MIKROE-491

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The MIKROE-491 is a powerful evaluation board for DC/DC and AC/DC (Off-Line) SMPS (switched-mode power supply) control applications. This versatile board is used to develop, simulate, and evaluate various types of switch-mode power supplies. It is designed to provide a low cost, low component count, high performance solution for researching and developing switch-mode power supplies.

The working principle of the MIKROE-491 board is based on the use of a single semi-integrated controller which acts as a PWM (pulse-width modulation) pulse-shaping device providing the necessary timing signals for the other main power semiconductor components, such as MOSFETs (metal-oxide-semiconductor field-effect transistors) and IGBTs (insulated-gate bipolar transistors). The application field of the MIKROE-491 board is widely varied. It can be used for the design and evaluation of power supplies used in telecommunications power applications, motor controls, lighting, and switch-mode power supplies for adapters and consumer electronics.

The board utilizes a Smart Power Stage module as the main switching device which provides both high performance and cost benefits. The output of the board is capable of driving either a single inductor or dual inductors with integrated MOSFETs and bootstrap circuits. The board also features an adjustable output voltage range of 0.25 V to 5 V and an adjustable switching frequency range of 100 kHz to 1 MHz. This allows the board to be used for many different applications, such as flyback converters, buck converters, boost converters, isolated converters, phase shift full bridge, and single phase AC/DC converters.

The output characteristics of the MIKROE-491 board are adjustable by the user. This is done via the on-board potentiometer and digital potentiometer. The user can set the output voltage, output current, and switching frequency. Other on-board features include an LCD display, LED indicators, and a temperature sensor. This allows the user to monitor the board in real-time.

The MIKROE-491 application field and working principle make it an ideal solution for evaluating switch-mode power supplies. Its wide range of adjustable parameters allow for easy evaluation and testing of a variety of applications. This makes it an invaluable tool for power supply research and development.

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