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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.
Please note that this cross reference is based on TOSHIBA's estimate of compatibility with other manufacturers' products, based on other manufacturers' published data, at the time the data was collected.
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2-4.浪涌电流降低
浪涌电流限流功能控制转换速率以降低浪涌电流。
一旦负载开关IC导通，其输出电压会瞬间增大，导致可能超过负载IC或电路额定电压的过冲现象。
此外，浪涌大电流流入负载开关IC，以对连接VOUT引脚的输出滤波电容器进行充电。浪涌电流发生在从负载开关IC导通至输出电压稳定的这段时间内。如果VIN引脚连接具有大阻抗的电路板迹线，则输入电压可能会因浪涌电流在迹线阻抗上发生压降而下降。因此负载开关IC无法提供正常的输出电压电平。
负载开关IC导通后，浪涌电流限流功能将输出电流缓慢升高以限制浪涌电流，从而抑制输出电压过冲和输入电压降。因此，浪涌电流限制有助于提高系统稳定性。
浪涌电流限流也称为转换速率控制或软启动。
