LM20242EVAL

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Evaluation Boards - DC/DC & AC/DC (Off-Line) SMPS

The LM20242Eval evaluation board is a comprehensive platform for designing, testing, and verifying isolated DC/DC and AC/DC (off-line) power systems (Power System). The board provides basic elements for understanding and working with switch-mode power supplies, and is aimed at both novice and experienced Power System designers. With its high degree of modularity the LM20242Eval can be adapted to many Power System design requirements.

Functional Design Overview

The LM20242Eval board has been designed to simulate the complete range of power system designs and configurations including single Phase, multiple Phase, and boost topologies. It supports a wide range of components, including power semiconductors, AC sources, rectifiers, inductors, capacitors, etc. To enable the user to evaluate the performance of their design, there is also a comprehensive set of measurement and test features, such as an oscilloscope (or digital multimeter), current and voltage meters, and voltage regulators.The board has been designed to be flexible and highly configurable. It provides a range of external connections, as well as a set of internal circuit elements and control features. For example, the board can be configured to operate with a single-phase AC input, or multiple-phase AC input, or with a boost circuit design. It can also provide circuit parameters such as current and voltage regulation, oscillator frequency selection, and slow turn-on and turn-off control, etc. A selection of power output terminals includes a banana-jack, a spring-loaded terminal block and a pair of size 2 mounting posts.

Power System Structure

The boarded power system comprises of several blocks: AC Input, Rectifiers, Regulator, Power Stage, and Power Output. The AC Input supplies power to the rectifiers, which convert the sinusoidal AC power into DC power. The regulator, which is the main component of the power system, converts the DC power from the rectifiers into a regulated voltage, which is then converted to the desired output voltage by the power stage. Finally, the power output is delivered to the user\'s load.

On-Board Components and Test Features

The board provides several components and test features that enable the user to evaluate the performance of their power system. These include a voltage regulator, current and voltage meters, oscilloscope/digital multimeter, low-side driver switch, and a banana-jack power output terminal. The voltage regulator provides adjustable output voltage levels for the power stages, while the current and voltage meters enable the user to monitor the power system\'s performance. The oscilloscope/digital multimeter can be used to analyze and measure the current and voltage signals, while the low-side driver switch enables the user to reset the system or shut down in case of an emergency. Finally, the banana-jack terminal provides an easy way to connect the power system output to external loads.

Design Flexibility and Modularity

The LM20242Eval board is designed to be highly flexible and modular. It supports a wide range of components, including power semiconductors, AC sources, rectifiers, inductors, capacitors, etc. It also features circuit parameters such as current and voltage regulation, oscillator frequency selection, and slow turn-on and turn-off control for better system control and design flexibility. Additionally, the board is also expandable, allowing the user to add extra components to extend the board\'s capabilities.

Power System Safety Features

The LM20242Eval board comes with several integrated safety features to ensure the safety of the user. These features include a power failure detection circuit, which shuts down the board when the voltage drops below a certain level, and an over-current protection circuit, which reduces the output current when the board is overloaded to prevent it from being damaged. Additionally, there is also a current and voltage limiting circuit which ensures that the board does not exceed the maximum current and voltage limits set by the user.

Conclusion

The LM20242Eval evaluation board is a comprehensive platform for designing, testing, and verifying isolated DC/DC and AC/DC (off-line) Power Systems. It provides a range of components and test features that enable the user to accurately evaluate their designs, along with a high degree of flexibility and modularity. Additionally, the board is also designed with several safety features to ensure the safety of the user during operation. With its comprehensive design and features, the LM20242Eval board is suitable for both novice and experienced Power System designers.

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