Equivalent ideal diode circuit analysis
The whole point of an ideal diode is to detect and turn on when the output voltage is less than the input voltage.

All your circuit does is turn on the MOSFET when the voltage on the right is high enough.

In other words... your circuit is not even a non-ideal diode.







simulate this circuit &ndash; Schematic created using CircuitLab

The "other" components you mention form a comparator around the MOSFET and only turn it on if the left side voltage > right side voltage.

Your circuit could I guess be used for reverse polarity protection though assuming the voltage on the right has no, or a very short, residual after being unplugged on the left.