DC093A

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DC093A is a versatile Evaluation board, it is an off-line switched mode power supply (SMPS) in DC/DC & AC/DC configuration. The board is comprised of a standard building-block of components and is suitable for both prototyping and product development.

The DC093A board has been designed as a 360 W DC-20 Vdc power supply. It is intended for use in a wide range applications, like printers, computer systems and air conditioning. Additionally, it can also be used for supply current for inverters and power supplies.

The board features a hybrid topology which combines a buck-boost controller with an isolated 36Vdc/20Vdc secondary topology. This combination gives the board a high efficiency point at light load, a low output ripple and a stabilization at low or high line fluctuations. As such it offers a variety of output voltage regulation.

The working principle of DC093A is based on a primary-side controlled buck-boost topology. It includes an input from the mains, an active power factor correction (PFC) circuit, an active clamping rectifier and two front-end PWM stages. The active PFC boost controller, which is designed for high voltage operation, is powered directly from the mains. The active clamping rectifier allows the user to set the desired output current or maximum output voltage value.

The buck-boost controller maintains the output voltage by adjusting the power delivered to the output from the PFC stage. The controller adjusts the switching frequency according to the load conditions, thereby providing a current-mode control scheme. The PWM stages enable a fast, precise control of the output voltage and the power delivered to the load.

The DC093A board features a secondary topology comprising two parallel connected dc-dc converters, allowing both single rail and dual rail operation. It also includes integrated isolation layers, allowing the board to regulate and monitor the output voltage or current even in the absence of an external load.

The board also features a wide range of protection features, like power limiting, current limiting, over voltage, over current, short circuit, thermal overload and thermal protection. All these features make the DC093A suitable for a wide range of applications.

In conclusion, the DC093A board is an excellent choice for high performance, cost-effective and reliable power solutions for a wide range of applications. With its versatile topology and cutting-edge protection features, it is an ideal solution for any problem related to power supplies.

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