"CMO design of a low voltage AC-DC switched-mode power supply for energ" by Malcolm Leeland P. Kwok

CMO design of a low voltage AC-DC switched-mode power supply for energy harvesting applications

Date of Publication

8-2018

Document Type

Master's Thesis

Degree Name

Master of Science in Electronics and Communications Engineering

Subject Categories

Electrical and Computer Engineering

College

Gokongwei College of Engineering

Department/Unit

Electronics and Communications Engineering

Thesis Adviser

Roderick Y. Yap

Defense Panel Chair

Alexander C. Abad

Defense Panel Member

Ann E. Dulay
Donabel D. Abuan

Abstract/Summary

The Internet of Things (IoT) is an emerging technology that will greatly change our lifestyle in the years to come. However, the increasing number of devices connected to a network or the Internet will surely necessitate a power source. With the relatively slow progression of the battery technology, alternative power sources with appropriate power management will allow perpetual and green use of the IoT devices. In the recent years, AC power harvesting from piezoelectrics and vibrational microgenerators were researched and were found to generate usable ambient energy for the consumption of low power devices. The objective of this research is to simulate the conversion and regulation of the small AC power through the design of a low voltage AC-DC Switched-Mode Power Supply (SMPS) using 0.35um CMOS technology. Using a low voltage design and digital pulse frequency modulation (DPFM) control for the SMPS, operation with AC input as low as 1.3 Vpk with a regulated output of 3 V and 1 mA load is achieved. Key elements in the AC-DC SMPS are the CMOS rectifier, formed by a negative voltage converter (NVC) and an active diode, and the programmable delay cell based DPFM booster circuit operating up to 40 kHz. The chip achieves a maximum of 87% efficiency. The chip performance is evaluated across the five corner libraries of the standard 0.35um CMOS.

Abstract Format

html

Note

Both Bachelor and Masters thesis

Language

English

Format

Electronic

Accession Number

CDTG007512

Shelf Location

Archives, The Learning Common's, 12F Henry Sy Sr. Hall

Physical Description

1 computer optical disc; 4 3/4 in.

Keywords

Analog CMOS integrated circuits; Metal oxide semiconductors, Complementary

Upload Full Text

wf_no

Embargo Period

11-21-2024

This document is currently not available here.

Share

COinS