JAJSKM1C october 2019 – september 2021 UCC5870-Q1
PRODUCTION DATA
The soft turn-off (STO) function prevents power transistors from OV damage because of parasitic loop inductance induced voltage spikes on VCE. The STO slows down the turn-off process that to limit the di/dt rate, and thus limits the loop inductance induced voltage spikes. During STO, the OUTL drive strength is reduced to the threshold programmed using the CFG5[STO_CURR] bits (CFG5). The STO function is enabled for PS_OC, PS_SC, PS_TSD, and/or DESAT faults using the CF5[2LTOFF_STO_EN] bits (CFG5).