ZHCA962 October 2019
The LM5050 device is used to support 2 power supplies in the system to work in backup mode.
The LM5050-1 and LM5050-1-Q1 high-side ORing FET controller operates in conjunction with an external MOSFET as an ideal diode rectifier when connected in series with a power source. This ORing controller allows MOSFETs to replace diode rectifiers in power distribution networks thus reducing both power loss and voltage drops.
The LM5050-1 and LM5050-1-Q1 controllers provide charge pump MOSFET gate drive for an external N-channel MOSFET and a fast response comparator to turn off the FET when current flows in the reverse direction. The LM5050-1 and LM5050-1-Q1 can connect power supplies ranging from 5 V to 75 V and can withstand transients up to 100 V.