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Moteur de recherche de fiches techniques de composants électroniques |
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Moteur de recherche de fiches techniques de composants électroniques |
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BTS50020-1TAD Fiches technique(PDF) 32 Page - Infineon Technologies AG |
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BTS50020-1TAD Fiches technique(HTML) 32 Page - Infineon Technologies AG |
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32 / 51 page  Data Sheet 32 Rev. 1.1 2017-03-28 BTS50020-1TAD Smart High-Side Power Switch Functional Description The offset is defined as follows: (5.7) The bluish area in Figure 29 is the range where the current sense ratio can vary across temperature and load current after performing the calibration. The accuracy of the load current sensing is improved and, given a sense current value IIS (measured in the application), the load current can be calculated as follow, using the absolute value for ∆(dkILIS(cal)) instead of % values: (5.8) where dkILIS(cal) is the current sense ratio measured after two-points calibration (defined in Equation (5.6)), IIS0(cal) is the current sense offset (calculated after two points calibration, see Equation (5.7)), and ∆IIS0(cal) is the additional variation of the individual offset over life time and temperature. For a calibration at 25°C ∆IIS0(cal) varies over temperature and life time for all positive ∆IIS0(cal) within the differences of the temperature dependent Max. limits. All negative ∆IIS0(cal) vary within the differences of the temperature dependent Min. limits. For positive IIS0(cal) values (IIS0(cal) >0): (5.9) For negative IIS0(cal) values (IIS0(cal) <0): (5.10) Equation (5.8) actually provides four solutions for load current, considering that ∆(dkILIS(cal)) and ∆IIS0(cal) can be both positive and negative. The load current IL for any sense current IIS will spread between a minimum IL value resulting from the combination of lowest ∆(dkILIS(cal)) value and highest ∆IIS0(cal) and a maximum IL value resulting from the combination of highest ∆(dkILIS(cal)) value and lowest ∆IIS0(cal). IIS0(cal) = IIS(cal)1 − IL(cal)1 dkILIS(cal) = IIS(cal)2 − IL(cal)2 dkILIS(cal) IL = dkILIS(cal) × (1 + ∆(dkILIS(cal))) × (IIS − IIS0(cal) − ∆IIS0(cal)) Max IIS0 (@TJ = 150°C) − Max IIS0 (@TJ = 25°C) ≤ ∆IIS0(cal) ≤ Max IIS0 (@TJ = -40°C) − Max IIS0 (@TJ = 25°C) Min IIS0 (@TJ = 150°C) − Min IIS0 (@TJ = 25°C) ≥ ∆IIS0(cal) ≥ Min IIS0 (@TJ = -40°C) − Min IIS0 (@TJ = 25°C) |
Numéro de pièce similaire - BTS50020-1TAD |
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Description similaire - BTS50020-1TAD |
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