How does inductance value affect output voltage ripple?

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Inductance value significantly impacts output voltage ripple, with higher inductance resulting in smaller ripple. This is due to the relationship between inductance, input voltage, output voltage, and the time the voltage is applied, as described by the formula ΔIout=(Vin-Vout)⋅Ton/L. Inductors resist changes in current, which helps stabilize the output voltage. The discussion also touches on the concept of inductors being "inert" to current changes, indicating their role in smoothing voltage fluctuations. Understanding these principles is crucial for optimizing circuit performance.
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 alot
 
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