论文信息 - A new transformer-based startup scheme with novel voltage monitors for energy harvesting

A new transformer-based startup scheme with novel voltage monitors for energy harvesting

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.

[1] G. Cho,et al. A 40 mV Transformer-Reuse Self-Startup Boost Converter With MPPT Control for Thermoelectric Energy Harvesting , 2012, IEEE Journal of Solid-State Circuits.

[2] Anantha Chandrakasan,et al. A Battery-Less Thermoelectric Energy Harvesting Interface Circuit With 35 mV Startup Voltage , 2010, IEEE Journal of Solid-State Circuits.

[3] Koichi Ishida,et al. Startup Techniques for 95 mV Step-Up Converter by Capacitor Pass-On Scheme and ${\rm V}_{\rm TH}$-Tuned Oscillator With Fixed Charge Programming , 2012, IEEE Journal of Solid-State Circuits.