STEVAL-ISA107V1

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Evaluation boards are typically designed to contain a single component or device and provide the user with a means of entering test parameters and 2 or more outputs. STEVAL-ISA107V1 is an evaluation board of DC/DC and AC/DC (off-line) SMPS (Switch Mode Power Supplie), designed to provide a variety of adjustable parameters to evaluate the performance characteristics of various DC/DC or AC/DC power supplies.

The STEVAL-ISA107V1 board is designed with 140 W of power, supporting input voltages ranging from 50 V to 400 V, and resolution as 0.1 V increments, making it suitable for high power applications and/or wide input voltage ranges. The board utilizes an offline SMPS topology, which helps improve the efficiency of devices being tested up to 89%.

The STEVAL-ISA107V1 has a variety of output parameters that can be adjusted through the keypad and LCD integrated in the board. These include output voltage and current, start-up time, and discontinuous conduction mode (DCM) parameters such as peak inductor current, frequency and periodic cycles. The four operational modes of the board which can be selected from the menu screen are constant voltage mode (CV), constant current mode (CC), power limiting mode (PL) and DCM. The board can also be programmed with different types of waveforms which can be used to evaluate more advanced applications.

The STEVAL-ISA107V1 consists of two main elements, the main controller and the power stage. The main controller handles the settings, adjustments, signals, and stimuli needed for the evaluation board to function correctly. It includes an 8-bit microcontroller, an LCD, and a capacitive touch keypad, all of which are used to control the board and set different parameters. The second element is the power stage, which contains the power elements used to convert the input into the desired output. These include a switching FET, high side rectifier, inductor, output filtering capacitor, and an opto-coupler for feedback control of the power stage, and an EMI filter.

The STEVAL-ISA107V1 is a highly integrated and versatile evaluation board, which can be used in a wide range of applications, from telecom and industrial to consumer and automotive applications. Its robust construction and wide input voltage capabilities make it suitable for applications requiring high power and wide input voltage range. Thanks to its four operating modes, adjustable output parameters and custom waveforms, users can quickly and effectively evaluate the performance characteristics of their device. The board also provides power-saving features, which can translate into potential cost savings.

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