JAJSM18A November 2021 – March 2022 LM66100-Q1
PRODUCTION DATA
The shortcoming of the previous implementation happens when both input voltages are the same for a long period of time. Then, both devices completely turn off, powering down the output load. To avoid this case, use the status output from the priority supply and a pullup resistor, causing both devices to switchover at the same time. For ORing applications that need RPP, TI recommends to use a series resistor (RCE) to limit the current into the CE pin during a negative voltage event.