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http://dx.doi.org/10.7471/ikeee.2016.20.4.432

Charge Copy Method for Reduction of Cross Regulation in SIDO Boost Converter  

Hwang, Wonjune (Dept. of Electrical and Electronics Engineering, Chung-Ang University)
Kim, Ju Eon (Dept. of Electrical and Electronics Engineering, Chung-Ang University)
Baek, Kwang-Hyun (Dept. of Electrical and Electronics Engineering, Chung-Ang University)
Publication Information
Journal of IKEEE / v.20, no.4, 2016 , pp. 432-434 More about this Journal
Abstract
In conventional SIDO(Single Inductor Dual Output) boost converter, charging time is changed by load power consumption. In this case, if the power consumption of one load is changed to such a degree that switching frequency of the boost converter must be changed, another load charge time is also changed, which this causes cross regulation. In this paper, the charge copy technique is proposed to reduce cross regulation. When the switching frequency is changed to an integer ratio, another load charge time is also changed to integer ratio. Simulation result shows that proposed method reduces the 10.24mV cross regulation and 39.118us recover-time compared with conventional method.
Keywords
Boost converter; SIDO; Cross regulation; Charge copy; Switching frequency;
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  • Reference
1 Xiaochen Jing, Philip K. T. Mok, M.C.Lee "Awide-Load-Range Constant-Charge Auto Hopping Control single-Inductor-Dual-Output Boost Regulator With Minimized Cross-Regulation," IEEE J. Solid-State Circuits, vol.46, no.10, pp.2350-2362,Oct.2011.   DOI