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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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INA745AIRELR датащи(PDF) 35 Page - Texas Instruments |
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INA745AIRELR датащи(HTML) 35 Page - Texas Instruments |
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35 / 50 page  GND A0 ALERT SDA SCL 0.1µF VS Power supply voltage (2.7V to 5.5V) Bus supply rail (upto 40V) IS+ TI Device LOAD SH+ IN+ A1 VBUS SH− IN− IS− Figure 8-2. INA745x High-Side Sensing Application Diagram 8.2.1 Design Requirements The design requirements for the circuit shown in Figure 8-2 are listed in Table 8-3. Table 8-3. Design Parameters DESIGN PARAMETER EXAMPLE VALUE Power-supply voltage (VS) 5V Bus supply rail (VCM) 12V Bus supply rail overvoltage fault threshold 16V Average Current 18A Overcurrent fault threshold (IMAX) 21A Temperature 85°C Charge Accumulation Period 15 minutes 8.2.2 Detailed Design Procedure 8.2.2.1 Configure the Device The first step to program the INA745x is to properly set the device and ADC configuration registers. On initial power up, the CONFIG and ADC_CONFIG registers are set to the reset values as shown in Table 7-3 and Table 7-4. In this default power-on state the device is set with the ADC continuously converting the temperature, current, and bus voltage. If the default power-up conditions do not meet the design requirements, these registers must be set properly after each VS power cycle event. 8.2.2.2 Set Desired Fault Thresholds Fault thresholds are set by programming the desired trip threshold into the corresponding fault register. Table 6-1 lists the supported fault registers. www.ti.com INA745A, INA745B SBOSAC3B – JULY 2023 – REVISED AUGUST 2025 Copyright © 2025 Texas Instruments Incorporated Submit Document Feedback 35 Product Folder Links: INA745A INA745B |
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