標題: Embedded Single-Inductor Bipolar-Output DC-DC Converter in Class-D Amplifier for Low Common Noise
作者: Chen, Shin-Hao
Lin, Kuei-Liang
Ng, Shao Siang
Huang, Tzu-Chi
Chen, Ke-Horng
Lin, Ying-Hsi
Tsai, Tsung-Yen
Lee, Chao-Cheng
電控工程研究所
Institute of Electrical and Control Engineering
關鍵字: Class-D audio amplifier;dynamic voltage boosting (DVB);single-inductor bipolar-output (SIBO) converter;SoC application
公開日期: 1-Apr-2016
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 and bridge-tide load configurations. Furthermore, the proposed dynamic voltage boosting 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 performance is 0.012%. Peak power efficiency of SIBO and CDA is 89% and 93.2%, respectively.
URI: http://dx.doi.org/10.1109/TPEL.2015.2446510
http://hdl.handle.net/11536/129321
ISSN: 0885-8993
DOI: 10.1109/TPEL.2015.2446510
期刊: IEEE TRANSACTIONS ON POWER ELECTRONICS
Volume: 31
起始頁: 3106
結束頁: 3117
Appears in Collections:Articles