United Kingdom
Description
The MLX91216 is a monolithic Hall-effect sensor utilizing the IMC-Hall® technology. The sensor provides an analogue output voltage proportional to the applied magnetic flux density parallel to the IC surface.
The transfer characteristic of the MLX91216 is factory trimmed over temperature and is programmable (offset, sensitivity, clamping, filtering) during end-of-line customer calibration. The output clamping levels and on-chip filtering are also programmable as a function of application needs. With the 250kHz bandwidth and fast response time, it is particularly adapted for high-speed applications such as inverters and converters where fast response time due to fast switching is required.
In a typical current sensing application, the sensor is used in combination with a U-shaped shield which facilitates the mechanical assembly of the current sensor over traditional ferromagnetic cores. This shield is recommended to be laminated for high bandwidth applications. The MLX91216 can then be mounted over the bus bar and separated from it by the PCB. As the shield does not serve the primary purpose of concentration, it can be made smaller and lighter than ferromagnetic cores without losing signal thanks to the integrated magnetic concentrator (IMC) depicted also in Figure 1. Typical IMC-Hall® Current Sensing Application. As a result, dense power electronics can be achieved enabling system savings and surface mount assembly.
Application Examples
- High Voltage Traction Motor Inverter
- 48V Boost Recuperation Inverter
- DC-DC Converter
- Smart Battery Junction Boxes
- Smart Fuse Overcurrent Detection
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