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

Chien Hung Tsai, Chi Yuan Huang, Jhih Sian Guo, Chen Yu Wang

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)571-591
Number of pages21
JournalInternational Journal of Circuit Theory and Applications
Volume45
Issue number4
DOIs
Publication statusPublished - 2017 Apr 1

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Applied Mathematics

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