SI32266CQC20SL0EVB

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SI32266CQC20SL0EVB is a low-cost, high efficiency, two-channel synchronous buck buck Evaluation and Demonstration Board (EVB). It is powered by an integrated synchronous buck controller, the SI32266, for DC/DC conversion of 21.6V to 28V input. The output voltage range can be programmable from 0.6V to 6V. The package of the SI32260 allows a full 6A, 12A continuous and 18A peak output power per channel, and possesses low RDSon Integrated Power MOSFETs to minimize conduction losses. The board design is optimized for a best-in-class system performance, and provides superior thermal performance even in high load current applications.

The board is suitable for various end-equipment markets like automotive, medical, home appliances and lighting. It is a compact and easy to use evaluation and demonstration platform empowering system designers to accurately assess the performance of the device. It allows for quick evaluation and development of application specific power supplies, reduces design time and the number of components required for design, and also alleviates the need to develop complex PCBs.

Working Principle

SI32266CQC20SL0EVB can be used as either an isolated synchronous buck or non-isolated synchronous buck. In either case, the output is regulated by the buck converter controller and synchronous rectifier (SG) switching appropriately. This is done by the control circuitry managing the duty cycle of the output voltage of the synchronous rectifier (SG). The buck controller and its integrated components provide a robust, stable and accurate output when compared to discrete solutions.

In the isolated synchronous buck mode, the buck controller functions as a buck controller and SG works as an isolated synchronous diode rectifier. In non-isolated synchronous buck mode, only the buck controller is active. In this mode, the SG is connected to the output of buck controller, which provides an additional voltage conversion path to double the current capacity since it can also work as a synchronous diode rectifier.

Application Field

The SI32266CQC20SL0EVB is suitable for high-performance point of load DC-DC power conversion for a variety of end-equipment markets. Such as automotive, medical, home appliances and lighting. It has low RDSon Integrated Power MOSFETs to minimize conduction losses. It provides superior thermal performances even in high load current applications.

The programmable output voltage of 0.6V to 6V, and the continuous and peak output of 6A, 12A, and 18A make it a suitable candidate for various high-performance applications. The operating frequency of the SI32266CQC20SL0EVB is adjustable up to 4.5MHz. It provides a wide range of output voltage and current for all applications.

The SI32266CQC20SL0EVB also has features, such as internal soft start and adjustable over-current protection, that enable it to meet stringent requirements in a wide range of end equipment. The output noise is lower than 5mV, which makes it a good choice for applications requiring noise-sensitive applications, such as medical equipment.

In addition, the SI32266CQC20SL0EVB has a wide variety of protection features to increase system reliability. Protection features include over-voltage, under-voltage, and over-temperature protection as well as output short-circuit, output over-current and over-load protection. All these features help to ensure that the system is safe and reliable for both the user and the system.

Conclusion

SI32266CQC20SL0EVB is an excellent evaluation and demonstration board. Suitable for high efficiency, two-channel synchronous buck applications. It is an excellent choice for a wide variety of end-equipment markets, including automotive, medical, home appliances, lighting and more. It offers low RDSon Integrated Power MOSFETs to minimize conduction losses and high peak and continuous output and excellent stability. It also provides a wide variety of protection features designed to increase system reliability.

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