Title :
A new transformer-based startup scheme with novel voltage monitors for energy harvesting
Author :
Haozhou Zhang ; Menglian Zhao ; Sheng Liu ; Xiaobo Wu
Author_Institution :
Inst. of VLSI design, Zhejiang Univ., Hangzhou, China
Abstract :
A new transformer-based startup scheme with novel voltage monitors developed in UMC 0.18μm CMOS process is presented in this paper. The startup process is divided into two modes: oscillation and constant duty cycle flyback, which greatly reduces startup time and only needs a small depletion-mode power transistor. Also a novel voltage monitor here can generate switch point voltage with very small temperature coefficient. Simulation results show that the startup time are 0.1s (VIN=300mV) and 3s (VIN=50mV). The switch point voltage is 1.1V with temperature coefficient of only 0.33mV/°C.
Keywords :
CMOS integrated circuits; energy harvesting; power transformers; power transistors; UMC CMOS process; constant duty cycle flyback; energy harvesting; oscillation flyback; size 0.18 mum; small depletion-mode power transistor; small temperature coefficient; switch point voltage monitoring; time 0.1 s; time 3 s; transformer-based startup scheme; voltage 1.1 V; voltage 300 mV; voltage 50 mV; Educational institutions; MOSFET; flyback converter; self-startup scheme; transformer-based; voltage monitor;
Conference_Titel :
Electron Devices and Solid-State Circuits (EDSSC), 2014 IEEE International Conference on
DOI :
10.1109/EDSSC.2014.7061155
