Title: Single Inductor Quad Output Switching Converter with Priority-Scheduled Program for Fast Transient and Unlimited-load Range in 40nm CMOS Technology
Authors: Chen, Wei-Chung
Huang, Tzu-Chi
Tsai, Tsu-Wei
Peng, Ruei-Hong
Lin, Kuei-Liang
Chen, Ke-Horng
Lin, Ying-Hsi
Tsai, Tsung-Yen
Huang, Chen-Chih
Lee, Chao-Cheng
Huang, Li-Ren
Huang, Chao-Jen
Hung, Chung-Chih
Wey, Chin-Long
Luo, Hsin-Yu
National Chiao Tung University
Keywords: Single inductor quad output (SIQO);cross-regulation;priority scheduled program (PSP);level bypass detector (LBD);fast transient
Issue Date: 1-Jan-2014
Abstract: System-on-a-chip (SoC) applications need multiple power supplies with low noise for analog circuits and high efficiency for digital circuits. Thus, this paper proposes the priority-scheduled program (PSP) for single inductor quad output (SIQO) switching converter to manage energy delivery for four outputs. Consequently, SIQO converter with PSP can provides fast transient response and reduce cross-regulation. Besides, the level bypass detector (LBD) provides unlimited load range between each output through the shared inductor. The PSP cooperates with the LDB to transfer energy to low priority outputs to avoid overshoot at high priority outputs. With the two low-dropout regulator (LDR) working as buffers at low priority outputs, voltage disturbance can be filtered out. The SIQO converter fabricated in 40nm CMOS technology satisfies power requirements in portable electronics with 0.2% low noise, 15 mu s fast transient response, and cross-regulation smaller than 30mV.
URI: http://hdl.handle.net/11536/125014
ISBN: 978-1-4799-5696-8
ISSN: 1930-8833
Begin Page: 167
End Page: 170
Appears in Collections:Conferences Paper