International Journal of Circuit Theory and Applications

Volume 45, Issue 4 pp. 571-591

Research Article

Quasi-V² hysteretic control boost DC–DC regulator with synthetic current ripple technique

Chien-Hung Tsai,

Chien-Hung Tsai

Department of Electrical Engineering, National Cheng Kung University, Tainan, Taiwan

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Chi-Yuan Huang,

Corresponding Author

Chi-Yuan Huang

[email protected]

Department of Electrical Engineering, National Cheng Kung University, Tainan, Taiwan

Correspondence to: Chi-Yuan Huang, Department of Electrical Engineering, National Cheng Kung University, Tainan, Taiwan. E-mail [email protected]Search for more papers by this author

Jhih-Sian Guo,

Jhih-Sian Guo

Department of Electrical Engineering, National Cheng Kung University, Tainan, Taiwan

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Chen-Yu Wang,

Chen-Yu Wang

Department of Electrical Engineering, National Cheng Kung University, Tainan, Taiwan

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Chien-Hung Tsai,

Chien-Hung Tsai

Department of Electrical Engineering, National Cheng Kung University, Tainan, Taiwan

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Chi-Yuan Huang,

Corresponding Author

Chi-Yuan Huang

[email protected]

Department of Electrical Engineering, National Cheng Kung University, Tainan, Taiwan

Correspondence to: Chi-Yuan Huang, Department of Electrical Engineering, National Cheng Kung University, Tainan, Taiwan. E-mail [email protected]Search for more papers by this author

Jhih-Sian Guo,

Jhih-Sian Guo

Department of Electrical Engineering, National Cheng Kung University, Tainan, Taiwan

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Chen-Yu Wang,

Chen-Yu Wang

Department of Electrical Engineering, National Cheng Kung University, Tainan, Taiwan

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First published: 17 July 2016

https://doi.org/10.1002/cta.2242

Citations: 1

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Summary

Conventionally, a high accuracy operational amplifier (OPA)-based current sensor is used for sensing current message under a full load range, which increases the cost characteristic. Instead of a high accuracy OPA-based current sensor, this paper describes using a switching inductor quasi-V² hysteretic control boost dc–dc regulator with a proposed current-sensing technique named emulated-ramp feedback (ERF), which can improve transfer efficiency under a full load range. Two control systems are presented in this paper. The first system, a hysteretic voltage control switching boost converter with ERF, achieves the hysteretic voltage control in a boost regulator and lowers the cost characteristic without using compensator. The second system, a quasi-V² hysteretic voltage control switching boost converter with ERF, demonstrates the compatibility of ERF technique in rippled-based control boost converters. The regulator was implemented with TSMC 0.25-µm HV CMOS process. Experimental results show the second system can work under the specification of 5–12 V with a 0 to 300-mA load range. Additionally, this system attained a recovery time is 27/95 µs for step-up/step-down in a 100 to 300-mA continuous conduction mode load current, and a peak efficiency of 92.1% with a chip area of only 1.014 mm². Copyright © 2016 John Wiley & Sons, Ltd.

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Volume45, Issue4

April 2017

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Quasi-V² hysteretic control boost DC–DC regulator with synthetic current ripple technique

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Quasi-V² hysteretic control boost DC–DC regulator with synthetic current ripple technique