標題: Single-Inductor Quad-Output Switching Converter With Priority-Scheduled Program for Fast Transient Response and Unlimited Load Range in 40 nm CMOS Technology
作者: Chen, Wei-Chung
Su, Yi-Ping
Huang, Tzu-Chi
Tsai, Tsu-Wei
Peng, Ruei-Hong
Lin, Kuei-Liang
Chen, Ke-Horng
Lin, Ying-Hsi
Lee, Chao-Cheng
Lin, Shian-Ru
Tsai, Tsung-Yen
電控工程研究所
Institute of Electrical and Control Engineering
關鍵字: Cross-regulation;fast transient;level bypass detector (LBD);priority-scheduled program (PSP);single-inductor quad-output (SIQO)
公開日期: 1-Jul-2015
摘要: System-on-a-chip (SoC) applications require multiple power supply voltages with the features of low noise for analog circuits and high efficiency for digital circuits. Thus, this paper proposes the priority-scheduled program (PSP) for the single-inductor quad-output (SIQO) switching converter. This technique manages energy delivery to multiple outputs, facilitates fast transient response, and reduces cross-regulation simultaneously. Moreover, a level bypass detector (LBD) is used to overcome the limitation of significant loading differences among quad outputs in conventional designs because the PSP technique cantransfer additional energy to low-priority outputs to avoid overshoot voltage at high-priority outputs. Furthermore, voltage disturbance can be filtered out using two additional low-dropout regulators that operate as buffers cascaded at two low-priority outputs. Therefore, the SIQO converter that is fabricated in 40 nm CMOS technology satisfies the power requirements in portable electronics given its low cross-regulation of 0.2%, fast transient response of 15 mu s, and an output voltage ripple that is smaller than 30 mV.
URI: http://dx.doi.org/10.1109/JSSC.2015.2422071
http://hdl.handle.net/11536/127872
ISSN: 0018-9200
DOI: 10.1109/JSSC.2015.2422071
期刊: IEEE JOURNAL OF SOLID-STATE CIRCUITS
Volume: 50
起始頁: 1525
結束頁: 1539
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