EVAL5987A

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The EVAL5987A Evaluation Board supports research and development, including design verification and prototyping development of DC/DC & AC/DC (off-line) SMPS with high performance and low-cost Synchronous Rectifier Controller (SRC). Based on popular and advanced power components, the EVAL5987A combines low-shrink block with high integration of embedded components into a single board, which is ideal for industrial and scientific applications. This article will discuss its application fields and working principles.

Application Field

The EVAL5987A Evaluation Board can be used for designing and verifying SMPS circuits which can operate in different output voltages and current levels over wide input voltage range of up to 400 V. A variety of DC/DC topologies can be achieved depending upon user-selected components.

The EVAL5987A Evaluation Board is ideal for industrial and scientific applications which require high precision, dynamic response, high reliability, efficiency and low power consumption. Typical applications include energy-saving scientific instruments, automated testing systems, medical equipments and every application requiring power sourcing such as communications, industrial automation and consumer electronics.

Working Principles

The EVAL5987A Evaluation Board is based on SRC which allows building high performance and highly integrated power systems with low-shrink block and high embedment of components. SRC ensures smooth, efficient and digital-control control of the rectifier stage of DC/DC & AC/DC (off-line) SMPS. It ensures high efficiency, low switching losses, low system cost and low electromagnetic interference (EMI).

The SRC core consist of four circulating switches which redirects current flow to the input side of a converter. The level of ripple on the output is significantly reduced due to the presence of the SRC core. During operation, the SRC switches between two levels of input voltage, allowing for improved efficiency as compared to more traditional buck-boost methods.

The EVAL5987A Evaluation Boardis populated with a variety of user-selectable components such as opto-couplers, power transistors, ICs, resistors, capacitors, and a low-shrink block. It also contains various indicators to allow a user to optimize switching points for different input voltage ranges as well as determining the active SRC delay time.

The EVAL5987A Evaluation Board also supports advanced features such as synchronizing bar control, dynamic voltage scaling, automatic reset, adjustable dead-time, fault detection and reporting, and peak current control. These extra features add to the overall performance of the system and make it suitable for industrial and scientific applications.

Conclusion

The EVAL5987A Evaluation Board offers users with the ability to develop powerful and low-cost DC/DC & AC/DC (off-line) SMPS with high integration of components and low-shrink block. The SRC core utilized in the EVAL5987A Evaluation Board helps to reduce switching losses, allowing for improved efficiency and lower system costs. It is suitable for a variety of industrial and scientific applications as it supports advanced features such as synchronizing bar control, dynamic voltage scaling, automatic reset, adjustable dead-time, fault detection and reporting, and peak current control.

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