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The information presented in this cross reference is based on TOSHIBA's selection criteria and should be treated as a suggestion only. Please carefully review the latest versions of all relevant information on the TOSHIBA products, including without limitation data sheets and validate all operating parameters of the TOSHIBA products to ensure that the suggested TOSHIBA products are truly compatible with your design and application.
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eFuse IC与传统保险丝的性能比较
短路保护操作的结果
|
eFuse IC （TCKE812NL） |
可恢复式保险丝 |
片式保险丝 |
|---|---|---|---|
额定电流 |
3A（设定值） |
3.1A（额定值） |
3A（额定值） |
中断时间 |
2μs |
2.9S |
7μs |
保护操作审查 |
|
|
|
确认有70A以上的大电流瞬间流过可恢复式保险丝和片式保险丝，片式保险丝熔断。
上图显示了eFuse IC与传统保险丝（可恢复式保险丝、片式保险丝）短路保护性能的对比结果。
我们检查了当输出短路到接地时输出电流的关断时间。
（为进行比较，eFuse IC、可恢复式保险丝和片式保险丝的过电流设定值统一为3A左右。）
结果，左图所示的eFuse IC的关断时间约为2μs，而中间示例图显示的可恢复式保险丝的关断时间约为3秒，右图所示的片式保险丝的关断时间约为7μs。
峰值电流也被eFuse IC抑制至大约35A。
然而，传统保险丝不适合该测量范围，并且会流经70A或以上的大电流。
