ISL6520BCR

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ISL6520BCR Application Field and Working Principle

ISL6520BCR is a wide-range, high-efficiency DC-DC switching controller from Intersil Corporation. It is specialized to be used in notebook power management systems and is classified as one of the current and feature-rich PMIC - Voltage Regulators - DC DC Switching Controllers.

Its features include a low quiescent current, galvanic isolation, improved line and load regulation, wide output voltage range (2.5V - 10V), advanced current sharing and paralleling features, over-temperature protection, advanced low-power operation, fast switching frequency and dimming capabilities.

Application Field

The ISL6520BCR is used in power management systems of notebook computers and other electronic products. It is designed to provide higher efficiency, greater DC-DC power margins and improved power management, allowing notebooks to extend system run times and enable faster response times.

It is also used in multiple buck-boost configurations, such as systems with dual, triple and quad voltage outputs. It is ideal for all-in-one PCs that require high output voltage levels as well as higher efficiency on a single rail.

Working Principle

The ISL6520BCR uses a fixed frequency buck-boost topology, in which the integrated MOSFET switches are used to convert a fixed input voltage into the desired output voltage. It helps in maintaining constant voltage across the load and is capable of handling both step-up and step-down operations.

The controller supports fast transient response, allowing for a very fast response time for load changes. It has a fast switching frequency and a minimum on-time control that ensures very low ripple and allows for high efficiency. In addition, it has an internal compensation network that provides excellent transient response over a wide range of output voltages.

The ISL6520BCR also includes a wide array of features that enable easy and miniaturized system designs. These features include auto-restart low current capability, auto-restart and frequency overload protection, as well as external voltage feedback circuitry. Overall, the controller provides excellent performance and superior power management capabilities.

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