LM2676S-ADJEVM

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The LM2676S-ADJEVM is an Evaluation Board from Texas Instruments, which offers a complete solution to evaluate the efficiency and performance of the LM2676S-ADJ "Simple Switcher". This Power Management IC is primarily designed for a wide range of offline or isolated Switch Mode Voltage Regulators or DC/DC (constant voltage and constant current) converters. It is perfect for applications requiring low output voltages and operating from an input voltage range of up to 25V.

The LM2676S-ADJEVM is a compact and versatile evaluation board with an output of only 3A/5A. The board has an adjustable output voltage indicator that allows the user to select the desired output voltage. It also includes a built-in test and evaluation feature, allowing users to quickly check power performance, detect any potential issues and reduce design time. This make the LM2676S-ADJEVM an ideal evaluation board for evaluating in a variety of power supply applications.

The main components of the board are as follows: the hot swap MOSFET, LM2676S-ADJ Simple Switcher, boost inductor, compensation network and EMI filter network. During operation, the LM2676S-ADJ regulates the output voltage based on the voltage level in the compensation network. When the output voltage falls below the set level, the LM2676S-ADJ increases the switching frequency and decreases the duty cycle. When the output voltage exceeds the set level, the LM2676S-ADJ decreases the switching frequency and increases the duty cycle.

The Hot Swap MOSFET is used to limit the output current and minimize switching losses when the output voltage is to be adjusted. The output voltage is monitored via the voltage indicator. The programmable current limit circuit ensures that the maximum available output current is limited to 3A/5A in order to protect the load when the system is not stable. The EMI filter network in the module also facilitates the reduction of EMI by providing good electrical shielding. Lastly, the LM2676S-ADJEVM has a built in overvoltage protection. It will shut down the output when the output voltage is above a pre-set threshold.

Overall, the LM2676S-ADJEVM Evaluation Board is an effective solution for testing and evaluating DC/DC and AC/DC Off-Line SMPS applications. Its adjustable output voltage feature, built-in test and evaluation feature, and overvoltage protection make it an ideal tool for evaluating the performance of the simple switcher in various applications. Additionally, Texas Instruments provides a rich set of support documents, application notes, and customer service for the LM2676S-ADJEVM, making for a truly robust and useful testing tool.

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