC converters, so I'm learning a lot of new information and am aware that I may miss some important details. I'm hoping that others with more experience could ...
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