| 摘要 |
<p>Disclosed is an overvoltage protection circuit which includes a first terminal through which a first voltage is supplied to an internal circuit; a second terminal through which a second voltage is supplied; a rectifier having an input end connected to the first terminal and having an output end; and first-stage to n-th-stage switching elements which are connected in parallel to one another. The first-stage to n-th-stage switching elements have first to n-th controlling ends, respectively. Each of the switching elements has first and second controlled ends connected to the first terminal and the second terminal, respectively. The rectifier is configured to output a control voltage from the output end thereby to cause the first-stage to n-th-stage switching elements to be turned on, in response to receipt of an overvoltage from the first terminal.</p> |
