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MLX91216 Scheda tecnica(PDF) 1 Page - Melexis Microelectronic Systems |
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MLX91216 Scheda tecnica(HTML) 1 Page - Melexis Microelectronic Systems |
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1 / 14 page  MLX91216 High Speed Current Sensor IC Datasheet Doc.№ 390109121603 Page 1 of 14 Rev.003 / 15-Jan-2021 1. Features and Benefits IMC-Hall® Technology High Field, Very High Field and Extra High Field variants End-of-line programmable sensor Selectable analog ratiometric output Programmable sensitivity from ±20 to ±350mV/mT Measurement range up to 90 mT Wideband sensing: DC to 250kHz Very fast response time (2µs) High linearity down to ±0.2% full scale Very low thermal drift Offset drift (<5mV) Sensitivity drift (<1%) Programmable output clamping levels Broken wire detection and diagnostics AEC-Q100 – Grade 0 Automotive Qualified RoHS compliant SOIC-8 package MSL-3 2. Application Examples High Voltage Traction Motor Inverter 48V Boost Recuperation Inverter DCDC Converter Smart Battery Junction Boxes Smart Fuse Overcurrent Detection Figure 1. Typical IMC-Hall® Current Sensing Application 3. Description The MLX91216 is a monolithic Hall-effect sensor utilizing the IMC-Hall® technology. The sensor provides an analog 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. Figure 2. General Block Diagram |
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