Switch device
Number of patents in Portfolio can not be more than 2000
United States of America
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Feb 11, 2025
Grant Date -
Apr 4, 2024
app pub date -
Dec 7, 2023
filing date -
Dec 7, 2023
priority date (Note) -
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status (Latency Note)
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Abstract
An example switch device includes a switching element to connect/disconnect a current path from a power supply terminal to a ground terminal via a load, and an overcurrent protection circuit to limit output current flowing in the switching element to be an overcurrent limit value or less. When an output short circuit of the load is detected, the overcurrent protection circuit decreases the overcurrent limit value to be lower as a power supply voltage is higher. The overcurrent protection circuit includes a reference current generation portion that includes: a differential amplifier portion, an upper side current generation portion arranged to generate a predetermined an upper side current, a lower side current generation portion arranged to generate a lower side current, and a difference current generation portion arranged to output a difference current based on the lower side current and the upper side current, as the reference current.
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