SLUA963B June 2020 – October 2022 UCC21710-Q1 , UCC21732-Q1 , UCC5870-Q1
UCC217xx-Q1's integrated isolated analog-to-PWM channel can be used to monitor any voltage within the range of the AIN to COM pin including the dc bus voltage and phase current. The AIN pin also integrates a current source to bias a temperature sensor, which can be used in conjunction with the internal temperature sensor of the power switch module. Figure 3-12 shows the internal circuit and external connection for monitoring the IGBT module temperature. Temperature is important to determine the module's health and lifetime and monitor for misoperation.