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NX2420CMTR Application Field and Working Principle

The NX2420CMTR (Continuous Mode Hybrid Step-Down DC/DC Controller) is a high performance DC/DC converter with advanced output current tracking capability. It is designed to provide maximum output efficiency control of output current along with full circuit protection. It provides a wide range of operation in linear mode, buck mode, and boost mode, enabling users to optimize the power delivery efficiency and performance.NX2420CMTR is ideal for applications requiring high performance requirements such as battery power management, automotive power system, and fast charging. The controller features an optimized digital control loop and advanced software algorithms to ensure precise output current tracking and fast response.In terms of application field, the NX2420CMTR is used in a variety of applications such as AC/DC rectification, solar cell, fuel cell, battery charging, portable devices, and embedded systems. The HV-U/HV-L output voltage can be as low as 0.6V and as high as 17V.In terms of working principle, the NX2420CMTR starts and stops the switching in the appropriate moment according to the load conditions. The precise sense voltage regulation, maximum duty cycle control, and soft-start are managed by the high precision feedback loop. The on-chip over-current and thermal shutdown protect the device from any potential damage.The high-speed peak current mode control architecture of the controller provides excellent load transient response as well as stabilization of the output voltage. The output voltage of the IC is regulated by the on-chip Internalreference.NX2420CMTR provides an integrated PWM control circuit with an adjustable current limit. With the supplied current control pin, it can be programmed to provide an adjustable current limit from 100mA to 1.5A. The controller also provides the function of external clock input and the operating frequency can be up to 3MHz for optimized efficiency and performance.In summary, the NX2420CMTR provides a high performance, integrated DC/DC controller solution for a wide range of applications. It features a high precision feedback loop and an integrated PWM control circuit for excellent output voltage regulation and fast transient response. The device also features an adjustable current limit from 100mA to 1.5A and a maximum operating frequency of 3MHz, making it an ideal choice for energy efficient and high performance application.

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