Prevention of Voltage Instabilities due to Peak Current Consumption by Active Compensator

摘要

Due to the increase in current consumption caused by higher integration of high performance and diverse functioning chips in mobile phones, it has become more important to design a stable global power distribution network. When the operation of high-power functions overlap and there is excess peak current consumption, a sudden voltage dip occurs from the battery to the power management unit. In this paper, we propose an active compensator method to prevent voltage dip below the under-voltage lockout (UVLO) threshold voltage in the mobile phone power distribution network. To design the active compensator circuit, a simulation model for the power delivery network is developed based on the load current profile, power delivery network PCB layout, and Lithium-Ion battery model.