DC1989A-C

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The DC 1989A-C Evaluation Board from Microchip Technology is a robust, user-friendly evaluation platform for a wide array of general-purpose and high-power DC/DC switching regulators and converters. It is suitable for evaluating the performance and power characteristics of various non-isolated and isolated switched-mode power supplies (SMPSs) over a wide range of input and output voltages.

As the name suggests, DC 1989A-C boards are designed for evaluating current control and power switching applications. It provides the necessary tools for the evaluation of different combinations of input voltages, output currents, operating loop parameters, and power switch configurations. The DC 1989A-C board has many features which enable it to function as a benchtop DC/DC and AC/DC (off-line) SMPS evaluation platform that can be configured for almost any off-line SMPS application.

The DC 1989A-C board is composed of two main components: a board base and an external power source. The board base contains four separate circuits, three of which are dedicated to the evaluation of DC/DC and AC/DC SMPSs, while the fourth is designed for other non-SMPS power applications. The evaluation board consists of loop components (passive and active) and a 12V nominal DC input power source. The base board provides user-friendly connections and comprehensive power control features.

The DC 1989A-C evaluation board has several application fields. It can be used for the evaluation of voltage regulators, such as the MIC2912, MIC2920, LM2903, and MIC2931. It is also suitable for the evaluation of voltage and current converters, such as the MIC2920N and LM2903 from Microchip. It can be configured to work with off-line, point-of load (POL) and isolated non-isolated switch-mode power supplies. Furthermore, the DC-1989A-C board has a comprehensive set of tools for the evaluation of current control and power switching parameters.

The DC-1989A-C board is based on the well-known three-step approach to obtain the best efficiency when designing power converters; the current-mode controller, the power switch and the associated compensation components. It has an integrated voltage feedback loop with both resistive and transconductance compensation allowing rapid evaluation of various topologies and their performance. Additionally, it allows for the user to modify the catch diode and EMI filter components to optimize the overall system performance.

The DC-1989A-C board provides a flexible yet user-friendly platform for the evaluation of various DC/DC and AC/DC (off-line) SMPS applications. Its comprehensive set of features and high-power handling capabilities makes it an ideal choice for product development and prototyping, while its affordability makes it suitable for budget-friendly projects. It is also ideal for educational and hobbyist purposes. If you are looking for an efficient and cost-effective way to evaluate the performance of various switched-mode power supplies, the DC-1989A-C evaluation board from Microchip is a great choice.

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