SLIS178B October 2017 – January 2018 TPS92830-Q1
The TPS92830-Q1 device has an integrated output-current derating function. Voltage across the sensing resistors is reduced if DERATE input voltage VDERATE increases. The output current derating function can be used for supply overvoltage protection and thermal protection with a thermistor. The DERATE current curves are divided into 32 steps between 100% and 50% with hysteresis.
In the case where DERATE is used for battery voltage sensing, the resistor-divider ratio can be set in a typical application as follows.