DC1856A-B

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DC1856A-B evaluation board is a powerful development platform for off-line switching power converter technology. The board is composed of the main integrated circuit LTC1856, which is a high-performance analog and mixed signal controller for switching power converter. DC1856A-B evaluation board provides hardware, firmware and GUI to evaluate the performance and functionality of LTC1856.

DC1856A-B application field mainly includes the off-line switch mode power supplies (SMPS) used in the industrial, commercial and consumer application. It is suitable for the applications like LED drivers, solar micro inverter, AC/DC power supplies, DC/DC converters, etc. The evaluation boards help to enhance knowledge, quickly experiment and evaluate ideas to reduce the design time. It allows the designers to quickly perform validation and test their power supplies with the flexibility to change or modify the parameters.

Working Principle of DC1856A-B Evaluation Board: The LTC1856 is a low component count, integrated controller for synchronous step-down SMPS. This chip is used in the DC1856A-B evaluation board to implement the DC-DC buck converter. When the DC input voltage is applied to the VIN connector, the voltage is sensed by the controller which allows it to regulate the output voltage. The output voltage is controlled by an analog or PWM control loop. The LTC1856 uses an internal oscillator to modulate the duty cycle of the PWM signal, and adjusts the duty cycle as per changes in the input voltage.

The LTC1856 automatically senses the output voltage and adjusts the gate drive current accordingly. This process also includes the feedback mechanism to compensate the switching losses as the load current changes. The chip uses the MOSFET’s RDS(ON) to calculate the switching losses and provides accurate gate drive current to reduce the switching losses. Furthermore, it provides protection features to avoid damage done by overloading, overheating, and fault conditions.

Conclusion: DC1856A-B evaluation board is an efficient platform for the design and development of AC/DC and DC/DC switching power converter. The evaluation board is powered by the LTC1856 chips, which allows to regulate the output voltage and ensures efficient operation of the switch mode power supplies. Thus, DC1856A-B evaluation board provides quick result, reduce the design time and enhance the knowledge of the system.

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