Q.Ripple current of MLCC (2): Why do MLCCs (Multilayer Ceramic Chip Capacitors) generate heat with the ripple current?
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A.
An ideal capacitor does not self-heat with the charge and discharge current (ripple current) that enters and leaves. However, actual multi-layer ceramic capacitors (MLCCs) have very low equivalent series resistance (ESR) and therefore will experience a small loss. This loss generates a small amount of heat, sometimes called Joule heating.
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Q. Ripple current of MLCC (1): What is the allowable ripple current of capacitors?
Q. Ripple current of MLCC (4): How is the allowable ripple current measured?
Q. Ripple current of MLCC (7): Does case size affect the allowable ripple current?
Q. ESR characteristics (2): What are the physical components of ESR?
Q. ESR characteristics (5): What affect does temperature have on ESR?