LM5041EVAL

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The LM5041EVAL is an off-line evaluation board that provides customers with an easy and convenient way to evaluate the LM5041 buck regulator from Texas Instruments. It offers a 3-phase input voltage range of 25 to 75VAC, so customers can quickly simulate actual system operation. The evaluation board is accompanied by an Evaluation GUI software tool, which allows users to quickly set up and configure the board\'s loads, inputs and outputs. This paper will discuss the application field and working principle of the LM5041EVAL.

Application Field

The LM5041EVAL board is designed as a 3-phase, switch-mode power supply (SMPS) regulator for offline, transient-term power conversion applications. It is particularly suitable for industrial, telecommunications, and energy storage applications where efficiency, high power density, and low EMI are important design requirements. It can support a wide range of input and output voltages and provides current and temperature sensing through its monitoring pins. Other features include active voltage scaling to maintain accurate regulation over line and load changes, over-temperature protection (OTP), over-current protection (OCP), and soft start.

Working Principle

The LM5041EVAL works with the TI LM5041B buck regulator, which consists of two main sections, a phase lock loop (PLL) section and a buck section. The PLL section is used to control the switch on time of the buck section. It senses the voltage across an inductor, which is proportional to the output current. This voltage is compared with a voltage reference and the difference is used to generate a control signal for the buck section. The buck section works as a current source to achieve a regulated output voltage by switching on and off. The on/off ratio of this buck section can be adjusted by adjusting the resistance value on the front panel, which allows the user to control the nominal output voltage.

The LM5041EVAL board can be used to monitor and adjust the different operating parameters of the LM5041B buck regulator, such as input voltage, output voltage, current limit, and switching frequency. It also provides the user with an easy to use graphical user interface (GUI) to setup and configure the board\'s loads, inputs and outputs. In addition, the Evaluation GUI software tool provides a convenient way for users to quickly compare the performance differences between different operating conditions.

In summary, the LM5041EVAL is a versatile evaluation board designed to provide customers with an easy and convenient way to evaluate the LM5041 buck regulator from Texas Instruments. It has a wide input voltage range, current and temperature sensing, active voltage scaling, over-temperature protection (OTP), over-current protection (OCP), and soft start features, making it suitable for a variety of industrial, telecommunications, and energy storage applications. Moreover, the evaluation board is accompanied by an Evaluation GUI software tool, which allows users to quickly set up and configure the board\'s loads, inputs and outputs.

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