## Abstract

This paper proposes a fully integrated dual-output continuously scalable-conversion-ratio (CSCR) switched-capacitor (SC) converter that increases the overall power conversion efficiency (PCE) beyond that of the conventional dual-output SC converters. The structure employs proposed dual-output CSCR SC stage and channel SC stage to transfer charges to two output load voltages (<inline-formula> <tex-math notation="LaTeX">$V_{\mathrm{OUT}}$</tex-math> </inline-formula>s) with high PCE. Also, the converter is controlled by analog switching frequency modulation (ASFM) and digital flying capacitance modulation (DFCM) loops to regulate both <inline-formula> <tex-math notation="LaTeX">$V_{\mathrm{OUT}}$</tex-math> </inline-formula>s simultaneously. The proposed converter is fabricated using a 180 nm CMOS process, and regulates <inline-formula> <tex-math notation="LaTeX">$V_{\mathrm{OUT}}$</tex-math> </inline-formula> of 1.1–1.6 V and 0.55–0.95 V with an input voltage of 1.5–1.9 V. In measurement, the proposed converter achieves a maximum PCE of 85%, and an average PCE of 78.6% for the available <inline-formula> <tex-math notation="LaTeX">$V_{\mathrm{OUT}}$</tex-math> </inline-formula> ranges. Moreover, the converter exhibits the maximum <inline-formula> <tex-math notation="LaTeX">$I_{\mathrm{OUT}}$</tex-math> </inline-formula>s of 21 mA and 4 mA, respectively.

Original language | English |
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Pages (from-to) | 1-13 |

Number of pages | 13 |

Journal | IEEE Transactions on Circuits and Systems I: Regular Papers |

DOIs | |

Publication status | Accepted/In press - 2024 |

### Bibliographical note

Publisher Copyright:IEEE

## Keywords

- Capacitors
- Computer architecture
- Continuously scalable-conversion-ratio
- dc–dc converter
- dual-output switched capacitor converter
- Hardware
- Internet of Things
- Internet of Things (IoT)
- system on chip (SoC) design
- Topology
- Video recording
- Voltage control

## ASJC Scopus subject areas

- Hardware and Architecture
- Electrical and Electronic Engineering