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Semiconductor device providing overvoltage and overcurrent protection for a line
Semiconductor device providing overvoltage and overcurrent protection for a line
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机译:半导体器件为线路提供过压和过流保护
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摘要
An integrated circuit (40) providing overvoltage and overcurrent protection to a line (16). The integrated circuit (40) is constructed to provide overvoltage protection when a voltage exceeding a specified magnitude is impressed across the cathode and anode terminals (64, 66), irrespective of the gate-cathode current. A gate terminal (72) is provided to trigger the overvoltage protection device into conduction when a gate current exceeding a predefined value is carried on the line (16). The gate-cathode structure of the integrated circuit (40) includes a semiconductor resistance (74) which functions to make the gate current required for turn on higher, thereby allowing the gate-cathode terminals (64, 72) of the integrated circuit (40) too be connected in series with the line (16) to be protected.
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