標題: A Class-D Amplifier Powered by Embedded Single-Inductor Bipolar-Output Power Module with Low Common Noise and Dynamic Voltage Boosting Technique
作者: Chen, Shin-Hao
Lin, Kuei-Liang
Ng, Shao Siang
Chen, Ke-Horng
Wey, Chin-Long
Kang, Sheng
Cheng, Kevin
Huang, Li-Ren
Huang, Chao-Jen
Luo, Hsin-Yu
電子工程學系及電子研究所
Department of Electronics Engineering and Institute of Electronics
關鍵字: Class-D audio amplifier;single-inductor bipolar output converter;dynamic voltage boosting;SoC system
公開日期: 1-Jan-2014
摘要: This paper proposes a high efficiency Class-D amplifier (CDA) with embedded single-inductor bipolar output (SIBO) power module. The characteristics of SIBO converter\'s bipolar outputs not only suppress equivalent common mode noise but also remove several large external bulky components in conventional boost supply CDA systems. Since bipolar outputs in the SIBO provide independent driving capability, CDA is capable of operating in both single-ended (SE) and bridge-tide load (BTL) configurations. Furthermore, the proposed dynamic voltage boosting (DVB) technique adjusts the SIBO output voltage level according to the CDA\'s output level with 5% power efficiency improvement. Peak total harmonic distortion plus noise (THD+N) performance is 0.012%. Peak power efficiency of SIBO and CDA are 89% and 93.2%, respectively.
URI: http://hdl.handle.net/11536/125015
ISBN: 978-1-4799-5696-8
ISSN: 1930-8833
期刊: PROCEEDINGS OF THE 40TH EUROPEAN SOLID-STATE CIRCUIT CONFERENCE (ESSCIRC 2014)
起始頁: 315
結束頁: 318
Appears in Collections:Conferences Paper