JAJSR37A August 2023 – September 2023 UCC14340-Q1
PRODUCTION DATA
The input overvoltage lockout protection is used to protect the UCC14340-Q1 devices from overvoltage damage. It has an auto-recovery response. When the VVIN pin voltage becomes higher than the input overvoltage lockout threshold VVIN_OVLO_RISE, switching stops, converter stops sending energy to the secondary side. After input overvoltage lockout protection, after VVIN pin voltage drop below the recovery threshold VVIN_OVLO_FALLING, depending on the ENA pin voltage status, the converter can either resuming operation, go through the full soft-start process, or in the disabled mode, wait for ENA pin becomes high. The input overvoltage lockout does not reset other latch-off protections.