JAJSKC8C April 2022 – August 2023 TPSI3052-Q1
PRODUCTION DATA
As described in the CDIV1, CDIV2 Capacitance section, the start-up time of the fully discharged VDDH rail depends on the amount of capacitance present on the VDDH supply. The rate at which this capacitance is charged depends on the amount of power transferred from the primary side to the secondary side. The amount of power transferred can be adjusted by choosing RPXFR. Increasing the resistor settings for RPXFR transfers more power from the primary supply (VDDP) to the secondary supply (VDDH), thereby reducing the overall start-up and recovery times.