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

The STEVAL-ISA055V1 is an evaluation board used to assess non-isolated flyback topologies. It is specifically designed to evaluate primary-side regulation, linear post-regulation and PFC converters. The board is equipped with a wide range of settings which can be adjusted through jumpers, potentiometers, and other external circuitry to simulate different operating conditions. This allows the user to accurately assess the performance of the proposed components and applications.

The board consists of a full bridge rectifier and a non-isolated flyback converter. The bridge rectifier includes two rectification diodes and a bridge rectifier capacitor. The converter has two separate windings: an input transformer winding, and an output transformer winding. The input transformer winding has a high-current capability and can provide input power up to 160W. The output transformer winding provides feedback to the output stage.

The board also includes several electronic components which allow the user to adjust the operating conditions. These include a controller IC, a safety switch, a power switch, a current sense resistor, a thermal sensor, and jumpers. The controller IC integrates all the functions necessary for the converter operation, such as over-voltage protection, over-current protection, and thermal protection. The safety switch is connected between the input transformer and the output transformer, while the power switch is connected between the output transformer and the output stage. The current sense resistor is connected in series with the power switch and provides current feedback to the controller IC. Finally, the thermal sensor provides feedback to the controller IC for over-temperature protection.

The board also includes several external components which can be connected to the board through jumpers. These include feedback resistors, fault protection diodes, snubber components, and inductors. The feedback resistors are connected between the output stage and the controller IC and provide voltage information to the controller IC. The fault protection diodes protect the components from the supply voltage. The snubber components reduce voltage spikes. Finally, the inductors are used to smoothen the output voltage and reduce the output ripple.

The STEVAL-ISA055V1 application is suitable for various types of applications which require fast dynamic response, high reliability, high efficiency, and high power density. Some typical applications include lighting, medical, and consumer electronics. Additionally, the board has been designed to meet the needs of many safety standards, such as IEC and VDE.

In conclusion, the STEVAL-ISA055V1 is a useful and versatile evaluation board for assessing non-isolated flyback topologies. It is equipped with a variety of components and jumpers, allowing the user to simulate different operating conditions and assess the performance of the components. The board is also designed to meet the needs of several safety standards, making it suitable for various applications such as lighting, medical and consumer electronics.