DC2569A

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

DC-DC as well as AC-DC off-line SMPS application fields and working principles are becoming increasingly important as more and more devices and machines are being powered and operated with renewable and efficient sources of energy. DC-DC and AC-DC off-line SMPS are used to convert different types of energy sources into a stable and tailored output voltage suitable for powering the required device or machine.

The DC2569A is a reference design board created to demonstrate how a Wide Input Range (WIR) Offline flyback AC/DC SMPS can be used to operate and power embedded systems and industrial equipment. The board utilizes an STM32F103 Microcontroller and enables board users to develop the entire power circuit and application in a single, easy-to-use and debug environment. The board also features high efficiency characteristics and is able to operate down to very low input voltages. The DC2569A has been designed for switching frequencies up to 280 kHz and delivers output power up to 15 W.

The working principle of the DC2569A starts with the power transformer. The power transformer is the main component of any AC/DC SMPS and is responsible for transforming a mains AC voltage, usually 120V(ac), into a rectified DC voltage suitable for powering a DC-DC or AC-DC SMPS converter. The transformer typically consists of two windings, one primary and one secondary. The primary winding is connected to the mains voltage and it is responsible for providing a pulsating DC signal to the SMPS converter. The secondary winding of the transformer is connected to the input of the SMPS converter and it is responsible for providing the voltage necessary for powering the converter and for converting the input voltage to an appropriate output voltage.

The core component in any DC/DC or AC/DC converter is the switching device. In the case of the DC2569A, it is a N-Channel MOSFET. This MOSFET is responsible for switching the current (on/off) between the two windings of the transformer as well as for regulating the voltage at the output of the converter. The MOSFET is essentially a voltage controlled switch, and it is activated by a signal from the microcontroller. The signal from the microcontroller controls the duty cycle of the MOSFET, and thus controls the amount of power that is drawn from the mains AC voltage. The more the MOSFET is turned on, the higher the output voltage, and hence the more power is drawn from the mains.

The output of the DC/DC or AC/DC SMPS converter is then connected to the load or device that needs to be powered. Depending on the application, the load may require a constant voltage, or a variable output voltage that needs to be adjusted in order to operate properly. In the case of the DC2569A, the load can be as simple as a DC/DC or AC/DC SMPS isolated power source, or it can be as complex as an embedded system with multiple peripheral devices and integrated circuitry.

Once the DC/DC or AC/DC SMPS is connected to the load, it needs to be set up to operate correctly. This is done with the help of the built-in microcontroller which is responsible for controlling the voltage across the switching device and sending the appropriate on/off signals to the MOSFET. Additionally, the microcontroller is also responsible for monitoring the voltage across the switching device, and this can be used to detect any changes in the input voltage to the converter. With this information, the microcontroller can then adjust the output voltage of the converter accordingly.

The DC2569A reference design board is a great tool to help engineers design and implement efficient and reliable DC/DC and AC/DC off-line SMPS. By implementing the board, engineers can be sure that they are designing a power source that will meet their needs, and will be able to efficiently and reliably power any device or machine that requires it.

The specific data is subject to PDF, and the above content is for reference