How does inductance value affect output voltage ripple?

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Discussion Overview

The discussion centers on the relationship between inductance value and output voltage ripple in electrical circuits, particularly in the context of continuous mode operation. Participants explore the effects of inductance on ripple characteristics and seek clarification on related concepts.

Discussion Character

  • Technical explanation, Conceptual clarification

Main Points Raised

  • One participant states that a higher inductance results in a smaller output voltage ripple.
  • Another participant requests an explanation for the observed relationship between inductance and ripple.
  • A participant provides a formula related to continuous mode operation, suggesting that the change in output current is influenced by the input and output voltages and the inductance value.
  • There is a mention of inductivity being "inert" to changes in current, prompting further clarification from others.
  • One participant references the relationship between voltage, inductance, and the rate of change of current.

Areas of Agreement / Disagreement

Participants express differing levels of understanding regarding the concepts discussed, particularly the term "inert." There is no consensus on the explanation of how inductance affects ripple beyond the initial claim.

Contextual Notes

Some assumptions about the operational conditions and definitions of terms like "inert" remain unclear, and the mathematical relationships presented may depend on specific circuit configurations.

Who May Find This Useful

Individuals interested in electrical engineering, particularly those studying power electronics and circuit design, may find this discussion relevant.

Kasim
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Hi

What effect does the inductance value have on the ripple in the output voltage?
 
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Higher the inductance, smaller the ripple
 
Thanks

Can you explain what the reason is for this?
 
In continuous mode ΔIout=(Vin-Vout)⋅Ton/L
Waveforms for continuous mode:
smps-buck-switching-regulator-concept-05.gif


Generally speaking, inductivity is inert to change of current flowing through it.
 
Thanks, but what do you mean by inert?
 
Kasim said:
Thanks, but what do you mean by inert?
V=-L⋅di/dt
 
Thanks a lot
 

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