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What is the ESR rating?

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Eno

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I see this rating on components, what is it?
 

flatulent

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Re: What is ESR?

It is the series resistance. Specifically, they lump all loss mechanisms into a ficticous resistor in series with the components that will have the same loss as the total from all sources of loss.
 

halls

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Re: What is ESR?

ESR stands for equivalent series resistance, and is used when trying to modelize some real element.

For example if you want to add a coil to a circuit, you coud modelize it as an ESR and an ideal inductance, because the real coil will have ohmic losses (represented by the ESR)
 

barry14

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Re: What is ESR?

ESR stands for Equivalent Series Resistance. It is an important parameter for large capacitors used to smooth rectified AC into DC in power supplies. This is because it is a measure of how much internal heating will occur as the capacitor conducts ripple current (usually at 60 or 120 Hz). It is this heating that determines how much current the capacitor can handle.
 

rajaselvamj

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Re: What is ESR?

Equivalent series resistance is an effective resistance that is used to describe the resistive parts of the impedance
 

muralicrl

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Re: What is ESR?

hi,

Kindly see the attachment on ESR.
In case you need more detail, don't hesitate to contact me.

regards,

N.Muralidhara
MSRS, CRL-BEL
 

smith123

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What is ESR?

Equivalent series resistance
 

quaternion

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Re: What is ESR?

How one could depend on esr to compensate LDO ,as it has strong function in frequency?? it has a small value at the frequency where its zero is placed ??

Should one deal with it as a range of values??
 

distort10n

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Re: What is ESR?

quaternion said:
How one could depend on esr to compensate LDO ,as it has strong function in frequency?? it has a small value at the frequency where its zero is placed ??

Should one deal with it as a range of values??

Hello Quaternion,

Texas Instruments has an application note titled "ESR, Stability, and the LDO Regulator."

It discusses the tradeoff concerning ESR and stability with ripple current.
 

quaternion

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Re: What is ESR?

yes ,I know these.
But I am talking about the issue in page 3 in the stated application note.

Is it mean that we should design according to the flat value esr , but can't this leads to more spikes due to the increase in the esr value at lower frequencies , or its typical variation is small ?
 

markopoon

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What is ESR?

This post is very help. especially the AVX note. Thanks.
 

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