SHORT-CIRCUIT PROTECTION SOLUTION FOR POWER DEVICES
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United States of America Patent
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Apr 1, 2021
app pub date -
Sep 25, 2020
filing date -
Sep 26, 2019
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Abstract
A reliable short-circuit protection scheme for all switching power devices is presented. This protection scheme includes an ultra-fast short-circuit detection component to quickly detect that a short-circuit may be occurring, a voltage clamping component to prevent short-term damage to the device, and a detection component that performs a system safe shutdown of the device in the event that a conventional slow over-current detection procedure verifies the short-circuit. This protection scheme can be applied to all switching devices and is especially suitable for wide bandgap (WBG) power devices which features high di/dt and high dv/dt switching capability. This protection scheme features reliable detection and protection, easy implementation, and low cost.
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