| 摘要 |
<p>Provided is a switching device (3) including: a first switching element (5) primarily used for formation of a two-way current path; a second switching element (6) that forms, at the time when the first switching element (5) is turned off, a current path by switching a parasitic diode from another; and a third switching element (7). The second and third switching elements (6, 7) may be of smaller chip size because they allow a current to flow through them only while the current path of the first switching element (5) is being switched. This contributes miniaturization of the switching device (3) as well as reduction in the ON resistance. Moreover, adoption of the switching device (3) to a protection circuit (2) realizes miniaturization of the protection circuit.
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