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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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TPS2480PW датащи(PDF) 38 Page - Texas Instruments |
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TPS2480PW датащи(HTML) 38 Page - Texas Instruments |
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38 / 60 page  Cal=trunc 0.04096 Current_LSB R ´ SHUNT Cal=4096 Power_LSB=20 Current_LSB ´ Power_LSB=400 10 ´ -6 Max_Current=Current_LSB 32767 ´ Max_Current=0.65534 TPS2480 TPS2481 SLUS939B – APRIL 2010 – REVISED DECEMBER 2010 www.ti.com 5. Compute the Calibration Register value using Equation 33: (33) 6. Calculate the Power LSB, using Equation 34. Equation 34 shows a general formula; because the bus voltage measurement LSB is always 4 mV, the power formula reduces to the calculated result. (34) 7. Compute the maximum current and shunt voltage values (before overflow), as shown by Equation 35 and Equation 36. Note that both Equation 35 and Equation 36 involve an If - then condition: (35) If Max_Current ≥ Max Possible_I then Max_Current_Before_Overflow = MaxPossible_I Else Max_Current_Before_Overflow = Max_Current End If NOTE (Max_Current is greater than MaxPossible_I in this example.) 38 Submit Documentation Feedback Copyright © 2010, Texas Instruments Incorporated Product Folder Link(s): TPS2480 TPS2481 |
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