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Датчики тока

Описание:
The TIDA-00753 reference design demonstrates high accuracy wide range AC current measurment for a three phase motor using the INA199 zero drift architecture. The design also has low power consumption of 25mW for Gain stage of 200 as compared to a discrete solution. The design footprint and BOM cost is much smaller than a discrete solution due to the integrated high precision resistors inside the INA199.

Возможности:

0.5 % Accuracy (Uncalibrated) for 10 to 100 % of Full Scale Primary Current Power Consumption of 25 mW for Gain Stage Small Footprint no need of External Resistors for Amplfication

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Документация:
  • Схемотехника
  • BOM
Описание:

Предохранители используются в различной продукции для защиты от скачков тока и повреждений, вызванных перегрузкой. Обычные предохранители, используемые в автомобильной промышленности, характеризуется низкой точностью и большим временем срабатывания. TIDA-00795 - базовый проект прецизионного электронного предохранителя для автомобильной промышленности, представляет собой замену традиционным предохранителям, имея более высокую точность, а также другие особенности, не характерные для традиционных предохранителей. Данный базовый проект электронного предохранителя может быть использован в качестве строительного блока для реализации мультиканального устройства с электронными предохранителями. Его также можно применить в модуле управления кузовом и в электронном блоке управления.

Возможности:

  • Точность выше 97 %
  • Регулируемое время задержки для согласования с пусковым током: 10, 50 и 100 мкс
  • Регулируемое ограничение тока до 30 А (с масштабированием свыше 100 А)
  • Время срабатывания: максимум 10 мкс (регулируется временем задержки)
  • Соответствует требованиям ISO 7637_2 по переходным процессам в бортсетях 12 В

Возможность заказа
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Документация:
  • Схемотехника
  • BOM
Описание:
Precision control of automotive proportional solenoids is necessary to achieve the precise control in an automatic transmission, in electronic fuel injectors, and in several automotive actuator applications. In proportional solenoids, the current flowing through the coil is directly oportional to the magnetic field generated. The designer can estimate armature position by knowing the current that is flowing through the solenoid. By forming a closed-loop solenoid control with high-accuracy current sensors, the designer is able to control the proportional olenoid in a precise manner. This order of control implies that highaccuracy current sensors are critical to achieve precise control of solenoids. Some of the main aspects to consider when selecting a current sensor are less offset, less drift, and higher pulse-width-modulation (PWM) rejection ration. By combining the above three features, this reference design shows a way to precisely measure the current flowing through the solenoid using TI's current shunt monitoring portfolio.
Возможности:

Uncalibrated accuracy: less than 1% for more than 10 mA over temperature (–40°C to 125°C) Suitable for various solenoid current ranges Low drift, high precision High-side drive, high-side solenoid monitor Enhanced PWM rejection facilitates uniform current profile Lowers blanking time and enables accurate measurements at lower duty cycle

Документация:
  • Схемотехника
  • BOM
Описание:
This shunt-based current sensor reference design provides an accuracy of < 0.2% FSR over a temperature range of -40°C to +125°C. Precision current sensing is essential in a number of automotive applications, including battery management systems, motor currents, and others. Generally, nonlinearity, temperature drift, shunt tolerances in these locations can cause poor accuracy results. This design solves these problems by using TI’s current shunt monitors and signal conditioners (INA240, PGA400-Q1).
Возможности:

Accuracy of 0.2% FSR, over temperature (-40°C to 125°C) Suitable for ±500A, high/low-side current sensing Compensated for temperature and non-linearity (second order temperature and linearity compensation algorithm) Protection against harness faults (overvoltage, reverse polarity, input/output signal protection) Electromagnetic interference (EMI) protection

Документация:
  • Схемотехника
  • BOM
  • Топология платы
Описание:
This reference design shows how to detect current from the mA-to-KA range using a busbar-type shunt resistor. The increasing demand of high-capacity batteries in electric vehicles (EVs) and hybrid electric vehicles (HEVs) drives the requirement for larger current spans and highly-accurate current sensors. Obtaining a good accuracy over three decades (mA to A, 1 A to 100 A, and 100 A to 1000 A) is quite challenging due to large amounts of noise in the system. This design solves this problem by using a high-resolution analog-to-digital converter (ADC) and high-accuracy current shunt monitors from TI.
Возможности:

Full-scale accuracy of: 0.02% full-scale range (FSR) for < 20A and < 0.05% FSR for 20A to 1500A at 25°C 0.1% FSR for < 20A and0.25% FSR for 20A to 1500A at 50°C Suitable for 50mA to 1500A range current measurement; configurable to varied current spans High-side sensing and low-side sensing Supports bi-directional current Bi-directional current measurement: -1500A to +1500A

Документация:
  • Схемотехника
  • BOM
Описание:
This single-supply open loop current sensing solution to accurately measure dc, ac and pulsed currents. Allows highly accurate current measurements up to 110 A

Возможности:

• Current range up to 100 A • Integrated fluxgate sensor • Sensitivity of 20 mV/A • Current range up to 100 A • Integrated fluxgate sensor • Sensitivity of 20 mV/A

Документация:
  • Даташит
  • Схемотехника
  • BOM

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