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BTT6200-1ENA データシート(PDF) 24 Page - Infineon Technologies AG |
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BTT6200-1ENA データシート(HTML) 24 Page - Infineon Technologies AG |
24 / 46 page Data Sheet 24 Rev. 1.0 2018-05-14 PROFET™+ 24 V BTT6200-1ENA Diagnostic Functions 7.3 SENSE Signal in the Nominal Current Range Figure 20 shows the current sense as a function of the load current in the power DMOS. Usually, a pull-down resistor RIS is connected to the current sense IS pin. This resistor has to be higher than 560 Ω to limit the power losses in the sense circuitry. A typical value is 1.2 kΩ. The blue curve represents the ideal sense current, assuming an ideal kILIS factor value. The red curves shows the accuracy the device provides across full temperature range at a defined current. Figure 20 Current Sense for Nominal Load 7.3.1 SENSE Signal Variation as a Function of Temperature and Load Current In some applications a better accuracy is required at smaller currents. To achieve this accuracy requirement, a calibration on the application is possible. To avoid multiple calibration points at different load and temperature conditions, the BTT6200-1ENA allows limited derating of the kILIS value, at a given point (IL3; TJ= +25°C). This derating is described by the parameter ΔkILIS. Figure 21 shows the behavior of the sense current, assuming one calibration point at nominal load at +25°C. The blue line indicates the ideal kILIS ratio. The green lines indicate the derating on the parameter across temperature and voltage, assuming one calibration point at nominal temperature and nominal battery voltage. The red lines indicate the kILIS accuracy without calibration. 0 0.5 1 1.5 0 1 2 3 4 5 6 I L [A] min/max Sense Current typical Sense Current BTT6200-1EJA |
同様の部品番号 - BTT6200-1ENA |
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同様の説明 - BTT6200-1ENA |
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