Recently, NOVOSENSE launched the new NSM203x series linear Hall effect current sensor chip, which provides a high-precision solution for the large-range current detection based on the magnetic focusing ring. It can be widely used in the phase current detection of the electric drive system of electric vehicles and the large current detection of current modules such as industrial motor control and photovoltaic inverter in industrial systems.
The NSM203x product family includes five product models, namely NSM2031, NSM2032, NSM2033, NSM2034 and NSM2035. The NSM203x series can fully cover different system requirements in various application scenarios, taking into account the multiple dimensions of overcurrent protection output, reference voltage output, memory type (single programmable OTP, repeatable programmable MTP), and packaging form. All products have vehicle specifications and tool specifications, of which the vehicle specifications meet the reliability requirements of AEC-Q100 Grade 0, and can be competent for work under the harsh environment of - 40~150 ℃.
High precision standard, high temperature stability
NSM203x series has achieved industry-leading high-precision and low-temperature drift performance. The sensitivity error of some models in the full temperature range is less than ± 1%, the zero error is less than ± 5mV, and the nonlinearity error is less than ± 0.2%.
High bandwidth, fast response
In order to support the low delay, low distortion current sampling requirements and fast overcurrent protection of the electronic control system, the design patent of the signal conditioning circuit of the nano-core micro can ensure the low noise while realizing the industry-leading high bandwidth and low response time. NSM203x has 240kHz bandwidth/2.2 respectively μ S response time, 400kHz bandwidth/1.5 μ S Response time model, overcurrent protection time is as fast as 1.5 μ s. It greatly reduces the risk of serious injury caused by system overload, short circuit and other abnormal conditions.
Flexible model selection, supporting low-voltage programming
NSM203x series supports proportional output or fixed output. The output signal (sensitivity, zero voltage) of proportional output version changes proportionally with the change of power supply voltage; The version output of fixed output does not change with the change of supply voltage, which improves the output stability in the application scenario of power disturbance.
This series of products supports a wide sensitivity programming range, 0.4~30 mV/G, corresponding to the magnetic induction intensity range of ± 150~± 4500 Gauss, which greatly reduces the difficulty of users' magnetic core design and improves the convenience of competing products' substitution.
The full range of NSM203x products support 3.3V and 5V versions to support control systems of different voltage levels. At the same time, the product series supports low-voltage programming, and uses the patented single-line communication protocol (OWI protocol) of Nanocore Micro to write OTP or MTP under the condition of 5V power supply, which does not require high voltage and reduces the impact on the peripheral components of the common power supply on the board.
Multiple packaging forms, strong compatibility
TO94 (X) package is divided into thick package (1.55mm) and thin package (1.00mm). Each package can provide multiple pin bending forms, including L-shaped bending and V-shaped bending of different heights. It supports PCB surface mounting and different structural designs of customers. It is an ideal choice for current sensing module manufacturers and integrated electric drive system design.
Various diagnostic forms, industry-leading reliability design
Some NSM203x product models support over-voltage protection, under-voltage protection and open-circuit diagnosis. When the above system abnormalities occur, the product output changes to a high-impedance state. Customers can achieve the purpose of high or low diagnosis by cooperating with external pull-up resistance or pull-down resistance to achieve higher system-level functional safety.
This product series has industry-leading ESD performance, with HBM mode up to ± 8kV and CDM mode up to ± 2kV, which improves the robustness in the production and manufacturing of components and the application of end customers.
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