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Evaluation Boards – DC/DC & AC/DC (Off-Line) SMPS allow a system designer to quickly evaluate and confirm the performance of their system with efficient and reliable power conversion. With short set up times and process steps, the DC/DC & AC/DC (Off-Line) SMPS is an easy way to power multiple application fields. This article will describe the application fields, working principles, and evaluation boards available for DC/DC and AC/DC (Off-Line) SMPS.

DC/DC converters are used to provide regulated power, often from a higher voltage battery pack, to a system needing a lower voltage. This method of power conversion can be used in a variety of application fields including, automotive and industrial systems, portable devices, charging systems, etc. The working principle behind a DC/DC converter is not particularly complex. By rapidly switching the transistors to create a pulse width modulation (PWM) signal to the output filter, the output voltage can be regulated simply at a constant rate. Evaluation boards for DC/DC converters typically include four components: the power stage, the controller, the feedback network, and the test board. The power stage contains the transistors, the inductors, and the other passive components (capacitors etc.) used in the power conversion circuitry. The controller is made up of two parts, the input switch and the output filter. It processes the PWM signal and outputs an appropriate voltage and current to the load. The feedback network is used to sense the output voltage and/or current and send information back to the controller to adjust the power input-output balance. Finally, the test board is equipped with a wide variety of connectors, allowing users to quickly evaluate the performance of their system.

AC/DC converters are typically used in consumer devices such as hand-held gaming devices or smartphone charging systems. The working principles of an AC/DC converter involve rapidly alternating the switching of high and low side transistors to produce a smooth output voltage from an alternating current input. As with DC/DC converters, evaluation boards for an AC/(Off-Line) SMPS typically include components that are integrated in the test board, including the power stage, the controller, the feedback network, and the test board. Depending on the specific type of AC/DC converter, the components used in the power stage can vary. For example, bridge rectifiers are used on converters for switching AC line inputs while tap off capacitors are used with transformers that convert the AC input to a lower voltage. The controller processes the voltage and regulates the output according to the input voltage. The feedback network sends information back to the controller to adjust the power input and output balance. Finally, the test board is equipped with a wide variety of connectors, allowing users to quickly evaluate the performance of their system.

In conclusion, DC/DC and AC/DC (Off-Line) SMPS Evaluation Boards are a great way to quickly evaluate the performance of a system that uses efficient and reliable power conversion. With short set-up times and process-steps, the evaluation boards provide an easy way to power multiple application fields. The working principles behind DC/DC and AC/DC (Off-Line) SMPS involve rapidly switching transistors to create a PWM signal for the output filter, and then sending information back to the controller to adjust the power input and output balance. By equipping the boards with a wide variety of connectors, users are able to quickly and accurately test the performance of their system.

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