Do not use an electrolytic capacitor!Since the class-D switches at a frequency as high as 270kHz then ceramic capacitors are used for all the high frequency decoupling and bootstrap capacitors. 220uF electrolytic capacitors are parallel to the 1uF ceramic capacitors for decoupling at low frequencies. Harvy Wallbanger and DickCappels
People also ask
What is the difference between ceramic and electrolytic capacitors?
Ceramic capacitors have lower ESR and due to this they offer lower leak currents than the electrolytic capacitors. tip: Try to use ceramic capacitors to your battery-powered designs. Lowe ESR also means that ceramic capacitors have better transients response so they can provide current (more easily) during a transient.
What are the dirty tricks we used in capacitors?
Electrolytic capacitors and high capacitance (0.1F to 100F+) ceramic capacitors are the dirty tricks we used. 2. Electrolytic capacitors
Can electrolytic capacitors withstand high voltage?
Even though electrolytic capacitors have a high capacity, they cannot withstand high voltage amounts. Not only that, but the capacity is not so stable either. That means the lifespan of electrolytic capacitors is not very long. It is best to use electrolytic capacitors in low-frequency circuits and low-voltage circuits.
Do higher rated ceramic capacitors reduce capacitance falloff?
Anyway, buying higher rated ceramics will do nothing to combat this voltage related capacitance falloff, the only factor that ultimately plays a role is the physical volume of the dielectric. More material means more dipoles. So physically larger capacitors will retain more of their capacitance under voltage.