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1 vote

Bode plot of a boost converter on LTspice

When people start looking into the simulation of switching converters, they often mix ac and transient analyses. a transient analysis uses a cycle-by-cycle model whose internals mimic what the real ...
Verbal Kint's user avatar
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0 votes

Joule thief modelling

The Joule thief circuit is a standard Boost converter with a sense winding using a coupled inductor and can be modeled first as a simple Boost converter. You can use an LTspice simulation of an ...
MicroservicesOnDDD's user avatar
0 votes
Accepted

Power Converter Average Modelling

Question: "When we say average model, should it not predict the any cycle variation or transient behavior?" My simple answer: Transient behavior of a voltage regulator can be seen by ...
Reynaldo Gonzalez's user avatar
0 votes

Power Converter Average Modelling

The simplest argument is thus: When the system is linear with respect to switching frequency and harmonics, those harmonics don't affect the cycle-averaged / DC response. That is, it obeys ...
Tim Williams's user avatar
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5 votes

Lots of electrical noise at boost converter output

If you look carefully at the Webench schematic, you'll see that you've ignored the specifications that were purposefully red-colored as being important :) You also should show a photo of how exactly ...
Kuba hasn't forgotten Monica's user avatar
13 votes

Lots of electrical noise at boost converter output

It's the output cap. According the the datasheet, C11 has maximum ripple current of 230mA RMS and 0.44 ohms impedance at 100kHz, some of this impedance is capacitive but the rest is 30-40 mOhms ESR. ...
bobflux's user avatar
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20 votes

Lots of electrical noise at boost converter output

The diode is innocent. What you're seeing there is the effect of the output bulk capacitor's ESR (C11). According to the Digi-Key page you linked, its ESR is 0.44 Ohms. Given the waveform of the 1A ...
Jonathan S.'s user avatar
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1 vote
Accepted

LM27313 boost converter failure

There is nothing obviously wrong with the schematic or the layout. Failure without overheating points towards excessive voltage or current on some semiconductor or capacitor. Because replacing the ...
jpa's user avatar
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2 votes

LM27313 boost converter failure

Power Inductor at 1.6MHz is challenge. D1 has to conduct after switch off as soon as possible, otherwise a huge voltage spike at SW pin is developed. The inductor leakage makes it worst. Check if D1 ...
Michal Podmanický's user avatar
1 vote

LM27313 boost converter failure

Have you set the output voltage correctly? You need to measure V_FB first in order to properly adjust the V_OUT. Disconnect the load and check whether your circuit could work in open load (before and ...
Keyan's user avatar
  • 51
1 vote

Boost converter 12V to 20V

You'll find DC-DC converters using PWM controllers with external MOSFETs and inductors in just about every electronic product you have around you, so I would not rule them out if I were you. If you ...
winny's user avatar
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2 votes

Buck and boost converter in series

A possible easier solution to this problem: Use a buck-boost converter (e.g. TPS63020) to get a clean 5V output and use a AMS1117-3.3V LDO for the esp as it draws a negligable ammount of power.
kwtf's user avatar
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