SLVSG43A December 2023 – November 2024 TPSI3100-Q1
PRODUCTION DATA
Refer to the PDF data sheet for device specific package drawings
There are several sources of error that contribute to total error in the overcurrent detection accuracy. These include:
For this design, an overcurrent protection accuracy of ±10% is required. The voltage reference tolerance of the TPSI3100-Q1 can be found in the Electrical Characteristics section of the data sheet and includes the comparator offset error.
The resistor tolerances of the resistor divider are chosen as 1%. The reference voltage tolerance is ±1.5%. Lastly, the selected shunt resistor tolerance is ±1%.
It is assumed that all error contributors are independent variables, so that the total expected error adds in a root mean squared fashion as follows: