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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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LTM4677 датащи(PDF) 11 Page - Analog Devices |
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LTM4677 датащи(HTML) 11 Page - Analog Devices |
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11 / 110 page  LTC3888-1 11 Rev. 0 For more information www.analog.com TYPICAL PERFORMANCE CHARACTERISTICS 8-Phase DC Output Current Sharing (Using TDA21470) 4-Phase Dynamic Load Sharing 4-Phase Dynamic Load Sharing Typical Distribution of Slave IOUT Offset (Not Including DrMOS Mismatch) Room Typical Distribution of Slave IOUT Offset (Not Including DrMOS Mismatch) Hot Typical Distribution of Slave IOUT Offset (Not Including DrMOS Mismatch) Cold Soft-Start Ramp Start-Up Into a Prebiased Load 4+4 Channel Crosstalk (Using TDA21470) PHASE 0 PHASE 1 PHASE 2 PHASE 3 PHASE 4 PHASE 5 PHASE 6 PHASE 7 TOTAL RAIL CURRENT (A) 0 40 80 120 160 200 240 0 5 10 15 20 25 30 Sharing (Using TDA21470) 8-Phase DC Output Current 3888-1 G10 2s/DIV INDUCTOR CURRENT 5A/DIV 3888-1 G11 VIN = 12V VOUT = 1.0V SYNC = 500kHz L = 215nH 2s/DIV INDUCTOR CURRENT 5A/DIV 3888-1 G12 VIN = 12V VOUT = 1.0V SYNC = 500kHz L = 215nH 2ms/DIV VOUT_COMMAND = 1.0V VOUT_TRANSITION_RATE = 0.1V/ms TON_DELAY = 5ms VOUT 0.5V/DIV RUN 2V/DIV 3888-1 G16 2ms/DIV VOUT 0.5V PREBIAS I(LO) 5V/DIV 3888-1 G17 VOUT_COMMAND = 1.0V VOUT_TRANSITION_RATE = 0.1V/ms 100s/DIV VOUT0 20mV/DIV VOUT1 20mV/DIV IOUT0 40V/DIV 3888-1 G18 ALL 8 PHASES 1047 UNITS FROM 3 LOTS TA = 25°C ISENSE OFFSET TO IDEAL (mV) –8 –6 –4 –2 0 2 4 6 8 0 1000 2000 3000 4000 5000 6000 7000 8000 DrMOS Mismatch) IOUT Offset (Not Including Typical Distribution of Slave 3888-1 G13 ALL 8 PHASES 1035 UNITS FROM 3 LOTS TA = 125°C ISENSE OFFSET TO IDEAL (mV) –8 –6 –4 –2 0 2 4 6 8 0 1000 2000 3000 4000 5000 6000 7000 8000 DrMOS Mismatch) IOUT Offset (Not Including Typical Distribution of Slave 3888-1 G14 ALL 8 PHASES 949 UNITS FROM 3 LOTS TA = –40°C ISENSE OFFSET TO IDEAL (mV) –8 –6 –4 –2 0 2 4 6 8 0 1000 2000 3000 4000 5000 6000 7000 8000 DrMOS Mismatch) IOUT Offset (Not Including Typical Distribution of Slave 3888-1 G15 |
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