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The Evaluation Boards – DC/DC & AC/DC (Off-Line) SMPS, are designed to evaluate power supply solutions such as Half-Bridge and Forward Converters. This evaluation board is suitable for many general purpose applications from customers who require a reliable and high-power, low-cost solution. The evaluation board contains a collection of components required to build a circuit design including the following stages: Input, inrush current protection, current transformers, signal conditioning, voltage and power ratings, output regulation, and protection circuits.

The main components on the evaluation board include a high-frequency power supply to generate the initial input power, a controller IC to control the power supply, a power inductor, and several rectifiers and filtering components. The use of AC or DC power input can be selected by the user on the board. The Input is then regulated by the controller, which provides a stable voltage to the switching circuit. The switching circuit includes a high-efficiency Half-Bridge or Forward Converter, which step down the input voltage to a suitable output voltage. An inductor is placed between the input voltage and the output voltage to prevent any current from the output voltage returning to the input voltage.

The voltage regulation of the output voltage is managed by an internal control loop in the controller IC. This controller IC works by sensing the output voltage and comparing it with an internal reference voltage. Based on the comparison, it will generate a control signal to the gate drivers to adjust the switching frequency to increase or decrease the duty cycle for output voltage regulation. The controller IC can also detect any over-voltage or over-current conditions, and it will shut down the IC to protect the device from damage.

The protection circuit on the board prevents the power switch from exceeding a certain temperature. This prevents the unit from producing excessive heat, which can cause damage to the other components in the system. The board also includes a current transformer, which is used for measuring the current flowing in the circuit. This provides feedback to the controller to accurately adjust the switching frequency and output voltage.

The Evaluation Boards – DC/DC & AC/DC (Off-Line) SMPS are designed to operate in the range of 13 watts up to 450 watts. The output voltage and current ratings, are customizable for a particular application. The board also includes two test points which are used for testing various conditions of the circuit. Other features of the board include an ON/OFF switch, and a voltage regulator to adjust the output voltage to suit the requirements of the application.

The Evaluation Boards – DC/DC & AC/DC (Off-Line) SMPS are widely used in a range of applications from military to consumer products, and from industrial to commercial products. They are cost-effective, reliable, and efficient solutions for customers looking to build high-performance, low-cost power supplies.

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