Speaker: Ms. Hong Gao, Fujitsu Laboratories Ltd., Kawasaki, Japan
A boost converter that has a wide input-voltage range is presented. The wide range is achieved by an oscillator that can start operations at ultra-low input voltages. Moreover, it uses an amplitude regulation circuit to avoid overvoltage problems and implements a power-down circuit to eliminate the unnecessary power consumption. Experimental results showed that the proposed circuit enabled an input range from 60 mV to 3 V and achieved high power efficiencies. To the best of our knowledge, this is the first time that a boost converter supporting a wide input range from sub-100 mV to several volts has been achieved.
Hong Gao received the B.S. degree from China University of Petroleum, Beijing, China, in 2009, and the M.S. degree from Gunma University, Kiryu, Japan, in 2012. In 2012, she joined Fujitsu Laboratories Limited, Kawasaki, Japan, where she has engaged in research on power integrated circuits. Her current research interests include the applications of power management circuits in wireless sensor networks.