National Taiwan University NTU
National Taiwan University
My name is Cheng-Yang Hong, I was born in Hualien, Taiwan, in 1995. I received the B.S. degree in electrical engineering from National Taiwan University of Science and Technology, Taipei in 2018. Iâ€™m currently pursuing the M.S. degree from Institute of Electrical Engineering, National Taiwan University, Taipei, Taiwan. My research interests include power management and analog integrated circuits design.
My presentation will introduce the proposed multiphase gm-ramped phase-interleaving technique, sample and hold based current sensing and adaptive-extended TON control. Without any user predefined load transient threshold voltage, the proposed technique can automatically turn on two phases immediately to reduce the output voltage drop during the load-transient. The circuit component mismatch may cause the phase current imbalance. Hence, the sample and hold based high-speed average current sensing is adopted to achieve current-balancing. Last, an adaptive-extended TON control (AETC) mechanism is adopted to overcome the steady state switching frequency variations. Full transistor level post-simulation results show that, during 2.5 A load current step changes with 1A/1ns slew rate, the converter is able to regulate the output voltage from within 0.4 us with less than 50 mV undershoot. A CMOS dual phase buck converter is realized in a 0.18 Âµm process to verify these techniques. Also, the measurement results are in progress.
Tuesday, March 17, 2020
11:00 AM – 11:20 AM