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Электронные компоненты и устройства - Рынок электроники

Датчики Холла Melexis MLX91210

Родительская категория: Рынок Категория: Компоненты и устройства

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Компания Melexis представила семейство датчиков Холла MLX91210 для измерения тока. Их преимущества: компактный размер, высокая скорость работы, калибровка, полоса пропускания 100 кГц.

Новые датчики, благодаря своим характеристикам, оптимальны для применения в медицинском оборудовании: очистители воздуха, модуль климатизированный , климатические системы.


Характеристики MLX91210:

Напряжение питания 5 В, чувствительность по току до 26,7 мВ/А

Линейный принцип измерения тока

Диапазон измерения ±75 A, что соотвтетствует среднеквадратичному значению 30 A

Корпус SO8 и SO16

Малые резистивные помехи: 0,8 мОм для SO8 и 0,7 мОм для SO16

Развязка по напряжению 2,1 кВ и 2,5 кВ соответственно (среднеквадратичные значения)

Время отклика 5 мкс

Калибровка производителя

Температурная компенсация

Компенсация эффекта старения 

Диапазон температур -40..+125°C


Speed Isolated Calibrated Current Sensors Provide More Effective Alternative

to Conventional Shunt Based Solutions

Compact, standard footprint packaged ICs

simultaneously offer 100kHz bandwidth, industryleading

accuracy & exceptional crosstalk resilience.

Tessenderlo, Belgium, 11th July 2016 - Melexis, a global

microelectronics engineering company, has further expanded its

comprehensive portfolio of current sensing devices, based on

cutting-edge implementation of Hall effect technology, by

announcing the MLX91210 family.

Running off a 5V supply, MLX91210 ICs have current sensitivity

levels down to 26.7mV/A and support linear current measurement

ranges that span as far as ±75A corresponding to 30A RMS current.

Available in SO8 and SO16 package formats, these fully integrated

Hall-effect current sensors have extremely low resistive losses

(0.8mΩ for the SO8 and 0.7mΩ for the SO16) and provide high voltage isolation ratings (2.1kV RMS and 2.5kV RMS

respectively), as well as accelerated responsiveness (within just 5μs). The sensor output of each IC is factory-calibrated for a

specific current range and compensated for optimal stability in relation to temperature and over the course of its working

lifespan, so that long term accuracy is maintained.

With provision to be factory calibrated for zero-current output point and sensitivity, each of these devices produces a linear

analog output that is proportional to the current flowing directly through the IC’s leadframe. Inside the IC package, the

magnetic field generated by the current flow is sensed differentially by two sets of Hall plates. This set up combats the effect

of external fields and crosstalk. The close proximity of the Hall plates with the current conductor results in superior signal

integrity, but at the same time a strong insulation layer separates the primary and secondary sides. The devices exhibit

strong robustness against external fields, something that will get ever more critical as the density of power electronics

designs increases. The key differentiator though is the virtually non-existent magnetic hysteresis that is witnessed, which

results from the design not needing a ferromagnetic concentrator. A -40°C to 125°C temperature range is supported, and

the sensors comply with IEC-60950 (furthermore the SO16 packaged devices adhere to UL1577).

Thanks to their high speed and compact size, key applications for MLX91210 ICs that support both DC and AC current

measurements, include precision current flow monitoring in power distribution units of server farms and data centers,

power supplies and converters, demand response load control, household/appliance smart metering and energy

intelligence, solar power converters and combiner boxes, and electrical motor control in general.

“There is greater impetus for compact current/power monitoring in both domestic and industrial environments, with new

legislative measures being established for higher efficiencies as well as financial concerns due to escalating energy costs,”

explains Bruno Boury, Product Line Manager for Magnetic Sensing at Melexis. “These new high speed devices are raising


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