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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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AMC3301-Q1 Fiches technique(PDF) 23 Page - Texas Instruments |
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AMC3301-Q1 Fiches technique(HTML) 23 Page - Texas Instruments |
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23 / 37 page  8.2 Typical Application Isolated amplifiers are widely used for shunt-based current measurements in high-voltage applications that must be isolated from a low-voltage domain. Typical applications are phase current measurements in traction inverters, or DC current measurements at the output of a power factor correction (PFC) stage or DC/DC converter in an on-board charger (OBC). The AMC3301-Q1 integrates an isolated power supply for the high- voltage side and therefore is particularly easy to use in applications that do not have a high-side supply readily available or where a high-side supply is referenced to a different ground potential than the signal to be measured. Figure 8-1 shows a simplified schematic using the AMC3301-Q1 to measure the output current of a PFC stage of an OBC. At this location in the system, there is no supply readily available for powering the high-side of the isolated amplifier. The integrated isolated power supply solves this problem and, together with its bipolar input voltage range, makes the AMC3301-Q1 ideally suited for bidirectional current sensing. In this example, the AC line-voltage is sensed by the AMC3330-Q1 on the grid-side where there is also no suitable supply available for powering the high-side of the isolated amplifier. The integrated power supply, high input impedance, and bipolar input voltage range of the AMC3330-Q1 makes the device ideally suited for AC voltage sensing applications. to MCU Analog Filter to MCU Analog Filter N RDC2 RDC1 L1 L2 L3 RDC3 PFC RSHUNT,DC To Battery Management System RSHUNT,BUS DC-Link VBUS + DC/DC VBUS ± RBUS2 RBUS1 RBUS3 RL11 RL1SNS N RL12 N N 1 µF 100 nF 1 nF 1 nF 100 nF 10 Ÿ 10 Ÿ 8.2 nF DCDC_OUT DCDC_HGND HLDO_IN HLDO_OUT HGND INP INN NC AMC3330-Q1 1 µF 1 nF 100 nF 47 NŸ DCDC_IN LDO_OUT VDD OUTP OUTN GND DIAG DCDC_GND 3.3 V / 5 V supply to uC (optional) GND 1 µF 100 nF 1 nF 1 nF 100 nF 10 Ÿ 10 Ÿ 8.2 nF DCDC_OUT DCDC_HGND HLDO_IN HLDO_OUT HGND INP INN NC AMC3301-Q1 1 µF 1 nF 100 nF 47 NŸ DCDC_IN LDO_OUT VDD OUTP OUTN GND DIAG DCDC_GND 3.3 V / 5 V supply to uC (optional) GND 1 µF 100 nF 1 nF 1 nF 100 nF 10 Ÿ 10 Ÿ 8.2 nF DCDC_OUT DCDC_HGND HLDO_IN HLDO_OUT HGND INP INN NC AMC3330-Q1 1 µF 1 nF 100 nF 47 NŸ DCDC_IN LDO_OUT VDD OUTP OUTN GND DIAG DCDC_GND 3.3 V / 5 V supply to uC (optional) GND N to MCU Analog Filter Figure 8-1. The AMC3301-Q1 in in an OBC Application www.ti.com AMC3301-Q1 SBASA73 – JULY 2020 Copyright © 2020 Texas Instruments Incorporated Submit Document Feedback 23 Product Folder Links: AMC3301-Q1 |
Numéro de pièce similaire - AMC3301-Q1 |
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Description similaire - AMC3301-Q1 |
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