Class d amplification circuit

A class D amplification circuit comprising:

• a PWM circuit;
• a first drive circuit connected to the PWM circuit;
• a second drive circuit connected to the PWM circuit;
• and
• a differential-signal filter circuit connected to the first drive circuit and the second drive circuit;
• wherein
• the differential-signal filter circuit includes a first inductor, a second inductor, a first capacitor, and a second capacitor;
• the first capacitor and the second capacitor each include a dielectric body and electrodes with the dielectric body therebetween;
• the differential-signal filter circuit includes a first input terminal, a second input terminal, a first output terminal, a second output terminal, and a reference potential terminal;
• the first input terminal is connected to the first drive circuit;
• the second input terminal is connected to the second drive circuit;
• the reference potential terminal is connected to a reference potential;
• the first output terminal and the second output terminal are connected to a load circuit;
• one external electrode of the first capacitor is connected to the first output terminal;
• one external electrode of the second capacitor is connected to the second output terminal;
• another external electrode of the first capacitor and another external electrode of the second capacitor are connected to the reference potential terminal;
• one external electrode of the first inductor is connected to the first input terminal;
• another external electrode of the first inductor is connected to the first drive circuit;
• one external electrode of the second inductor is connected to the second input terminal;
• and
• another external electrode of the second inductor is connected to the second drive circuit.