500 °C Bipolar SiC Linear Voltage Regulator

Abstract

In this paper, we demonstrate a fully integrated linear voltage regulator in silicon carbide NPN bipolar transistor technology, operational from 25°C up to 500°C. For 15-mA load current, this regulator provides a stable output voltage with <;2% variation in the temperature range 25°C-500°C. For both line and load regulations, degradation of 50% from 25°C to 300°C and improvement of 50% from 300°C to 500°C are observed. The transient response measurements of the regulator show robust behavior in the temperature range 25°C-500°C.