150nA IQ, Quad Input - Quad Output, Intelligent Integrated Power Management for IoT Applications

Power management systems for wireless sensor nodes in industrial IoT applications need to operate seamlessly from multiple energy sources and efficiently manage power delivery to multiple load circuits. This paper presents a single chip integrated power management solution with an autonomous 4:1 power multiplexer, single-input multiple-output DC-DC converter and output load current metering. Designed in 130nm CMOS process, the proposed design consumes a total quiescent current of <; 150 nA with an operating input/output voltage range of 1.6V to 5.0V and a total maximum load current of 50 mA.