AC/DC 홀 전류 센서 25A -TLI4971-A025T5
(HALL CURRENT 8 CLICK - 25A)
개요
- 본 제품은 AC/DC 홀 전류 센서 25A -TLI4971-A025T5입니다.
- TLI4971-A025T5 센서 칩을 탑재하고 있습니다.
- 하나의 아날로그 인터페이스와 2개의 고속 과전류 검출 출력 포트를 가지고 있습니다.
- 최대 25A까지 측정이 가능합니다.
- 알림: 외부전원이 공급되면 안전을 위해 보드를 만지지 마십시오.
특징
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Hall Current 8 Click as its foundation uses the TLI4971-A025T5, a high-precision miniature coreless magnetic current sensor for AC and DC measurements with an analog interface and two fast overcurrent detection outputs from Infineon Technologies. The well-established Hall technology, on which the TLI4971 is based, enables accurate and highly linear measurement of currents with a full scale that depends on the chosen product variant, in this case, up to 25A. Typical applications are electrical drives and general-purpose inverters. It is suitable for fast over-current detection, which allows the control unit to switch off and protect the affected system from damage, independently from the primary measurement path.
The preconfigured output mode of the TLI4971-A025T5 is set to semi-differential mode. Current flowing through the primary conductors are galvanically isolated, protecting low-voltage parts of the Click board™, as well as the host MCU, and induces a magnetic field that is differentially measured by two Hall probes. A high-performance amplifier combines the signal resulting from the differential field and the internal compensation information provided by the temperature and stress compensation unit. Then the amplifier output signal is fed into a differential output amplifier, which drives the sensor's analog output available on the AN pin of the mikroBUS™ socket.
In addition to the already mentioned characteristics, this Click board™ also has two separate interface pins (OCD), routed to the PWM and INT pins of the mikroBUS socket. They provide fast output signals if a current exceeds a preset threshold in combination with the red and yellow LEDs marked with OCD1 and OCD2. Those pins offer a swift response, thanks to independence from the main signal path. They can be used as a trap functionality to quickly shut down the current source and precisely detect mild overload conditions.
Also, this Click board™ should be connected in series with the load. The current is measured by two onboard terminal connectors, one terminal block for the positive and the other for the negative current input.
This Click board™ can be operated only with a 3.3V logic voltage level. The board must perform appropriate logic voltage level conversion before use with MCUs with different logic levels. However, the Click board™ comes equipped with a library containing functions and an example code that can be used, as a reference, for further development.
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Type Current sensor Applications Can be used for AC/DC current measurement applications: electrical drives, general-purpose inverters, chargers, current monitoring, overload, over-current detection, and many more. On-board modules TLI4971-A025T5 - high-precision miniature coreless magnetic current sensor for AC and DC measurements up to 25A with an analog interface and two fast overcurrent detection outputs from Infineon Technologies Key Features High accurate, scalable, DC & AC current sensing, analog interface and two independent fast Over-Current Detection (OCD) outputs, very low sensitivity error over temperature, and more. Interface Analog Compatibility mikroBUS Click board size M (42.9 x 25.4 mm) Input Voltage 3.3V