Ultra-Low Idle Power Class-D Amplifier
Miao Zhang (TU Delft - Electrical Engineering, Mathematics and Computer Science)
Qinwen Fan – Mentor (TU Delft - Electrical Engineering, Mathematics and Computer Science)
Kofi Makinwa – Graduation committee member (TU Delft - Electrical Engineering, Mathematics and Computer Science)
Fabio Sebastiano – Graduation committee member (TU Delft - (OLD)Applied Quantum Architectures)
Marco Berkhout – Graduation committee member (NXP Semiconductors)
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Abstract
Class-D amplifiers are widely used in automotive audio systems because of their high efficiency. In modern car sound systems, multiple amplifiers are used to provide good audio effect. However, typical class-D amplifiers have a high idle-power, which can drain the battery quickly. To solve this problem, an ultra-low idle power class-D amplifier is proposed in this thesis. The simulation results show that this amplifier can achieve very low idle power while maintaining competitive linearity and efficiency.