The NIS6111 is a simple and reliable device consisting of an integrated control IC with a low RDS(on) power MOSFET, using hybrid technology. It is designed to replace Schottky diodes in ORing applications to obtain higher system power efficiency. It can be connected to allow load sharing with automatic switchover of the load between two or more input power supplies. A single NIS6111 is able to run up to 20 A without any air flow. To meet high current requirement ( i.e. 60 A), the NIS6111 is designed to drive more than four paralleled additional NTD110N02 MOSFETs. The unique package design of NIS6111 offers higher thermal efficiency to minimize cooling requirements. This application note presents more details of the 30 A and 60 A demonstration boards. Both of them can be easily connected to power sources and loads for any test purpose.