3.8 A 23.6ppm/°C Monolithically Integrated GaN Reference Voltage Design with Temperature Range from −50°C to 200°C and Supply Voltage Range from 3.9 to 24V

The demand for automotive electronics is increasing in autonomous-driving electric vehicles. Automotive electronics use high-power-density DC-DC converters that are required to withstand extreme operating temperatures up to 200°C. As depicted in the top left of Fig. 3.8.1, conventional bandgap and CMOS reference-voltage circuits have a lower operating temperature [1]-[8]. Although power consumption can be effectively reduced from 2.6nW [2] to 192pW [8], the reference-voltage circuits are not suitable for high-power-density applications due to the limited temperature range.