ISL6366CRZ-T

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Special purpose voltage regulators are commonly used in today\'s electronic designs, and one type of regulator, the ISL6366CRZ-T, offers a reliable, easy-to-use solution for a variety of applications. This article examines the application field, working principle and other features of this device.

Application Field

The ISL6366CRZ-T from Intersil is a configurable and efficient three phase DC-DC step down voltage regulator. It is ideal for Verado industrial and automotive 3U servers and applications with high power efficiency requirements. It can also be used for VDD supply sequencing applications in critical systems, such as high end automotive ECUs, DSPs, MCUs, and ASICs.

The 3.3V or 5V ISL6366CRZ-T utilizes a PMBus interface and supports sequenced 3.3V or 5V adjustment mode. It is capable of adjusting the output voltage down to 0V, allowing for greater flexibility in the design. Additionally, the device offers reduced complexity with automatic paralleling, supports DFN and LGA packages, has a low output droop and is ideal for four-phase and three-phase systems.

Working Principle

The ISL6366CRZ-T provides precise voltage regulation for three-phase, four-phase and five-phase systems. This is achieved through the use of a synchronous rectifying buck topology that results in high efficiency and accurate voltage regulation, even at light load conditions.

This device also offers low-voltage operation, which allows it to be used in systems where the input voltage is lower than normal. Additionally, the device utilizes Cycle-by-Cycle Current Limit (CBCL) to maintain a safe level of current to the load, and Thermal Shutdown (TSD) to protect itself from thermal overstress.

Other Features

The ISL6366CRZ-T utilizes an external Clock Source (ECS) to provide an adjustable operating frequency up to 1.2MHz. Additionally, it has a Ready/Busy open drain output which indicates whether the output voltage is in the programmed range or not. Other features include thermal foldback protection, average current mode control, differential remote sense, zero voltage switching and power good output.

The output voltage of the ISL6366CRZ-T can also be adjusted through the PMBus interface. This is done by setting the output voltage limit and slew rate registers, as well as providing step load applications. The device is also small and requires little board space.

Conclusion

The ISL6366CRZ-T provides reliable power in three-phase, four-phase and five-phase systems and offers a variety of features not available with traditional voltage regulators. It is ideal for applications requiring power efficiency and precise voltage regulation, and its adjustable operating frequency, synchronous rectifying buck topology, and PMBus interface provide users with added flexibility.

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