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5通道(3路+V和2路-V)热插拔参考设计

5通道(3路+V和2路-V)热插拔参考设计

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图5. -5V负载关断,50mA负载
Ch1 = Q8BASE, Ch2 = -5VGATE, Ch3 = -5VOUT, Ch4 = IIN(-5V)
注释:虽然由于输出电容放电导致VOUT(-5V)没有达到0V,-5V在1ms内下降至零。

图6. -12V栅极关断,没有负载Ch1 = Q8BASE, Ch2 = +3.3VGATE, Ch3 = +12VGATE, Ch4 = -12VGATE注释:-12V栅极关断较慢;当1 < VGATE < 3V (2.5V,典型值)时,FET关断。由此,正电压通道关断1ms至4ms后,-12V栅极完全关断。
图6. -12V栅极关断,没有负载
Ch1 = Q8BASE, Ch2 = +3.3VGATE, Ch3 = +12VGATE, Ch4 = -12VGATE
注释:-12V栅极关断较慢;当1 < VGATE < 3V (2.5V,典型值)时,FET关断。由此,正电压通道关断1ms至4ms后,-12V栅极完全关断。

图7. -12V负载关断,150mA负载Ch1 = Q8BASE, Ch2 = -12VGATE, Ch3 = -12VOUT, Ch4 = IIN(-12V) 注释:虽然由于输出电容放电导致VOUT(-12V)没有达到0V,-12V输入在4ms内降到零。
图7. -12V负载关断,150mA负载
Ch1 = Q8BASE, Ch2 = -12VGATE, Ch3 = -12VOUT, Ch4 = IIN(-12V)
注释:虽然由于输出电容放电导致VOUT(-12V)没有达到0V,-12V输入在4ms内降到零。

图8. -12V接通波形Ch1 = Q8BASE, Ch2 = -12VGATE, Ch3 = -12VOUT, Ch4 = IIN(-12V) 注释:接通顺序,80Ω阻性负载 = 150mA。
图8. -12V接通波形
Ch1 = Q8BASE, Ch2 = -12VGATE, Ch3 = -12VOUT, Ch4 = IIN(-12V)
注释:接通顺序,80Ω阻性负载 = 150mA。

图9. -12V接通波形,没有负载Ch1 = Q8BASE, Ch2 = -12VGATE, Ch3 = -12VOUT, Ch4 = IIN(-12V) 注释:IIN(PK) = 80mA,对输出电容充电。
图9. -12V接通波形,没有负载
Ch1 = Q8BASE, Ch2 = -12VGATE, Ch3 = -12VOUT, Ch4 = IIN(-12V)
注释:IIN(PK) = 80mA,对输出电容充电。

图10. -5V接通波形,100Ω阻性负载 = 50mA Ch1 = Q8BASE, Ch2 = -5VGATE, Ch3 = -5VOUT, Ch4 = IIN(-5V) 注释:-5V摆率大约为1V/ms。
图10. -5V接通波形,100Ω阻性负载 = 50mA
Ch1 = Q8BASE, Ch2 = -5VGATE, Ch3 = -5VOUT, Ch4 = IIN(-5V)
注释:-5V摆率大约为1V/ms。

图11. -5V接通波形,没有负载Ch1 = Q8BASE, Ch2 = -5VGATE, Ch3 = -5VOUT, Ch4 = IIN(-5V) 注释:IIN(PK) = 55mA,对输出电容充电。
图11. -5V接通波形,没有负载
Ch1 = Q8BASE, Ch2 = -5VGATE, Ch3 = -5VOUT, Ch4 = IIN(-5V)
注释:IIN(PK) = 55mA,对输出电容充电。

图12. +3.3V接通波形,没有负载Ch1 = Q8BASE, Ch2 = +3.3VGATE, Ch3 = +3.3VOUT, Ch4 = IIN(+3.3V) 注释:IIN(PK) = 400mA,对输出电容充电;+3.3V摆率大约为1V/ms。
图12. +3.3V接通波形,没有负载
Ch1 = Q8BASE, Ch2 = +3.3VGATE, Ch3 = +3.3VOUT, Ch4 = IIN(+3.3V)
注释:IIN(PK) = 400mA,对输出电容充电;+3.3V摆率大约为1V/ms。

图13. +3.3V接通波形,1.1Ω负载 = 3A Ch1 = Q8BASE, Ch2 = +3.3VGATE, Ch3 = +3.3VOUT, Ch4 = IIN(+3.3V)
图13. +3.3V接通波形,1.1Ω负载 = 3A
Ch1 = Q8BASE, Ch2 = +3.3VGATE, Ch3 = +3.3VOUT, Ch4 = IIN(+3.3V)

图14. +3.3V过流关断Ch1 = STAT1, Ch2 = VGATE (+3.3V), Ch3 = +3.3VOUT, Ch4 = IOUT(+3.3V) 0.5A/div注释:IOUT和VOUT减小是由于输出电容向恒阻负载放电。测得的触发电流为3.22A。*
图14. +3.3V过流关断
Ch1 = STAT1, Ch2 = VGATE (+3.3V), Ch3 = +3.3VOUT, Ch4 = IOUT(+3.3V) 0.5A/div
注释:IOUT和VOUT减小是由于输出电容向恒阻负载放电。测得的触发电流为3.22A。*

图15. +5V接通负载电容充电电流,没有负载Ch1 = Q8BASE, Ch2 = +5VGATE, Ch3 = +5VOUT, Ch4 = IIN(+5V) 注释:IIN(PK) = 500mA,对输出电容充电。
图15. +5V接通负载电容充电电流,没有负载
Ch1 = Q8BASE, Ch2 = +5VGATE, Ch3 = +5VOUT, Ch4 = IIN(+5V)
注释:IIN(PK) = 500mA,对输出电容充电。

图16. +5V接通电流,2.083Ω负载 = 2.4A Ch1 = Q8BASE, Ch2 = +5VGATE, Ch3 = +5VOUT, Ch4 = IIN(+5V)
图16. +5V接通电流,2.083Ω负载 = 2.4A
Ch1 = Q8BASE, Ch2 = +5VGATE, Ch3 = +5VOUT, Ch4 = IIN(+5V)

图17. +5V过流关断Ch1 = STAT2, Ch2 = VGATE (+5V), Ch3 = +5VOUT, Ch4 = IOUT(+5V) 0.5A/div注释:IOUT和VOUT减小是由于输出电容向恒阻负载放电。测得的触发电流为2.87A。
图17. +5V过流关断
Ch1 = STAT2, Ch2 = VGATE (+5V), Ch3 = +5VOUT, Ch4 = IOUT(+5V) 0.5A/div
注释:IOUT和VOUT减小是由于输出电容向恒阻负载放电。测得的触发电流为2.87A。

图18.
图18. +12V启动电流,没有负载
Ch1 = Q8BASE, Ch2 = +12VGATE, Ch3 = +12VOUT, Ch4 = IIN(+12V)
注释:IIN(+12Vpk) = 500mA,对输出电容充电。

图19. +12V接通电流,4Ω负载 = 3A Ch1 = Q8BASE, Ch2 = +12VGATE, Ch3 = +12VOUT, Ch4 = IIN(+12V)
图19. +12V接通电流,4Ω负载 = 3A
Ch1 = Q8BASE, Ch2 = +12VGATE, Ch3 = +12VOUT, Ch4 = IIN(+12V)

图20. +12V过流关断Ch1 = STAT3, Ch2 = VGATE (+12V), Ch3 = +12VOUT, Ch4 = IOUT(+3.3V) 0.5A/div注释:IOUT和VOUT减小是由于输出电容向恒阻负载放电。测得的触发电流为3.1A。
图20. +12V过流关断
Ch1 = STAT3, Ch2 = VGATE (+12V), Ch3 = +12VOUT, Ch4 = IOUT(+3.3V) 0.5A/div
注释:IOUT和VOUT减小是由于输出电容向恒阻负载放电。测得的触发电流为3.1A。

图21. 短路电路的+5V启动电流Ch1 = Q8BASE, Ch2 = +5VOUT, Ch3 = +5VGATE, Ch4 = IIN(+5V) 注释:触发时的4A负载电流。
图21. 短路电路的+5V启动电流
Ch1 = Q8BASE, Ch2 = +5VOUT, Ch3 = +5VGATE, Ch4 = IIN(+5V)
注释:触发时的4A负载电流。

图22. 短路电路的+12V启动电流Ch1 = Q8BASE, Ch2 = VOUT, Ch3 = VGATE, Ch4 = IOUT注释:触发时的5.7A负载电流。

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