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FAN8800 数据表(PDF) 7 Page - Fairchild Semiconductor |
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FAN8800 数据表(HTML) 7 Page - Fairchild Semiconductor |
7 / 16 page FAN8800 (KA3162) 7 Application Information 1. FAULT-OUT DURATION TIME (TDUR) 1) Two modes in Fault-Out Duration. - OCP mode Fault-Out Duration operates after TOCP. -SCP mode If Vpin8 is over 6.5V, Fault-Out Duration will operate after TSCP. 2) TDUR (It can be adjusted by external capacitor (CDUR) is 2. SLOW TURN-OFF (TSLOW) 1) When SCP (Short Circuit Protection) is operated, Q3 turns on and Q2 turns on. 2) In the upper condition, Q2 flows the constant current of 35mA. 3) The capacitance of IGBT as the load is discharging by 35mA, that is Slow Turn-off. 4) Slow Turn-off time is T DUR C DUR 55µA5V 1.4V – () × ⁄ = 2.7nF 55 µA5V 1.4V – () × ⁄ = 176 µs = 5 L O A D Vlink Q3 Q2 Q1 Low Low Internal Circuit T SLOW C IGBT 35mA V5max V5min – () × ⁄ = 4.7nF 35mA 15V 1V – () × ⁄ = 1.9 µs = |
类似零件编号 - FAN8800 |
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类似说明 - FAN8800 |
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