SEMICONDUCTOR SWITCH DRIVE CIRCUIT WITH TRANSFER RESTRICTING CIRCUITRY
Number of patents in Portfolio can not be more than 2000
United States of America
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Issued Date -
Mar 20, 2025
app pub date -
Dec 5, 2024
filing date -
Dec 5, 2024
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Abstract
A semiconductor switch drive circuit includes: a first capacitor to be charged by a drive power source and to generate a positive voltage that sets a semiconductor switch to an ON state, a second capacitor to be charged by the drive power source, a third capacitor to be charged by the second capacitor and to generate a negative voltage that sets the semiconductor switch to an OFF state, and connection switching circuitry that alternately switches between a first connection state in which a control terminal of the semiconductor switch is supplied with the positive voltage, and a second connection state in which the control terminal is supplied with the negative voltage. A transfer restricting circuitry that is electrically connected to the positive terminal of the first capacitor causes the positive voltage output from the first capacitor, to be supplied to the control terminal of the semiconductor switch.
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