On September 20, 2024, Tyson Delo, Belgium - Melexis, a global microelectronics engineering company, announced that its Hall effect dual latch product line has welcomed a new member, MLX92253. This Hall sensor chip provides two completely independent signal channels to minimize jitter and maintain a 90 ° phase shift at all times, without being affected by magnetic pole distance. This feature facilitates precise calculation of speed and direction by electronic control units (ECUs), and enables easy cross platform transmission. This integrated solution provides a cost-effective choice for DC motors and encoders for a wide range of embedded applications covering automotive, consumer electronics, and industrial sectors.

In the field of mobile travel, the deep integration of precise directional feedback with linear velocity, rotational velocity, or angular position sensing technology has become the key to ensuring stable operation and improving safety performance of numerous systems. In the field of passenger cars, directional feedback technology is used for monitoring and regulating electric systems, such as precise control of window lifters, seat adjustment motors, and electric tailgates. For electric bicycles, directional feedback plays an important role in detecting cycling step frequency and instantly activating electric pedal assistance. In addition, in smart home and industrial scenarios, such as the automation operation of smart blinds and ventilation systems, motor feedback also plays an indispensable role, ensuring the safe operation and precise operation of equipment.

Currently, engineers generally face two major challenges for stepper and DC motor applications that adopt dual latch schemes: on the one hand, they may need to integrate two separate chips, increasing design complexity; On the other hand, relying on chips that are sensitive to magnetic pole distance may lead to highly customized demands and increased costs. MLX92253 provides a solution to this problem with its unique advantages. The device is equipped with two pre programmed Hall sensors (Z-axis and X-axis), which not only provide two independent signal tracks, but also adopt a shared magnetic core design. This innovative design ensures that the dual speed outputs always maintain a 90 ° phase shift (orthogonal relationship), thereby eliminating dependence on magnetic pole distance. In addition, MLX92253 also has low magnetic threshold characteristics, unlocking more design possibilities for engineers - they can use smaller and more cost-effective magnetic components, or increase the air gap to accommodate looser assembly tolerances, effectively reducing assembly difficulties.

MLX92253 can quickly provide precise feedback, with excellent characteristics of low latency and low jitter. Compared to traditional solutions, it achieves significant improvements in reliability. The chopping frequency of this device is as high as 500kHz, and the operating voltage range is 2.7V to 5.5V, perfectly adapting to the requirements of low-power embedded systems. MLX92253 also has a wide operating temperature range, from -40 ℃ to 150 ℃, ensuring stable operation even in extreme environments. It is worth mentioning that the device provides output state feedback during the startup phase, which allows the two outputs to be converted into inputs through the startup feedback mechanism, capturing and recording the state information of MLX92253 before power failure, ensuring that no important actions are missed.

The launch of MLX92253 not only sets a new standard for low-cost DC motor and encoder applications, but also contributes to the global goal of sustainable development with its excellent performance and cost-effectiveness, "said Minko Daskalov, Product Line Manager of Mailai Xin." We believe that this chip will lead DC motor applications into a new stage of development

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