ZHCSFK9B September 2016 – December 2021 UCC28951-Q1
PRODUCTION DATA
Before the UCC28951-Q1 controller will start up, the following conditions must be met:
If all those conditions are met, an internal enable signal EN is generated that initiates the soft-start process. The duty cycle during the soft start is defined by the voltage at the SS pin, and cannot be lower than the duty cycle set by TMIN, or by cycle-by-cycle current limit circuit depending on load conditions.