STEVAL-CBL015V1

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The STEVAL-CBL015V1 is a board from STMicroelectronics dedicated to evaluating the STSW-CBL015V1 Offline Universal Adapter Reference Design. This design can be used to build a power adapter that is compatible with a wide variety of applications, from low-power devices such as smartphones and tablets to large appliances. It is designed to meet the requirements of Level VI energy efficiency, as well as those of EMC and safety regulations for products sold worldwide.

The board can be used to test and evaluate the STM32-based reference design and understand which components are necessary for a successful implementation. It includes a selection of components, such as a controller and MOSFET, that are necessary for a compliant solution and feature a wide operating input range. Furthermore, the circuit includes EMC enhancements and several protections to ensure safe operation. Notably, the board includes a USB Type-C connector that is compliant with USB PD Power Rules.

The STEVAL-CBL015V1 belongs to the Evaluation Boards - DC/DC & AC/DC (Off-Line) SMPS are boards which are used to evaluate offline power converters. As its name implies, the board is dedicated to the evaluation of AC/DC (alternating current to direct current conversion) and DC/DC (direct current to direct current conversion) converters. Offline power converters convert incoming AC or DC power into the voltage and current profile required by the application or device. Furthermore, these converters help to reduce the system power consumption by contracting the power supply to match the load characteristics, as well as optimizing the device power quality.

The working principle of the STEVAL-CBL015V1 is the same as all other off-line power converter evaluation boards. It works by converting the incoming AC or DC power to the desired voltage and current level required by the application. In order to do this, the board uses components such as a PFC (power factor correction) IC, an inrush current limiter, a MOSFET switch, an inductor, a capacitor, and a control IC. The PFC IC helps to convert the incoming alternating current into a DC signal, while the control IC is responsible for controlling the MOSFET switch according to the load. The inductor and capacitors store and provide energy to meet the load power requirements, while the inrush current limiter prevents sudden surges in the power being supplied to the circuit.

The STEVAL-CBL015V1 is an excellent evaluation board for testing and evaluating the STSW-CBL015V1 Offline Universal Adapter Reference Design. This board is suitable for a wide range of applications, from low-power devices such as smartphones and tablets to large appliances. Furthermore, this board is compliant with a variety of regulations in terms of energy efficiency and safety, and includes a selection of components, such as a controller and MOSFET, as well as features such as EMC enhancements and protections, that are necessary for a compliant solution.

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