What is reverse-current blocking using external back-to-back MOSFETs?

Back-to-back connection
Back-to-back connection

Two N-channel MOSFETs are externally connected back-to-back (in a common-source configuration or a common-drain configuration) when a load switch using a gate drive IC needs a function for blocking the current flowing into the load switch in the reverse direction. This function is called reverse-current blocking.

Power multiplexer circuit

Power multiplexer circuit with 2 input and 1 output is implemented on a small PCB.
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Power multiplexer circuit

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