A High-Efficiency 4x45W Car Audio Power Amplifier using Load Current Sharing


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Mensink, C. and Tuijl, E. van and Gierkink, S. and Mostert, F. and Zee, R. van der (2010) A High-Efficiency 4x45W Car Audio Power Amplifier using Load Current Sharing. In: IEEE Symposium on VLSI Circuits, VLSIC 2010, 15-18 June 2010, Honolulu, HI, USA (pp. pp. 61-62).

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Abstract:A 4x45W (EIAJ) monolithic car audio power amplifier is presented that achieves a power dissipation decrease of nearly 2x over standard class AB operation by sharing load currents between loudspeakers. Output signals are conditioned using a common-mode control loop to allow switch placement between loads with minimal THD increase. A prototype is realized in a SOI bipolar-CMOS-DMOS process with 0.5μm feature size. Die area is 7.5x4.6mm2. THD+N @(1kHz,10W) is 0.05%.
Item Type:Conference or Workshop Item
Copyright:© 2010 IEEE
Faculty:
Electrical Engineering, Mathematics and Computer Science (EEMCS)
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Link to this item:http://purl.utwente.nl/publications/75101
Official URL:http://dx.doi.org/10.1109/VLSIC.2010.5560274
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