IRDC3821A

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

The IRDC3821A is an evaluation board from International Rectifier Corporation. It is designed to help engineers evaluate the performance and features of the synchronous buck-converter product IR3543A from the same company. It is categorized under Evaluation Boards - DC/DC & AC/DC (Off-Line) SMPS.

The IRDC3821A evaluation board is a four-phase synchronous buck-converter featuring current mode control, capable of delivering up to 35 A at up to 60 V output. The board supports up to 88 V input, and is designed to enable easy evaluation of various solutions for industrial, automotive, computing, telecommunications, and networking applications (involving switch mode power supplies). Furthermore, the board incorporated a variety of protection features and thermal characteristics.

The switching frequency can be adjusted between 200 kHz and 2 MHz and voltage mode/current mode operation can be selected via a jumper. The output voltage can be trimmed via an onboard potentiometer, while the frequency, current sense, peak current, voltage loop sensing, and additional settings can be adjusted using the integrated DIP switches. Protection functions, including over-voltage, under-voltage, over-temperature, and over-current, are also provided.

At the heart of the board is the IR3543A. This device is a dual 4-phase buck controller designed to drive up to 8 phases in total. It features an innovative architecture with complete current regulation, reducing the ripple and noise at the output significantly. This simplifies the design of complex power systems, enabling higher output current, faster transient response, smaller inductors/capacitors, and more flexibility in system design.

The board also provides additional features to support various applications. For instance, there is a fault indicator LED, which provides visual indication of those functions enabled through the jumpers and DIP switches. In addition, the board provides test points and wiring diagrams for easy access to various signals.

In terms of working principle, the IRDC3821A works by controlling current flow through all phases of the synchronous buck converter. This is done via a driver circuit that is designed to switch the connected MOSFETs on and off. During the ‘on’ period, the current flowing through the MOSFETs is modulated in response to the output voltage feedback. This ensures that the output voltage stays at the desired level, and enables efficient and effective regulation of the output current.

To sum up, the IRDC3821A evaluation board from International Rectifier Corporation is designed to offer a comprehensive platform for the evaluation of the IR3543A synchronous buck-converter. It is capable of delivering up to 35 A and up to 60 V output, while offering impressive protection features, versatility, ease of use, and a variety of adjustable settings. The board is ideal for industrial, automotive, computing, telecommunications, and networking applications.

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